Burner for combustion of fuel (versions), procedure for combusting fuel with oxidant (versions) and procedure for glass melting

FIELD: power engineering.

SUBSTANCE: burner for fuel combustion comprises fuel supply line. The fuel supply line consists of several fuel sections. Also each fuel section is connected to another section and is designed for supply of fuel flow. Further, the burner includes a fuel inlet section. This section has the first fuel inlet and the first fuel outlet located at a distance from the first fuel inlet. The fuel inlet section has the first through cross section area and is designed to supply fuel flowing into the first fuel inlet and coming out the first fuel outlet. The burner has an intermediate section of fuel with fuel inlet and outlet device, notably the fuel outlet device is located at a distance from the fuel inlet device. The intermediate fuel section is designed for supply of at least part of flow coming into the inlet fuel device and going out of the outlet fuel device and has the second through cross section area. The second through cross section area changes from the initial through cross section area in the fuel inlet device to different through cross section area in the fuel outlet device. The burner has the fuel outlet section. The fuel outlet section has the second inlet of fuel and the second outlet of fuel located at a distance form the second inlet of fuel. The fuel outlet section is designed for supply of at least part of fuel flow coming onto the second fuel inlet and going out the second fuel outlet and it has the third through cross section area. This third through cross section area in essence is uniform along the whole outlet section of fuel. The burner comprises the first line of oxidant with several oxidant sections. Each oxidant section is connected to another oxidant section. It is designed to supply flow of oxidant. It includes an oxidant pressure chamber letting though oxidant flow and having the fourth through cross section area. At least part of oxidant pressure chamber is located in essence at least next to a part of at least one inlet section of fuel, intermediate section of fuel and outlet section of fuel. The oxidant outlet section lets through at least part of oxidant flow and has the fifth through cross section area. Also the fifth through cross section area is less or equal to the fourth through cross section area and in essence is uniform along the whole outlet section of oxidant. At least part of oxidant outlet section in essence is positioned next to the fuel outlet section.

EFFECT: facilitating upgraded quality of fuel combustion and reduced level of nitrogen oxide exhaust into atmosphere.

28 cl, 19 dwg

 

The present invention relates to fuel burners and methods of combustion of gaseous fuels with oxidants such as oxygen or air enriched with oxygen, and, in particular, such burners and methods to achieve high temperatures in industrial melting furnaces for glass, ceramic materials, metals, etc.

Although the invention is discussed in the context of oxidative/gas burners and combustion for melting glass, the invention is not limited to use for melting glass or industrial furnaces. Professionals need to understand that burner and method of the present invention can be used for many other combustion processes associated with heat.

In U.S. patent No. 5360171 (Yap) describes a burner for burning fuel in the environment of the oxidizer with the fuel injector between the upper and lower oxidant nozzle, which is available separately and are different from each other. The burner forms a jet of fuel and oxidant, which diverges when you go outside, taking the form of a fan and thus creating a wide torch. The jet of oxidizer have a smaller velocity than the jet fuel, allowing the oxidizing agent is drawn into the fuel. The upper and lower jets of oxidant can be used for staged combustion.

In PA inte U.S. No. 5545031 (Joshi and others) describes a method and device for feeding fuel and oxidant from the nozzle so what is forked torch or torch in the form of a fan. In accordance with a preferred embodiment of the collector of fuel disposed within the manifold oxidant. As a collector of fuel and oxidant manifold preferably have a rectangular cross-section in the plane of the exit. One of the preferred embodiments of both of the collector, as a rule, are of square cross-section at the entrance, usually with narrowing in the vertical direction and extending generally in a horizontal direction so that the plane came out of a rectangular cross-section. The combined effect of narrowing and expansion creates a net instantaneous transition environment, usually from the vertical plane, generally in a horizontal plane so that the fuel and oxidizer come from a nozzle on a wide cross-section that creates a forked or fan-shaped flame.

In U.S. patent No. 5611682 (Slavejkov and others) describes the stepwise oxidation of the fuel burner to obtain a generally flat enriched fuel torch, overlapping torch with high radiation from the depleted fuel content. The fuel passes through the fuel channel, which ends in the nozzle; in the case of the fuel channel has a space between the housing is ω and the fuel channel, formed for the passage of the oxidant. When the flow of fuel in the fuel channel and the flow of oxidant in the oxidant channel at the end of the nozzle of the fuel line, as a rule, is formed flat torch enriched fuel. Manual injector also provides for diversion of a portion of the oxidant under the torch enriched fuel, which is drawn from the bottom of the torch enriched fuel to create a flame of high radiation from depleted fuel content.

In U.S. patent No. 5575637 (Slavejkov and others) describes the oxidation of the fuel burner, such as that described in U.S. patent No. 5611682 (Slavejkov and others), except that the burner does not include the channel for manual feed of oxidant, and it is not used speed supply system.

In U.S. patent No. 4690635 (Coppin) describes the high-temperature burner Assembly having a nozzle body, designed for oxygen with the gas pipeline buried inside her. Part of the internal pipeline includes inserting a tip having a flat outer surface in the shape of a truncated cone protruding from the surface of the tip. Insert the tip of the pipeline has a centrally located gas channel, reaching the edge of the ledge, and has a surface in the shape of a truncated cone forming the shape of the PBO is Noah prism. The hole for the oxygen has a concentric position relative to the truncated speaker cone to supply oxygen for mixing with the gaseous fuel for combustion within the refractory burner block.

Despite advances in the development of the burners of the previous prior art, there remains a large number of unsolved problems, which at least include the following:

- consumption supplied for the reaction, is carried out unevenly, making uneven properties of the obtained torch;

- high level of turbulence in the flow of the reaction leads to higher than necessary, the speed of mixing and combustion;

- accumulation and accumulation of solid carbon on the nozzle of the fuel injector leads to distortion of the torch.

These problems associated with indicators, often cause problems such as:

- Increase, decrease temperature of the flame, which leads to improper distribution of heat transfer and temperature in the combustion process in the furnace. Such processes typically result in reduced service life of the refractory masonry of the furnace and reduce the output.

Limit the percentage of oxidizer, which can be destroyed (to cause) the composition of the mixture of the primary fuel/oxidizer. This limitation applies to burners to the e serves part of the fuel and the oxidizer in the refractory burner block (which, as a rule, is called the camera pre-combustion) for the Department of the burner Assembly from the process chamber. The main consequences of such restrictions associated with a reduction in radiation heat transfer, reduced combustion efficiency and increase emissions of oxides of nitrogen.

Premature reduction of the high temperature in the burner components.

- Limited range of the speed of combustion of the burner (consumption of fuel).

The present invention is the creation of a burner and method of burning, which would allow to overcome the difficulties, problems, limitations, shortcomings and defects inherent in the prior art, providing the best results and benefits.

It is also desirable to create a more efficient burner and method of burning fuel with the oxidizer.

It is also desirable to reduce inappropriate flow rate of fuel and oxidant at the point of initial mixing.

It is also desirable to minimize the deposition of carbon on the fuel injectors.

It is also desirable to provide a continuous flow of high uniform velocity and low turbulence level.

It is also desirable to minimize the average difference in velocity between the fuel flow and oxidant stream at the point of initial mixing.

It is also desirable to reduce the unevenness R is opredeleniya flow to conduct the reaction at a stove burner, as well as to reduce the pressure and turbulence of the gas at the inlet of the burner.

It is also desirable to improve the performance of the furnace through the burner control with higher inertia and more aliasing, which will lead to the creation of longer, more sustained and enriched fuel torch with a lower level of emissions of nitrogen oxides (NOx).

It is also desirable to improve the performance of the furnace with a longer, more sustainable torch, with greater overall rate of heat transfer the load in the furnace.

It is also desirable to further improve the parameters of the glass melting furnace by increasing the rate of heat transfer from the flame to the glass, thus increasing bottom temperature of the glass, increasing the recycling of glass from the clarification zone to zone melting and reducing defects in the glass (increasing production).

It is also desirable to expand the range of operating parameters of the gas burners.

This object is achieved due to the fact that the burner for combustion contains several elements. The first element is the supply line of the fuel that has multiple fuel cells, each fuel section are connected with each other by the fuel section and designed to flow fuel. The second element is a line feed oxidant that has multiple sections oxidant; each section of the oxidizing agent is connected to every other section is her oxidant and is designed for flow of oxidant.

More specifically, this object is achieved due to the fact that the burner for combustion contains

line fuel consisting of several fuel cells, each fuel section connected to another section and is designed to supply the flow of the fuel, including

the input section of the fuel, which has a first input fuel and the first output of the fuel that is located at a distance from the first input fuel and the input section of the fuel is first checkpoint square cross-section and configured to supply the flow of the fuel flowing into the first input of fuel, and the output from the first output fuel

the intermediate section of the fuel that has an input device of the fuel and the output device of the fuel located at a distance from the input device of the fuel with the intermediate section of the fuel is designed to supply at least part of the flow of the fuel flowing in the input device of the fuel, and the output from the output device of the fuel, and a second pass cross-sectional area; and a second internal cross-sectional area changes from the initial entrance cross-sectional area in the input device of the fuel to different entrance cross-sectional area of the output device fuel, and

the output section topl the VA, having a second input fuel and the second output of the fuel that is located at a distance from the second fuel intake; however, the output section of the fuel is designed to supply at least part of the flow of the fuel flowing into the second inlet of the fuel, and the output from the second output of the fuel; and with the third checkpoint, the cross-sectional area; and a third internal cross-sectional area,

the substance is uniform across the output section of the fuel; and

the first line of the oxidant, with a few sections of the oxidizer; however, each section of the oxidizing agent is connected to every other section of the oxidizer and is designed for flow of oxidant, including

the pressure chamber of the oxidizer, made with the possibility of passing a flow of oxidizer and having a fourth checkpoint the cross-sectional area; thus, at least part of the pressure chamber of the oxidizer is placed essentially at least near a part of at least one of the input section of the fuel, the intermediate section of the fuel and the output section of the fuel, and

the output section of the oxidizer, is arranged to pass at least part of the flow of oxidant, and having a fifth checkpoint the cross-sectional area; a fifth passage cross-sectional area is smaller or equal to the fourth prohod the second cross-sectional area, and, in fact, is uniform across the output section of the oxidizer; at least, the plot output section oxidant is, essentially, at least, near the plot of the output section of fuel.

Preferably, the burner further comprises a second line oxidant, located next to the first line of the oxidant; the second line oxidant made with the possibility of passing another stream of the oxidant or the thread of another oxidizing agent.

More preferably, the burner further comprises an input line of an oxidant in the form of the letter Y with the communication flow from the pressure chamber of the oxidizer, which is designed for a flow of oxidant to the pressure chamber of the oxidizer.

Even more preferably, the burner further comprises at least a control valve located in the intermediate section of the fuel, where the initial passage cross-sectional area at the inlet of the fuel in the intermediate section of the fuel is smaller than the passage cross-sectional area at the exit of the fuel from the intermediate section of fuel.

Additionally, the ratio of the fifth pass cross-sectional area of the output section of the oxidizer to the third pass-through cross-sectional area of the output section of the fuel may be less than the molar ratio of oxidizer to fuel both imoe for stoichiometric combustion.

Additionally, another stream of the oxidant or the flow of another oxidant exiting the second line of the oxidant, can be placed under the flame formed by combustion of at least part of the stream of fuel coming out of the second output fuel output section of the fuel, and at least part of the flow of the oxidant exiting the output section of the oxidizer.

Another aspect of the invention is a burner for burning fuel that contains:

the supply line of the fuel that has multiple fuel cells, each fuel section are connected with each other by the fuel cell and is used to transfer fuel flow, including

the input section of the fuel, which has a first input fuel and the first output of the fuel that is located at a distance from the first input fuel and the input section of the fuel is the entrance to the cross-sectional area intended for the flow of the fuel flowing to the first input of fuel, and the output from the first output fuel

the intermediate section of the fuel that has an input device of the fuel and the output device of the fuel located at a distance from the input device of the fuel with the intermediate section of the fuel is designed to supply at least part of the flow of the fuel flowing in the input device of the fuel, and the output from the output device the fuel, and having the second pass cross-sectional area; and a second internal cross-sectional area changes from the initial entrance cross-sectional area in the input device of the fuel to different entrance cross-sectional area of the output device fuel, and

the output section of fuel, having a second input fuel and the second output of the fuel that is located at a distance from the second fuel intake; however, the output section of the fuel is designed to supply at least part of the flow of the fuel flowing into the second inlet of the fuel, and the output from the second output of the fuel; and with the third checkpoint, the cross-sectional area; and a third internal cross-sectional area, in essence, is uniform across the output section of the fuel; and

the first line of the oxidant, with a few sections of the oxidizer; however, each section of the oxidizing agent is connected to every other section of the oxidizer and is designed for flow of oxidant, including

the pressure chamber of the oxidizer, made with the possibility of passing a flow of oxidizer and having a fourth checkpoint the cross-sectional area; and at least part of the pressure chamber of the oxidizer is placed essentially at least near a part of the at least one input section of fuel, intermediate the first section of the fuel and the output section fuel and

the output section of the oxidizer, while the output section of the oxidizer configured to pass at least part of the flow of oxidant and has the fifth checkpoint the cross-sectional area; a fifth passage cross-sectional area is less than or equal to the fourth pass-through cross-sectional area, and, in fact, is uniform across the output section of the oxidizing agent; and at least a section the output section of the oxidizer is essentially, at least, near the plot of the output section of the fuel; and

the second line of the oxidant, located next to the first line of the oxidant; the second line oxidant made with the possibility of passing another stream of the oxidant or the thread of another oxidant,

in which another stream of the oxidant or the flow of another oxidant exiting the second line of the oxidizer placed under the flame formed by combustion of at least part of the stream of fuel coming out of the second output fuel output section of the fuel, and at least part of the flow of the oxidant exiting the output section of the oxidizing agent, and also containing at least one rail damper, located in the intermediate section of the fuel, where the initial passage cross-sectional area at the inlet of the fuel in the intermediate section that is Liwa is less than different passage cross-sectional area at the exit of the fuel from the intermediate section of fuel.

Another aspect of the invention is a burner for burning fuel having a longitudinal axis and containing a handpiece having

the first elongated edge near the point of fuel supply, and

the second elongated edge near the point of feed of oxidant, forming a fixed angle (α)of approximately less than 15° from a line parallel to the longitudinal axis, the intersection of the input surface that is parallel to the longitudinal axis, and

the first elongated edge and a second elongated edge form a second angle (β)that is greater than the angle of inclination (α), and less than approximately 90° from the tangent line to continue the line extending from the first elongated edge, in the direction of fuel flow.

Preferably, the second elongated edge includes an initial smooth tapered transition, forming the main angle (α), and a curved section ending at the first elongated edge.

Another aspect of the invention is a method of burning fuel with an oxidant, comprising the steps are used:

the source of fuel;

source, at least one oxidizer;

burner containing

the fuel line with the number of sections; each fuel section connected to another section and is designed to supply the flow of the fuel, including

the input section of the fuel, which has a first input fuel and the first output of the fuel that is located at a distance from the first input fuel and the input section of the input fuel is the entrance to the cross-sectional area intended for the flow of the fuel flowing to the first input of fuel, and the output from the first output fuel

the intermediate section of the fuel that has an input device of the fuel and the output device of the fuel located at a distance from the input device of the fuel with the intermediate section of the fuel is designed to supply at least part of the flow of the fuel flowing in the input device of the fuel, and the output from the output device of the fuel, and a second pass cross-sectional area; and a second internal cross-sectional area changes from the initial entrance cross-sectional area in the input device of the fuel to different entrance cross-sectional area of the output device fuel, and

the output section of fuel, having a second input fuel and the second output of the fuel that is located at a distance from the second fuel intake; however, the output section of the fuel is designed to supply at least part of the flow of fuel, coming to the second input of fuel, and the output from the second output of the fuel; and with the third checkpoint, the cross-sectional area; and a third internal cross-sectional area, in essence, is uniform across the output section of the fuel; and

the first line of the oxidant with many sections of the oxidizer; however, each section of the oxidizing agent is connected to every other section of the oxidizer and is designed for flow of oxidant, including

the pressure chamber of the oxidizer, made with the possibility of passing a flow of oxidizer and having a fourth checkpoint the cross-sectional area; thus, at least part of the pressure chamber of the oxidizer is placed essentially at least near a part of at least one of the input section of the fuel, the intermediate section of the fuel and the output section of the fuel, and

the output section of the oxidizer, is arranged to pass at least part of the flow of oxidant, and having a fifth checkpoint the cross-sectional area; a fifth passage cross-sectional area is less than or equal to the fourth pass-through cross-sectional area, and, in fact, is uniform across the output section of the oxidizing agent; and at least a section the output section of the oxidizer is essentially, at least, very near to the with a plot of the output section of the fuel;

serves the flow of fuel to the first input of fuel, where at least part of the fuel flow supplied from the first input of fuel in the second fuel yields;

serves the flow of oxidant to the pressure chamber of the oxidizer, where at least part of the flow of oxidizer is supplied from the pressure chamber of the oxidizer in the output section of the oxidizer; and

burn at least a portion of the fuel exiting the second outlet of the fuel, at least part of the oxidant exiting the output section of the oxidizer.

Preferably the method includes the following steps, which are:

place a second line of oxidant next to the first line of the oxidant, made with the possibility of passing another stream of the oxidant or stream other oxidant supplied to the second line oxidant,

serves another stream of the oxidant or the flow of another oxidant to the second line of the oxidizer; and

burn at least another portion of the fuel exiting the second outlet of the fuel, at least part of the another stream of the oxidant, or at least part of the oxidant exiting the second line of the oxidant.

More preferably the method includes the following steps, which are:

create input line oxidant in the form of the letter Y with the communication flow from the pressure chamber of the oxidizer, which is the feed flow of oxidant to the pressure chamber of the oxidizer; and

serves at least part of the oxidant in the input line of the oxidant in the form of the letter Y.

More preferably the method includes an additional step, in which at least a control valve located in the intermediate section of the fuel, where the initial passage cross-sectional area at the inlet of the fuel in the intermediate section of the fuel is smaller than the passage cross-sectional area at the exit of the fuel from the intermediate section of fuel.

Moreover, the ratio of the fifth pass cross-sectional area of the output section of the oxidizer to the third pass-through cross-sectional area of the output section of the fuel may be less than the molar ratio of oxidant to the fuel required for stoichiometric combustion.

Additionally, another stream of the oxidant or the flow of another oxidant exiting the second oxidant second line oxidant, can be placed under the flame formed by combustion of at least part of the stream of fuel coming out of the second output fuel output section of the fuel, and at least part of the flow of the oxidant exiting the output section of the oxidizer.

Another aspect of the invention is a method of burning fuel with the oxidant in several stages, using:

the source of fuel;

the source, at least one oxidizing agent; and

burner containing

the fuel line that has multiple sections, with each fuel section connected to another section and is designed to supply the flow of the fuel, including

the input section of the fuel, which has a first input fuel and the first output of the fuel that is located at a distance from the first input fuel and the input section of the fuel is the entrance to the cross-sectional area intended for the flow of the fuel flowing to the first input of fuel, and the output from the first output fuel

the intermediate section of the fuel that has an input device of the fuel and the output device of the fuel located at a distance from the input device of the fuel with the intermediate section of the fuel is designed to supply at least part of the flow of the fuel flowing in the input device of the fuel, and the output from the output device of the fuel, and a second pass cross-sectional area; a second internal cross-sectional area changes from the initial entrance cross-sectional area in the input device of the fuel to different entrance cross-sectional area of the output device of the fuel, and the intermediate section of the fuel includes at least one guide flap, and

the output section is th fuel having a second input fuel and the second output of the fuel that is located at a distance from the second fuel intake; however, the output section of the fuel is designed to supply at least part of the flow of the fuel flowing into the second inlet of the fuel, and the output from the second output of the fuel; and with the third checkpoint, the cross-sectional area; and a third internal cross-sectional area, in essence, is uniform across the output section of the fuel; and

the first line of the oxidant with many sections of the oxidizer; however, each section of the oxidizing agent is connected to every other section of the oxidizer and is designed for flow of oxidant, including

the pressure chamber of the oxidizer, made with the possibility of passing a flow of oxidizer and having a fourth checkpoint the cross-sectional area; thus, at least part of the input pressure chamber of the oxidizer post, essentially, at least, next to part of at least one of the input section of the fuel, the intermediate section of the fuel and the output section of the fuel, and

the output section of the oxidizer, is arranged to pass at least part of the flow of oxidant, and having a fifth checkpoint the cross-sectional area; a fifth passage cross-sectional area is smaller or equal to the fourth aisle is Noah cross-sectional area, and, in fact, is uniform across the output section of the oxidizing agent; and at least a section the output section of the oxidizer is essentially, at least, near the plot of the output section of the fuel;

serves the flow of fuel to the first input of fuel, where at least part of the fuel flow supplied from the first input of fuel in the second fuel yields;

serves the flow of oxidant to the pressure chamber of the oxidizer, where at least part of the flow of oxidizer is supplied from the pressure chamber of the oxidizer in the output section of the oxidizer; and

burn at least a portion of the fuel exiting the second outlet of the fuel, at least part of the oxidant exiting the output section of the oxidizer;

create a second line of oxidant next to the first line of the oxidant; the second line oxidant made with the possibility of passing another stream of the oxidant or stream other oxidant supplied to the second line of the oxidizer;

serves another stream of the oxidant or the flow of another oxidant to the second line oxidant; however, at least part of the another stream of the oxidant, or at least part of another oxidant is supplied from the second line of the oxidizer; and

burn at least another portion of the fuel exiting the second outlet of the fuel, at least a part drugog the flow of oxidant, or at least part of the oxidant exiting the second line of the oxidant,

another stream of the oxidant or the flow of another oxidant exiting the second line of the oxidant, placed under the flame formed by combustion of at least part of the stream of fuel coming out of the second output fuel output section of the fuel, and at least part of the flow of the oxidant exiting the output section of the oxidizer.

Another aspect of the invention is a method of burning fuel with the oxidizer, which includes several stages, using:

the source of fuel;

the source of oxidant;

a burner for burning fuel with the oxidant to the burner longitudinal axis, containing the tip with

the first elongated edge near the point of fuel supply, and a second elongated edge near the point of feed of oxidant, forming a fixed angle (α)of approximately less than 15° from a line parallel to the longitudinal axis, the intersection of the input surface that is parallel to the longitudinal axis;

the first elongated edge and a second elongated edge form a second angle (β)that is greater than the angle of inclination (α), and less than approximately 90° from the tangent line to continue the line extending from the first elongated edge towards Rhodotorula; and

burn at least part of the fuel, at least part of the oxidant in the area, located near the tip of the burner.

Preferably, the second elongated edge includes an initial smooth tapered transition, forming the main angle (α), and a curved section ending at the first elongated edge.

Another aspect of the invention is a method of melting glass comprising the above-described method of burning fuel with the oxidizer.

Preferably the burner fifth passage cross-sectional area less than the fourth passage cross-sectional area.

More preferably, the burner includes an input manifold oxidant communication flow with the first line of an oxidant and a second line oxidant.

Even more preferably, the burner also includes a valve to regulate to regulate the flow rate of the oxidizer to the second line of the oxidizer.

Preferably also, the burner includes an input manifold oxidant communication flow with the first line of an oxidant and a second line oxidant and contains a valve to regulate to regulate the flow rate of the oxidizer to the second line of the oxidizer.

Even more preferably in the burner passage cross-sectional area of the output section ocil the body, essentially uniform and continuous cross-sectional area of the output section of the fuel is essentially uniform.

In addition, the passage cross-sectional area of the output device fuel intermediate section of fuel, essentially, can have a non-circular shape and internal cross-sectional area of the output section of the fuel essentially can have a non-circular shape.

Additionally, the burner also contains the oxidant diffuser placed in front of the pressure chamber of the oxidizer.

Preferably, the burner includes locating pins for the implementation of the attachment between the output section of the fuel and the output section of the oxidizer.

More preferably, the burner also includes locating pins for secure attachment between the output section of the fuel and the output section of the oxidizer.

Thus, the supply line of the fuel according to the first embodiment of the burner includes an input section of the fuel, the intermediate section of the fuel and the output section of fuel. The input section of the fuel has a first input fuel and the first output of the fuel that is located at a distance from the first entrance of the fuel; and the input section of the fuel has the first checkpoint the cross-sectional area calculated on the flow of the fuel flowing to the first input of fuel, and out the first outlet of the fuel. Premiato the Naya section of the fuel has an input device and fuel output fuel located at a distance from the input device fuel; while the intermediate section is designed to supply at least part of the flow of the fuel flowing in the input device of the fuel, and the output from the output device of the fuel, and has the second-pass cross-sectional area; and a second internal cross-sectional area different from the initial cross-sectional area in the intake device of the fuel by the amount of the difference with a passing cross-sectional area of the output device of the fuel. The output section of the fuel has a second input fuel and the second output of the fuel that is located at a distance from the second fuel intake; however, the output section of the fuel is designed to supply at least part of the flow of the fuel flowing in the second input fuel, and out the second outlet of the fuel, and has a third checkpoint the cross-sectional area; a third internal cross-sectional area, in essence, is uniform across the section of the release of fuel.

The first line of the oxidant according to the first embodiment of the burner includes an input section of the oxidizer and the output section of the oxidizer. The input section of the oxidizer has a first input device of the oxidant and the first output device oxidant, located at a distance from the first what about the inlet of the oxidizer; the input section of the oxidizer is designed for the flow of oxidant flowing into the first input device of the oxidant, and the output from the first output device of the oxidant, and has the fourth checkpoint the cross-sectional area; thus, at least part of the input section of the oxidizer is at least close to a part of the at least one output section of the fuel, the intermediate section of the fuel and the output section of fuel. The output section of the oxidizer has an input oxidant and exit of the oxidizer, located at a distance from the entrance of the oxidant, while the output section of the oxidizer is designed for the transmission of at least part of the flow of oxidant supplied to the input device oxidant and output an output device oxidant, and has the fifth checkpoint the cross-sectional area;

in this fifth passage cross-sectional area is less than or equal to the fourth pass-through cross-sectional area, and, in fact, is uniform across the output section of the oxidizing agent; and at least a section the output section of the oxidizing agent is generally at least near the area of the output section of fuel.

There are many variations of the first embodiment of the burner. One option against the fifth pass of the cross-the cross of the FL output section of the oxidizer to the third pass-through cross-sectional area of the output section of the fuel is less than the molar ratio of oxidizer to fuel, required for stoichiometric combustion.

The second embodiment of the burner is similar to the first embodiment, but includes an input line of an oxidant in the form of the letter Y with the communication flow to the input section of the oxidizer, which is designed for a flow of oxidant to the first input device oxidizer input section of the oxidizer.

The third embodiment of the burner is similar to the first embodiment, but includes at least a control valve located in the intermediate section of the fuel, where the initial passage cross-sectional area at the inlet of the fuel in the intermediate section of the fuel is smaller than the passage cross-sectional area at the exit of the fuel from the intermediate section of fuel.

The fourth embodiment of the burner is similar to the first embodiment, but includes a second line oxidant, located next to the first line of the oxidant; the second line of the oxidant has a second input device of the oxidant and the second output device oxidant, located at a distance from the second input device oxidant; however, the second line of the oxidizer is designed for the transmission of the another stream of the oxidant or stream other oxidant supplied to the second input device of the oxidant, and the output from the second output device is TBA oxidant. Alternatively, this embodiment of the another stream of the oxidant or the flow of another oxidant exiting the second output device oxidizer second line of oxidant provided under the flame formed by combustion of at least part of the stream of fuel coming out of the second output of the output section of the fuel, and at least part of the flow of the oxidant exiting the output device oxidizer output section of the oxidizer.

According to the fifth embodiment of the burner for burning fuel burner has a longitudinal axis and includes a nozzle head having a first elongated edge near the point of fuel supply, and a second elongated edge near the point of feed of oxidant, forming a fixed angle (α)of approximately less than 15° from a line parallel to the longitudinal axis, the intersection of the input surface that is parallel to the longitudinal axis. In this embodiment, the first elongated edge and a second elongated edge form a second angle (β)that is greater than the angle of inclination (α), and less than approximately 90° from the tangent line to continue the line extending from the first elongated edge in the direction of the fuel. According to the variant of this embodiment, the second elongated edge includes an initial smooth tapered transition, forming the main Hugo the tilt (α), and a curved section ending at the first elongated edge.

Another aspect of the invention relates to a furnace for melting glass, the furnace has at least one burner of this type, as specified in accordance with one of the embodiments, or the above options.

The first embodiment of the method of burning the fuel with the oxidizer consists of several stages. The first stage includes the supply of fuel source. The second stage involves a source, at least one oxidizing agent. The third stage involves the burner type burner specified in the first embodiment. The fourth step consists in the flow of fuel to the first fuel intake, where at least part of the fuel flow supplied from the first input of fuel in the second fuel yields. The fifth step consists in the flow of oxidizer into the first inlet of the oxidizer, where at least part of the flow of oxidizer is supplied from the first input of the oxidant in the output device of the oxidant. The fourth step consists in burning at least part of the fuel exiting the second outlet of the fuel, at least part of the oxidant exiting the output device oxidizer.

There are many variations of the first embodiment of the method of burning the fuel with the oxidizer. In the first embodiment the ratio of the fifth pass area on Aracinovo section the output section of the oxidizer to the third pass-through cross-sectional area of the output section of the fuel is less than the molar ratio of oxidant to the fuel required for stoichiometric combustion.

The second embodiment is similar to the first embodiment of the method, but includes two additional steps. The first additional step includes output line of the oxidant in the form of the letter Y on the environment with the input section of the oxidizer, which is designed for the flow of oxidant to the first input of the oxidizer input section of the oxidizer. The second additional step is to feed at least part of the oxidant in the input line of the oxidant in the form of the letter Y.

The third embodiment is similar to the first embodiment of the method, but includes another stage, in accordance with which the guide provides a valve located in the second intermediate section of the fuel, where the initial passage cross-sectional area from the input device fuel intermediate section of the fuel is smaller than the passage cross-sectional area of the output device fuel intermediate section of fuel.

The fourth embodiment is similar to the first embodiment of the method, but includes three additional stages. The first additional step provides a second line of oxidant, located next to the first line of the oxidant; the second line of the oxidant has the Torah entrance of the oxidant and the second output oxidant, located at a distance from the second inlet oxidant; the second line of the oxidizer is designed to supply another stream of the oxidant or stream other oxidant supplied to the second input of the oxidant and out the second outlet of the oxidizer. The second additional step is to file another stream of the oxidant or stream other oxidant second inlet oxidant; however, at least part of the another stream of the oxidant, or at least part of another oxidant is supplied from the second input of the oxidant to the second output of the oxidant. The third additional step is to burn at least another portion of the fuel exiting the second outlet of the fuel, at least part of the another stream of the oxidant, or at least part of the oxidant exiting the second oxidant. According to the variant of this embodiment, another stream of the oxidant or the flow of another oxidant exiting the second oxidant second line oxidant, is placed under the flame formed by combustion of at least part of the stream of fuel coming out of the second output fuel output section of the fuel, and at least part of the flow of the oxidant exiting the output device output section of the oxidizer.

Another embodiment of the method of burning the fuel with the oxidizer includes several what about the stages. The first stage includes the supply of fuel source. The second stage involves the supply source of oxidant. The third stage provides a burner for burning fuel with an oxidant, such as a burner provided in the fifth embodiment of the burner in accordance with the description above. The fourth stage involves the combustion of at least part of the fuel, at least part of the oxidant in the area, located near the tip of the burner. According to the variant of this embodiment of the method of the second elongated flange includes an initial smooth tapered transition variable cross-section, forming a first angle (α), and a curved section up to the first elongated edge.

Another aspect of the invention relates to a process of melting the glass, the process comprising the method of burning the fuel with the oxidizer as specified in any of the embodiments and variants described in the description above.

Other advantages and features of the invention set forth in the following description of various embodiments of the invention, given solely as non-limiting examples and are presented in the attached drawings, on which:

Figure 1 - schematic view of the side view one embodiment of the invention.

Figure 2 is a schematic side view of a burner tip according to one embodiment of izopet the deposits.

Figure 3 is a schematic front view of the burner tip according to one embodiment of the invention.

Figure 4 is a schematic rear view of the burner according to one embodiment of the invention illustrating the entrance of the oxidant in the form of Y.

Figure 5 is a schematic view in plan of part of the fuel injector according to one embodiment of the invention illustrating the use of the guide flaps in the intermediate section of the fuel injector.

Figure 6 is a schematic side view of part of the burner according to one embodiment of the invention illustrating a preferred form of the pressure chamber of the oxidizer.

Figure 7 is a schematic side view of another embodiment of the invention illustrating alternative forms of the pressure chamber of the oxidizer.

Figure 8 is a schematic cross-sectional view one embodiment of the burner according to the present invention used in connection with the refractory burner block.

Figure 9 is a graph comparing the relative radiation of the flame burner according to the present invention with radiation torch burner previous level of equipment with different wavelength.

Figure 10 is a diagram showing the mechanisms of radiation heat transfer from the flame formed in the glass-melting furnace, burner and method of the present invention.

Figure 11 is a graph showing the normal radiation plume, measured above and below the torch, education is the principal burner according to the method of the present invention.

Figure 12 is a diagram showing the construction of the nozzle head, square shape.

Figure 13 is a diagram showing the construction of the burner tip round shape.

Figure 14 is a diagram showing the construction of the burner tip with a single angle, single flow, prismatic form.

Figure 15 is a diagram showing the construction of the burner tip with a single angle, the associated consumption, prismatic form.

Figure 16 is a diagram showing one embodiment of a tip of an injector according to the present invention.

Figure 17 is a diagram showing the configuration flow for the reaction of one embodiment of a tip of an injector according to the present invention.

Figure 18 is a photo showing the deposition of carbon on the tip prior art design of the burner.

Figure 19 is a diagram showing the placement of a glass-melting furnace.

The invention relates to a burner and method of burning fuel with the oxidizer. Although the description of the invention given in the context of using oxy/gas torch to melt glass, its application is not limited to such burners and such appointment. Professionals need to understand that the burner and the method can be applied to many other heating processes, including at least kiln cement kiln to square the effect of ferrous/non-ferrous metals and steam generators.

When applying for melting glass oxygen/gas burner creates a high temperature, wide torch with extended dynamic range control and stepwise use (for example, a delay in the filing of) a high percentage of oxygen supplied under the torch to improve heat radiation, reducing NOxand increased control of the length of the torch and inertia compared with the parameters that had the burner to the present invention. Such increase of the parameters is provided in the create new design and layout of the components of the burner. In the glass-melting production burner, usually used in connection with the refractory burner block, located in the zone of combustion between the burner and the furnace.

In this context, the term "fuel" includes any gaseous fuel suitable for combustion. Although one preferred fuel is natural gas, it is also possible to apply various other fuel gases, such as hydrogen, ethane, propane, butane, acetylene and other fuel gases, and a combination thereof.

In the present context, the term "oxidant includes oxygen, oxygen-enriched air, or any other suitable oxidant with an oxygen concentration of approximately 21% by volume. One is m the preferred oxidant is pure industrial oxygen, produced by the cryogenic air separation or absorption process. The oxygen concentration in such oxidant, typically, is more than 90% of the volume. The combined use of pure industrial oxygen and natural gas, as a rule, takes place in high temperature furnaces, such as glass melting furnace.

The Figure 1 shows a side view of one embodiment of the burner 10 of the present invention. The fuel 12, such as natural gas, is fed to the input fuel input section 14 of the fuel 16. The fuel passes through the inlet section of the fuel, the intermediate section of the fuel 18, the output section of the fuel 20 and exits from the output device of the fuel 22. In the embodiment shown in Figure 1, the input section of the fuel is a pipe of circular cross section, a transition section fuel is a section of the transition from a round to a flat cross section and the output section of the fuel represents a portion of a flat cross-section. Preferably, all three sections were made in one piece and was a three-section welded unit fuel injector. The input section of the fuel has an area of inlet fuel and the area of production of fuel, which are located at a distance from the first entrance of the fuel; and the input section of the fuel has the first checkpoint the cross-sectional area, Rasch is designed for the transfer of fuel flow, falling into the first zone of the fuel inlet, and out the first outlet area of the fuel. The intermediate section of the fuel has a suction device and fuel outlet of the fuel located at a distance from the inlet of the fuel; the intermediate section is designed to supply at least part of the flow of fuel entering the intake device of the fuel, and emerging from the outlet of the fuel, and has the second-pass cross-sectional area; and a second internal cross-sectional area different from the initial cross-sectional area in the intake device of the fuel by the amount of the difference with a passing cross-sectional area in the exhaust device of the fuel. The output section of the fuel has a second inlet of the fuel and the second fuel discharge, located at a distance from the second inlet of the fuel; however, the output section of the fuel is designed to supply at least part of the flow of fuel entering the second inlet device fuel, and out the second outlet of the fuel, and has a third checkpoint the cross-sectional area; a third internal cross-sectional area, in essence, is uniform across the section of the release of fuel.

The burner further comprises a first supply line oxidant having a few what to sections oxidant, each section of the oxidizing agent is connected to every other section of the oxidizer and is designed for flow of oxidant. In accordance with Figure 1, the oxidizing agent 24, such as oxygen, is pumped into the inlet manifold of the oxidizing agent 26, such as an input device of an oxidant, made in the form of Y, is shown in Figure 4. Optionally, an oxidant is supplied to the pressure chamber of the oxidizer 28 and supplied to the output section of the oxidizer 30. The sheet 32, located between the pressure chamber of the oxidizer and the output section of the oxidizer has a hole 34 through which is the flow rate of the oxidizer, as shown in Figure 2. This embodiment is also shown in Figure 6. Professionals need to understand that there may be alternative embodiments, such as the alternative embodiment shown in Figure 7.

As shown in Figure 1, the locating pins 36 streamlined provide attachment between the output section of the fuel 20 and the output section of the oxidizer 30. Diffuser oxidant 33 can be installed before the pressure chamber of the oxidizer 28 to improve the distribution of the consumption of the oxidizing agent included in the pressure chamber of the oxidizer. Also in accordance with Figure 1 provides another line of oxidizer 40 (step pressure chamber oxygen), located next to the pressure chamber of the oxidizer 28, providing opencity function. The flow of oxidant from the discharge chamber of the oxidizer to the speed of the pressure chamber of the oxidizer or line oxidant can be adjusted using a valve to regulate the 42 or other control devices.

The Figure 2 shows the output section of the burner, formed by the output section of the fuel 20 and the output section of the oxidizer 30. The Figure 3 shows a front view of the output section of the burner according to one embodiment of the burner. However, experts in this field should understand that the output section of the burner may have a different shape than that shown in Figure 3.

The Figure 8 shows the cross-section of the burner 10 of the present invention, associated with refractory burner block 150. A high-temperature flame 151 is formed in the upper chamber 152 burner block. The oxidant 153, coming from the output section of the oxidizer burner 30 comprises a torch, while simultaneously supplied to the oxidizer inside the torch, providing convective cooling of the surface of the refractory material 154 in the area around the torch. Step oxidant 155 is fed through the lower chamber 156 burner block.

The improved results obtained by the present invention, relative to previous developments, due to the unique placement and design of the various components of the burner 10. the Scripture some of the most important aspects of the design and location below.

For example, as shown in Figures 1 and 2, the passage cross-sectional area of the output section of the oxidizer 30 must be less than or equal to the entrance cross-sectional area of the pressure chamber oxidizer 28, and must be essentially uniform across the output section of the oxidizer (streamlined locating pins 36 reduce the entrance to the cross-sectional area of the output section of the oxidizer by approximately 3%, but is designed in such a way as to prevent the formation of turbulent eddies, and do not impact significantly on the velocity distribution of the oxidant in the output device output section). Reducing the entrance cross-sectional area leads to a decrease of the static pressure of the flow of oxidant in the direction of flow, such as favorable pressure gradient allows to eliminate the problem of uneven speed.

Internal cross-sectional area of the intermediate section of the fuel 18 is changed from the initial entrance cross-sectional area in the input device fuel intermediate section of the fuel to the other entrance cross-sectional area of the output device fuel intermediate section of fuel. Internal cross-sectional area of the output section 20 in its entirety, essentially, is uniform. One GP is Osenniy passage cross-sectional area of the intermediate section of the fuel is greater than or equal to the entrance cross-sectional area of the output device intermediate section fuel because this creates a favorable pressure gradient with the advantages that were described above (using the same cross-sectional area at the inlet and outlet leads to the creation of neutral pressure gradient, which does not exert bad influence on the velocity distribution of the flow).

Another embodiment of the internal cross-sectional area at the inlet device of the intermediate section of the fuel 18 is smaller than the passage cross-sectional area of the output device intermediate section of fuel. This embodiment is conducive to the creation of the "junk" pressure gradient (the pressure increases in the direction of flow)that without intervention would increase the non-uniformity of velocity and would potentially lead to the formation of reverse flow and high turbulence level. To prevent such harmful effects according to this embodiment it is necessary to install one or more guides of the valve 50, as shown in Figure 5.

One embodiment of the internal cross-sectional area of the output device fuel intermediate section 18 fuel, essentially, has a non-circular shape, and internal cross-sectional area of the output section of the fuel 20 essentially has a non-circular shape. According to another embodiment of the section of the output Topley is and has the ratio of the width to the height (width: height) more than about 2:1 at the output of the fuel 22 and the intermediate section of the fuel is the ratio of the width to the height of more than approximately 2:1 in the output device of the fuel. In another embodiment the ratio of the entrance cross-sectional area of the output device, the output section of the oxidizer 30 to pass cross-sectional area at the outlet of the fuel output section of the fuel 20 is less than the molar ratio of oxidant to the fuel required for stoichiometric combustion (stoichiometric combustion is complete, the calculated combustion without excess oxidant. For combustion of methane with oxygen above the ratio of the area will be less than 2:1 in this embodiment).

This aspect of the invention sets the ratio of average velocity of flow in the output section of the fuel 20 and the output section of the oxidizer 30, which is 1.0 only when the flow of oxidant through the output section of the oxidizer has a value that is less than the stoichiometric value. Thus, the effect seeks to minimize the difference between the average velocity of flow of fuel and oxidant and therefore shear stress and the rate of mixing between the reacting flow in the case where the amount of oxidant flowing through the output section of the oxide is of Italia, is less than the stoichiometric amount of oxidant. The resulting advantage can provide a high percentage of stepwise feed of oxidant without the risk of damage from high temperature in the burner 10 or refractory burner block 150. Higher level gradation provides more long-term production, the best quality glow of the torch, creating greater energy efficiency and reducing emissions of NOx.

The improved results obtained through the implementation are given in the description of aspects of the invention were tested in the laboratory and in field tests by comparing the performance of the burner according to the present invention with a burner in the previous prior art, which are presented in U.S. patent No. 5611682 (Slavejkov and others). Some of the results of these tests and comparisons below.

Was carried out measurements of the velocity distribution at the exit of the fuel and oxidant two burners. Was quantified uneven speeds using a single parameter, which represents the standard deviation of the local velocity from the average velocity, in particular the cross-section of flow. The results of the measurements and subsequent calculations show that the variation in speed to burn and the present invention is on average one third of the value of non-uniformity for the burner according to prior art. The distribution of the flow rate in the jet obtained for the burner of the present invention, reflected in the improvement of process control mixing of oxygen with natural gas. In particular, under the improved uniformity refers to the reduction of the gradient of the shear rate and reducing the likelihood of local oxygen depletion. Therefore, there is a high possibility of stepwise feed and less risk of overheating in the chamber prior to combustion or burner block. In addition, the improved uniformity of reactive flow leads to improved uniform properties of the torch and, in particular, leads to a decrease of the peak temperature of the flame, causing overheating of the refractory masonry of the furnace and increasing emissions of NOx.

Comparison of requirements for static pressure at the fuel intake of the two burners, a significant reduction requirements, fuel pressure at the inlet compared to the burner of the previous prior art. In particular, the measurements showed a decrease in fuel pressure at the inlet to the burner of the present invention more than 80%. The pressure decrease, mainly due to the requirement that the internal cross-sectional area in the output section of the fuel 20, essentially, is everywhere uniform. Therefore, in the output section does not provide static is th mixing device (such as vents). In the normal execution of such static mixing device is used to improve the uniformity of speeds by creating a high pressure drop (which dissipates energy in the form of turbulent eddies) and favors mixing. When using the burner of the present invention eliminates the need for the use of static mixing devices, which thus leads to a smoothing of the velocity profile within the intermediate section 18 fuel with minimal pressure loss and low creating turbulence.

The measurements show that the fuel pressure at the inlet of the burner 10 of the present invention is cheapest to embodiments, which use the guide flap 50 is mounted in the intermediate section of the fuel 18 as guides dampers effectively convert some of the kinetic energy in the input device of the intermediate section into pressure energy in the output device of the intermediate section, which ensures the desired smoothing of the velocity.

For the burner 10 of the present invention also requires much less pressure of oxygen at the inlet than to the burner according to prior art for the two modes: 1) manual valve 42 is closed and 2) manual valve fully Otkrytaya is but for fuel pressure at the entrance of the main reason for this is that passage cross-sectional area in the output section of the oxidizer 30 is essentially uniform across the output section of the oxidizer and therefore has no zones violations of consumption, the effect of the occurrence of turbulence created by the static mixing devices. The smoothing of the velocity distribution of oxygen occurs between the pressurized oxygen chamber 28 and the input device to the output section of oxygen 30 by reducing the entrance cross-sectional area that occurs between these two sections.

Since most of the burner units is limited pressure on the supply of oxygen and/or fuel, the main advantage of a significant reduction requirements, fuel pressure and oxygen according to the present invention is the ability of the burner to operate with higher efficiency. In some cases a decrease in pressure can also lead to the reduction of power consumed by the installation of air separation, oxygen as oxidant. In addition, reducing turbulence in the burner of the present invention allows the burner to operate with greater productivity with less risk of overheating of the burner or the devastating effects of temperature on the furnace due to the excessive short-term turbulence of the torch.

The wire which were also measurements of spectral radiation of the torches, two burner when burning outdoors. Comparison of spectra of radiation of the flame speed burning 15 MMBTU/h with graded levels of feed of oxidant, established at their respective settlement level, shown in Figure 9. Speed maximum current level for these burners is determined by the ability of the oxidant passing through the output section of the oxidizer 30, to provide adequate cooling throughout the speed range of operation of the burner. Speed maximum level of oxygen achievable in practice for the burner of the present invention, is at least 70% of the total amount of combustion oxygen, while the maximum speed level for the burner according to prior art is created at the level of 40% depending on the speed of burning.

The speed limit supply for the burner of the present invention increase compared with the burner according to prior art, since the improved distribution of the flow in the nozzle and a low level of turbulence lead to a decrease in the rate of mixing between the flows of fuel and oxygen within the chamber prior to combustion, as well as minimize the probability of a local shortage of oxygen consumption. Such an improvement of the characteristics of the flow provides adequate cooling chamber prior to combustion to the burner on astasia invention, even when working with extremely high speed feeder and high speed burning.

As shown, the burner of the present invention has a significantly higher thermal radiation (total increase exceeds 25%). The main increase heat radiation occurs in the band of wavelengths below 1800 nm, which indicates the increase of black-body radiation, which is the main torch generated by the burner, working with more enriched fuel (because of the higher speed level of oxygen), and, consequently, an increase in education and deposition of soot particles. Radiation heat transfer in this range of the electromagnetic spectrum is ideal for melting glass in the area of cooking, because the spectral range is in the field of optical transmittance of the molten glass. Therefore, the energy transferred from the torch, can penetrate deep into the glass melt, providing a more uniform heating and the efficient use of fuel energy.

The Figure 10 shows a side view of the burner of the present invention in a typical glass melting furnace 80. Fuel 82 and oxygen 84 are burned in the burner to create a basic torch enriched fuel 86, under which is the step oxidizer. The main torch enriched fuel has a high concentration of soot. The upward thermal radiation 90 is transmitted to the code pechi. The reaction with the oxidant supplied speed, creates a relatively hot stoichiometric torch 94 under the main torch, where the downward thermal radiation 96 is transmitted to the raw material 98 or load. The main jagged bottom of the torch is that it creates a black body radiation, which is mainly directed downwards in the direction of the raw material 98 or load. The main mechanisms that produce this effect, it increased formation of soot from the main torch enriched fuel 86, in combination with high temperature, high luminosity, the lower the torch 94 generated by the reaction between manual supplied oxidant 88 and the main torch. Because thermal radiation 96 emitted from the bottom of the torch, has an unobstructed opportunity to go down in the direction of the raw material (e.g. glass), opaque "optically thick" main torch partially prevents the upward transfer of heat radiation. Thus obtained displacement effects explicitly creates favorable conditions for the process of melting the glass, because it allows the maximum extent possible to provide heating of the surface of the glass torch, thus minimizing the direct radiative heating of the furnace roof 92.

As shown in Figure 11, were conducted laboratory measurements of thermal radiation emitted down and VVER is from the burner, according to the present invention in the band from 600 to 1800 nm. The results are presented as the dependence of reduced radiation plume from the ratio of the excess fuel is essentially the torch. Given the radiation of the flame is the quotient of the total radiation of the torch across this band by a factor of excess fuel when the total radiation of the flame, equal to 1.0 (corresponding to stoichiometric combustion without aliasing). The coefficient of excess fuel consumption of the main torch - is the actual fuel-to (main) oxidizer divided by the ratio of fuel to oxidant in stoichiometric combustion. Hence, the higher the excess fuel in conformity with the torches with more enriched fuel. The results clearly show progressively increasing the difference (offset) in the directed heat radiation with increasing ratio of excess fuel. The more enriched fuel formed the main torch, the greater will be the percentage of the total thermal radiation of a black body pointing down. Thus, the ability of the burner to operate with a high level of stepwise feed of the oxidizing agent of the present invention allows not only to create a torch with a large radiation, but also sends a significant percentage of this heat radiation in the direction of the raw material 98, protecting the vault 92 from razmernoi thermal radiation.

Figure 12-17 and the description below refer to the tip of an improved stove burner of the present invention, which improves the durability of the burner and reduces the need for maintenance of the burner. Design tip in the present context refers to the shape of the surface that separates the flow of oxidant from the fuel flow immediately before the point at which the reacting flows out of the nozzle of the burner. In Figures 12-15 shows the four common versions of the handpiece in accordance with the previous state of the art:

Figure 12 - Square edge.

Figure 13 - Round edge.

Figure 14 - prismatic edge with a single angle, with separated flow.

Figure 15 - prismatic edge with a single angle, with the associated expense.

Each type of this design over prior art has at least one design flaw, as described below.

The tip of the burner with a square edge 100, shown in Figure 12, results in separation of the flow rate of the oxidizer 102 and fuel 104 at the tip. Depending on the velocity ratio of oxidizer and fuel, this can lead to relatively large-scale eddies symmetric recirculation 106, in some sectors, which will be enriched fuel, which will in turn ceregedit to the increase of deposits of solid carbon on the tip.

The tip of the burner with a round edge 110, shown in Figure 13, also splits the flow of oxidizer 112 and fuel 114 at the tip. Depending on the velocity ratio of oxidizer and fuel, this may also lead to smaller (in comparison with a square edge), although significant turbulence symmetric recirculation 116, in some sectors, which will be enriched fuel, which will lead to an increase in deposits of solid carbon on the tip.

The burner tip 120 with prismatic edge with a single angle, with separated flow, shown in Figure 14, also causes separation of the flow rate of the oxidizer 122 and the fuel 124 at the tip. Depending on the velocity ratio of oxidizer and fuel, this also can lead to relatively large-scale eddies asymmetrical circulation 126, in some sectors, which will be enriched fuel, which will lead to an increase in deposits of solid carbon on the tip. The sharp edge 128 in the bottom right of the tip of the nozzle may also limit the conductivity in the direction from the tip, causing damage to the tip under the influence of heat load. The critical angle (αCrete) to separate the flow is nominally less than 15 degrees.

The tip of the burner 130 with prisms the political edge with a single angle, with an associated flow, shown in Figure 15, is to improve the construction shown in Figures 12-14. Since the divergence angle of the surface of the oxidant is less than the critical angle (αCretefor separation of the flow of oxidant 132 and fuel consumption 134 remains bound to the tip of the nozzle, and there is no deposition of carbon on the tip. However, thin sharp edge 138 is mechanically fragile, and the tip is subject to deformation under the influence of heat load compared to the design with prismatic edge with a single angle, with separated flow. Deformation adversely affects the performance of the burner.

As shown, each design of the handpiece shown in Figures 12-15, has at least one design flaw: it is connected either with the division of flow of one or more reactive flows or with insufficient mechanical strength. It is known that these disadvantages lead to problems relating to the operation or maintenance of the deposition of carbon or damage of the tip, which is a prerequisite for violations of the shape of the torch and degradation of the burner and/or premature failure.

Advanced tip nozzle 140 of the present invention the characteristics of erished three structural indicators, marked on the Figure 16. The main angle (α) is small enough to provide the initial curvature flows without flow separation. Radius (K) facilitates a smooth transition of flow of the oxidizer between the conical section 147 and toe 148. Compared to the sharp edge radius slows down the flow separation in this transition zone. Finally, the second acute angle (β) creates an edge nozzle, which substantially restricts the flow of gas fuel back in the direction of the oxidant in the nozzle.

The Figure 17 shows the operational benefits of an improved tip 140 of the present invention. Wide toe 148 prevents deformation under the influence of heat load, providing a wide enough path for heat dissipation from the tip, due to thermal conductivity; a second angle (β) limits the recirculation of gas fuel and depending on the velocity ratio of oxidizer and fuel at the tip of the separation of the flow of oxidant or fuel is minimal or non-existent. Thus precluded the formation of carbon deposits on the tip.

One embodiment of the invention, the estimated parameters of the tip have the following ranges:

- fixed tilt angle, α: 0<α<15°,

- turning radius, R: not an absolute requirement shall eat, but it is recommended that R>1/64 inch;

secondary angle β: β<90°.

As an example, improving the design of the burner tip in the Figure 18 shows the amount of sediment carbon 160, which are formed on the tips with a construction similar to that shown in Figure 13 for an operating period of approximately two weeks in industrial glass melting furnace. The advanced design of burner tip of the present invention had no visible deposits of carbon in the burner installed in the same position and with the same operating parameters over time, significantly exceeding two weeks.

The Figure 19 shows the layout of a typical glass melting furnace 60, having left 62 and right side 64. Burner, such as that provided by the invention, are installed on both sides and create a high-temperature flame 66 in the oven. Flue gases from the combustion of fuel and oxidant is discharged through the ducts 68, shown on the left and right side of the furnace. Downloadable charge 70 enters the furnace and is melted with heat generated by a high-temperature torch. The molten product 72 is removed from the furnace and is fed by a conveyor (not shown) in the refining zone (not shown).

The parameters of the furnace is improved in several ways as a result of improved parameters of the burner and method according to this is the overarching invention. The ability of the burner control more inertia and more jagged (compared with the burners on prior art allows you to get a longer, more resistant torch with enriched fuel with low emissions of NOx. Longer, more sustainable torch provides greater overall rate of heat transfer to the load. In addition, the combination of the best uniformity of the properties of the torch and work with a high degree of aliasing minimizes the peak temperature/radiation radiation of the flame, thus reducing the foaming. A higher rate of heat transfer from the flame to the glass increases ground temperature glass, favors the recycling of glass from the clarification zone to the zone melting, thereby reducing defects in the glass (increasing yield). Finally, elimination of carbon deposits on the tip of the burner prevents the violation of the form of the torch, increases the service life of the burner and reduces the requirements for maintenance of the burner.

Advantages of parameters of the furnace by use of a burner according to the present invention become apparent when testing furnace for the determination of its parameters, in which the burner of the present invention were installed instead of the burners according to prior art, in accordance with the description, carried away the in U.S. patent No. 5611682 (Slavejkov and others). Industrial oven used for these tests are similar to the furnace, the description of which is shown in Figure 8, which provides four positions combustion (left and right pairs of burners) and four of the chimney. The composition of raw materials, specific removal of glass (the removal rate of the products from the furnace) and the consumption of natural gas and oxygen stored completely unchanged before and after the installation of the burners of the present invention. Key operating parameters and results full-scale test furnace are presented in Table 1.

Table 1
The setting change during a full-scale test furnace with a burner according to the present invention
The average (estimated) inertia torchAn increase of 100%
Average speed of oxygen supply (% of total oxygen consumption)The increase from 5% to 70%
The average bottom temperature in the furnaceIncreased by 16°F
OutputIncreased by 5% (absolute value)
The level of emissions of NOx Decreased by 14%

Despite the above description with reference to some embodiments, the present invention is not limited to the given examples. Can be modified in the details included in volume and which is equivalent to the characteristics of the claims, without changing the essence of the invention.

1. Burner for the combustion of fuels containing:
line fuel consisting of several fuel cells, each fuel section connected to another section and is designed to supply the flow of the fuel, including
the input section of the fuel, which has a first input fuel and the first output of the fuel that is located at a distance from the first input fuel and the input section of the fuel is first checkpoint square cross-section and configured to supply the flow of the fuel flowing into the first input of fuel and out of the first fuel
the intermediate section of the fuel that has an input device of the fuel and the output device of the fuel located at a distance from the input device of the fuel with the intermediate section of the fuel is designed to supply at least part of the flow of the fuel flowing in the input device of fuel and output from the output device of the fuel, and having a second checkpoint area of the Popper is tion cross section; the second internal cross-sectional area changes from the initial entrance cross-sectional area in the input device of the fuel to different entrance cross-sectional area of the output device fuel, and
the output section of fuel, having a second input fuel and the second output of the fuel that is located at a distance from the second fuel intake; however, the output section of the fuel is designed to supply at least part of the flow of the fuel flowing into the second fuel intake and out the second outlet of the fuel; and with the third checkpoint, the cross-sectional area; and a third internal cross-sectional area, in essence, is uniform across the output section of the fuel; and
the first line of the oxidant, with a few sections of the oxidizer; however, each section of the oxidizing agent is connected to every other section of the oxidizer and is designed for flow of oxidant, including
the pressure chamber of the oxidizer, made with the possibility of passing a flow of oxidizer and having a fourth checkpoint the cross-sectional area; thus, at least part of the pressure chamber of the oxidizer is placed essentially at least near a part of at least one of the input section of the fuel, the intermediate section of the fuel and the output section of the fuel, and
output s is s oxidizer, made with the possibility of transmission of at least part of the flow of oxidizer and having a fifth checkpoint the cross-sectional area; a fifth passage cross-sectional area is less than or equal to the fourth pass-through cross-sectional area and, in fact, is uniform across the output section of the oxidizer; at least, the plot output section oxidant is, essentially, at least, near the plot of the output section of fuel.

2. Burner according to claim 1, which further comprises:
the second line of the oxidant, located next to the first line of the oxidant; the second line oxidant made with the possibility of passing another stream of the oxidant or the thread of another oxidizing agent.

3. Burner according to claim 1, which further comprises an input line of an oxidant in the form of the letter Y with the communication flow from the pressure chamber of the oxidizer, which is designed for a flow of oxidant to the pressure chamber of the oxidizer.

4. Burner according to claim 1, which further comprises at least a control valve located in the intermediate section of the fuel, where the initial passage cross-sectional area at the inlet of the fuel in the intermediate section of the fuel is smaller than the passage cross-sectional area at the exit of the fuel from the intermediate section is opleve.

5. Burner according to claim 1, in which the ratio of the fifth pass cross-sectional area of the output section of the oxidizer to the third pass-through cross-sectional area of the output section of the fuel is less than the molar ratio of oxidant to the fuel required for stoichiometric combustion.

6. Burner according to claim 2, in which another stream of the oxidant or the flow of another oxidant exiting the second line of the oxidizer placed under the flame formed by combustion of at least part of the stream of fuel coming out of the second output fuel output section of the fuel, and at least part of the flow of the oxidant exiting the output section of the oxidizer.

7. Burner for the combustion of fuels containing:
the supply line of the fuel that has multiple fuel cells, each fuel section are connected with each other by the fuel cell and is used to transfer fuel flow, including
the input section of the fuel, which has a first input fuel and the first output of the fuel that is located at a distance from the first input fuel and the input section of the fuel is the entrance to the cross-sectional area intended for the flow of the fuel flowing to the first input of fuel and out of the first fuel
the intermediate section of the fuel that has an input device of fuel and output devices the fuel, located at a distance from the input device of the fuel with the intermediate section of the fuel is designed to supply at least part of the flow of the fuel flowing in the input device of fuel and output from the output device of the fuel, and a second pass cross-sectional area; and a second internal cross-sectional area changes from the initial entrance cross-sectional area in the input device of the fuel to different entrance cross-sectional area of the output device fuel, and
the output section of fuel, having a second input fuel and the second output of the fuel that is located at a distance from the second fuel intake; however, the output section of the fuel is designed to supply at least part of the flow of the fuel flowing into the second fuel intake and out the second outlet of the fuel; and with the third checkpoint, the cross-sectional area; and a third internal cross-sectional area, in essence, is uniform across the output section of the fuel; and
the first line of the oxidant, with a few sections of the oxidizer; however, each section of the oxidizing agent is connected to every other section of the oxidizer and is designed for flow of oxidant, including
the pressure chamber of the oxidizer, is arranged to pass through the eye of the oxidizer and having a fourth checkpoint the cross-sectional area; moreover, at least part of the pressure chamber of the oxidizer is placed essentially at least near a part of at least one of the input section of the fuel, the intermediate section of the fuel and the output section of the fuel, and
the output section of the oxidizer, while the output section of the oxidizer configured to pass at least part of the flow of oxidant and has the fifth checkpoint the cross-sectional area; a fifth passage cross-sectional area is less than or equal to the fourth pass-through cross-sectional area and, in fact, is uniform across the output section of the oxidizing agent; and at least a section the output section of the oxidizer is essentially, at least, near the plot of the output section of the fuel; and
the second line of the oxidant, located next to the first line of the oxidant; the second line oxidant made with the possibility of passing another stream of the oxidant or the thread of another oxidant,
in which another stream of the oxidant or the flow of another oxidant exiting the second line of the oxidizer placed under the flame formed by combustion of at least part of the stream of fuel coming out of the second output fuel output section of the fuel, and at least part of the flow of the oxidant exiting the output section will oxidize the La, and containing at least one rail damper, located in the intermediate section of the fuel, where the initial passage cross-sectional area at the inlet of the fuel in the intermediate section of the fuel is less than the different passage cross-sectional area at the exit of the fuel from the intermediate section of fuel.

8. Burner for burning fuel having a longitudinal axis and containing the tip with
the first elongated edge near the point of fuel supply, and
the second elongated edge near the point of feed of oxidant, forming a fixed angle (α)of approximately less than 15° from a line parallel to the longitudinal axis, the intersection of the input surface that is parallel to the longitudinal axis, and
the first elongated edge and a second elongated edge form a second angle (β)that is greater than the angle of inclination (α), and less than approximately 90° from the tangent line to continue the line extending from the first elongated edge in the direction of fuel flow.

9. Burner according to claim 8, in which the second elongated edge includes an initial smooth tapered transition, forming the main angle (α), and a curved section ending at the first elongated edge.

10. The method of burning the fuel with the oxidizer, including with the BOJ stages, where used:
the fuel source;
source, at least one oxidizer;
the burner that contains
the fuel line that has multiple sections; and each fuel section connected to another section and is designed to supply the flow of the fuel, including
the input section of the fuel, which has a first input fuel and the first output of the fuel that is located at a distance from the first input fuel and the input section of the input fuel is the entrance to the cross-sectional area intended for the flow of the fuel flowing to the first input of fuel and out of the first fuel
the intermediate section of the fuel that has an input device of the fuel and the output device of the fuel located at a distance from the input device of the fuel with the intermediate section of the fuel is designed to supply at least part of the flow of the fuel flowing in the input device of fuel and output from the output device of the fuel, and a second pass cross-sectional area; and a second internal cross-sectional area changes from the initial entrance cross-sectional area in the input device of the fuel to different entrance cross-sectional area of the output device fuel, and
the output section of the fuel with a second fuel intake and the Torah output fuel located at a distance from the second fuel intake; however, the output section of the fuel is designed to supply at least part of the flow of the fuel flowing into the second fuel intake and out the second outlet of the fuel; and with the third checkpoint, the cross-sectional area; and a third internal cross-sectional area, in essence, is uniform across the output section of the fuel; and
the first line of the oxidant with many sections of the oxidizer; however, each section of the oxidizing agent is connected to every other section of the oxidizer and is designed for flow of oxidant, including
the pressure chamber of the oxidizer, made with the possibility of passing a flow of oxidizer and having a fourth checkpoint the cross-sectional area; thus, at least part of the pressure chamber of the oxidizer is placed essentially at least near a part of at least one of the input section of the fuel, the intermediate section of the fuel and the output section of the fuel, and
the output section of the oxidizer, is arranged to pass at least part of the flow of oxidizer and having a fifth checkpoint the cross-sectional area; a fifth passage cross-sectional area is less than or equal to the fourth pass-through cross-sectional area and, in fact, is rawname the Noah across the output section of the oxidizer; moreover, at least a section the output section of the oxidizer is essentially, at least, near the plot of the output section of the fuel;
serves the flow of fuel to the first input of fuel, where at least part of the fuel flow supplied from the first input of fuel in the second fuel intake;
serves the flow of oxidant to the pressure chamber of the oxidizer, where at least part of the flow of oxidizer is supplied from the pressure chamber of the oxidizer in the output section of the oxidizer; and
burn at least a portion of the fuel exiting the second outlet of the fuel, at least part of the oxidant exiting the output section of the oxidizer.

11. The method according to claim 10, which includes the following steps:
place a second line of oxidant next to the first line of the oxidant, made with the possibility of passing another stream of the oxidant or stream other oxidant supplied to the second line oxidant,
serves another stream of the oxidant or the flow of another oxidant to the second line of the oxidant and
burn at least another portion of the fuel exiting the second outlet of the fuel, at least part of the another stream of the oxidant or at least part of the oxidant exiting the second line of the oxidant.

12. The method according to claim 10, which includes the following steps:
create the input line the oxidant in the form of the letter Y with the communication flow from the pressure chamber of the oxidizer, which is designed for a flow of oxidant to the pressure chamber of the oxidizer; and
serves at least part of the oxidant in the input line of the oxidant in the form of the letter Y.

13. The method according to claim 10, which includes an additional step, in which at least one guide flap located in the intermediate section of the fuel, where the initial passage cross-sectional area at the inlet of the fuel in the intermediate section of the fuel is smaller than the passage cross-sectional area at the exit of the fuel from the intermediate section of fuel.

14. The method according to claim 10, wherein the ratio of the fifth pass cross-sectional area of the output section of the oxidizer to the third pass-through cross-sectional area of the output section of the fuel is less than the molar ratio of oxidant to the fuel required for stoichiometric combustion.

15. The method according to claim 11, in which another stream of the oxidant or the flow of another oxidant exiting the second oxidant second line oxidant, placed under the flame formed by combustion of at least part of the stream of fuel coming out of the second output fuel output section of the fuel, and at least part of the flow of the oxidant exiting the output section of the oxidizer.

16. The method of burning the fuel with the oxidant in ascollateral, where used:
the fuel source;
source, at least one oxidizer and
the burner that contains
the fuel line that has multiple sections, with each fuel section connected to another section and is designed to supply the flow of the fuel, including
the input section of the fuel, which has a first input fuel and the first output of the fuel that is located at a distance from the first input fuel and the input section of the fuel is the entrance to the cross-sectional area intended for the flow of the fuel flowing to the first input of fuel and out of the first fuel
the intermediate section of the fuel that has an input device of the fuel and the output device of the fuel located at a distance from the input device of the fuel with the intermediate section of the fuel is designed to supply at least part of the flow of the fuel flowing in the input device of fuel and output from the output device of the fuel, and a second pass cross-sectional area; a second internal cross-sectional area changes from the initial entrance cross-sectional area in the input device of the fuel to different entrance cross-sectional area of the output device of the fuel, and the intermediate section of the fuel contains at least the bottom of the guide the valve, and
the output section of fuel, having a second input fuel and the second output of the fuel that is located at a distance from the second fuel intake; however, the output section of the fuel is designed to supply at least part of the flow of the fuel flowing into the second fuel intake and out the second outlet of the fuel; and with the third checkpoint, the cross-sectional area; and a third internal cross-sectional area, in essence, is uniform across the output section of the fuel; and
the first line of the oxidant with many sections of the oxidizer;
each section of the oxidizing agent is connected to every other section of the oxidizer and is designed for flow of oxidant, including
the pressure chamber of the oxidizer, made with the possibility of passing a flow of oxidizer and having a fourth checkpoint the cross-sectional area; thus, at least part of the input pressure chamber of the oxidizer post, essentially, at least, next to part of at least one of the input section of the fuel, the intermediate section of the fuel and the output section of the fuel, and
the output section of the oxidizer, is arranged to pass at least part of the flow of oxidizer and having a fifth checkpoint the cross-sectional area; a fifth passage cross-sectional area is marsaili equal fourth pass-through cross-sectional area, and essentially, is uniform across the output section of the oxidizing agent; and at least a section the output section of the oxidizer is essentially, at least, near the plot of the output section of the fuel;
serves the flow of fuel to the first input of fuel, where at least part of the fuel flow supplied from the first input of fuel in the second fuel intake;
serves the flow of oxidant to the pressure chamber of the oxidizer, where at least part of the flow of oxidizer is supplied from the pressure chamber of the oxidizer in the output section of the oxidizer; and
burn at least a portion of the fuel exiting the second outlet of the fuel, at least part of the oxidant exiting the output section of the oxidizer;
create a second line of oxidant next to the first line of the oxidant; the second line oxidant made with the possibility of passing another stream of the oxidant or stream other oxidant supplied to the second line of the oxidizer;
serves another stream of the oxidant or the flow of another oxidant to the second line oxidant; however, at least part of the another stream of the oxidant, or at least part of another oxidant is supplied from the second line of the oxidizer; and
burn at least another portion of the fuel exiting the second outlet of the fuel, at least part of another thread oxide is of Italia or at least part of the oxidant exiting the second line of the oxidant,
another stream of the oxidant or the flow of another oxidant exiting the second line of the oxidant, placed under the flame formed by combustion of at least part of the stream of fuel coming out of the second output fuel output section of the fuel, and at least part of the flow of the oxidant exiting the output section of the oxidizer.

17. The method of burning the fuel with the oxidizer, which includes several stages, which use:
the fuel source;
the source of oxidant;
a burner for burning fuel with the oxidant to the burner longitudinal axis, containing the tip with
the first elongated edge near the point of fuel supply and a second elongated edge near the point of feed of oxidant, forming a fixed angle (α)of approximately less than 15° from a line parallel to the longitudinal axis, the intersection of the input surface that is parallel to the longitudinal axis; and
the first elongated edge and a second elongated edge form a second angle (β)that is greater than the angle of inclination (α), and less than approximately 90° from the tangent line to continue the line extending from the first elongated edge in the direction of fuel flow; and
burn at least part of Topley is a, at least part of the oxidant in the area, located near the tip of the burner.

18. The method according to 17, wherein the second elongated edge includes
the initial smooth tapered transition, forming the main angle (α), and
curved section ending at the first elongated edge.

19. The method of melting glass, which includes a method of burning fuel with the oxidizer in accordance with paragraph 10.

20. Burner according to claim 1, in which the fifth passage cross-sectional area less than the fourth passage cross-sectional area.

21. Burner according to claim 2, which contains the inlet manifold oxidant communication flow with the first line of an oxidant and a second line oxidant.

22. Burner according to item 21, which also contains a valve to regulate to regulate the flow rate of the oxidizer to the second line of the oxidizer.

23. Burner according to claim 7, which also contains the inlet manifold oxidant communication flow with the first line of an oxidant and a second line oxidant and contains a valve to regulate to regulate the flow rate of the oxidizer to the second line of the oxidizer.

24. Burner according to claim 1, in which the passage cross-sectional area of the output section of the oxidizer essentially uniform and continuous cross-sectional area of the output section of the top of the willow, essentially uniform.

25. Burner according to claim 1, in which the passage cross-sectional area of the output device fuel intermediate section of fuel, essentially, has a non-circular shape and internal cross-sectional area of the output section of fuel, essentially, has a non-circular shape.

26. Burner according to claim 1, which also contains the oxidant diffuser placed in front of the pressure chamber of the oxidizer.

27. Burner according to claim 1, which further comprises locating pins for the implementation of the attachment between the output section of the fuel and the output section of the oxidizer.

28. Burner according to paragraph 24, which also includes locating pins for secure attachment between the output section of the fuel and the output section of the oxidizer.



 

Same patents:

FIELD: heating.

SUBSTANCE: invention relates to fuel combustion process. Fuel combustion method is implemented by means of oxygen-containing gas with high oxygen content, in accordance with which to combustion chamber there sprayed is fuel jet and at least two jets of oxygen-containing gas; at that, the first or primary jet of oxygen-containing gas is supplied through the hole having diametre D and sprayed around the above fuel jet in such quantity which allows providing the first incomplete fuel combustion; at that, gases formed as a result of the above first combustion contain at least some part of unburnt fuel, and the second jet of oxygen-containing gas introduced through the hole having diametre d and located at some distance 1 from the hole of introduction of the first or primary jet of oxygen-containing gas so it can be possible to enter into combustion reaction with the fuel portion which is contained in gases formed as a result of the above first incomplete combustion; at that, fuel jet opens inside the jet of primary oxygen-containing gas at some point located at some distance in backward direction from combustion chamber wall; at that, the above point is located at distance r from that wall, and oxygen-containing gas with high oxygen content is pre-heated at least to 300°C. Ratio r/D has the value either lying within the range of 5 to 20, or lying within the range of 0.75 to 3, and ratio 1/d has the value equal at least to 2. Oxygen-containing gas with high oxygen content represents oxygen concentration which is at least 70% by volume. Fuel is subject to pre-heating up to temperature comprising at least 300°C.

EFFECT: increasing fuel combustion efficiency.

15 cl, 1 dwg

FIELD: combustion.

SUBSTANCE: device comprises combustion chamber with a layer of fluid in its bottom section, device for supplying fluid, pipeline provided with a nozzle, and device for igniting. The pipeline with a nozzle is mounted inside the fluid gate valve with a splitter mounted above the nozzle and provided with the casing made of a hollow trancated cone and mounted coaxially to the splitter with diffuser directed off the splitter upward. The fluid level in the fluid gate valve of the combustion chamber should be no lower than that of the top edges of the splitter casing.

EFFECT: enhanced safety.

1 cl, 2 dwg

FIELD: heating.

SUBSTANCE: invention relates to fuel combustion process. Fuel combustion method is implemented by means of oxygen-containing gas with high oxygen content, in accordance with which to combustion chamber there sprayed is fuel jet and at least two jets of oxygen-containing gas; at that, the first or primary jet of oxygen-containing gas is supplied through the hole having diametre D and sprayed around the above fuel jet in such quantity which allows providing the first incomplete fuel combustion; at that, gases formed as a result of the above first combustion contain at least some part of unburnt fuel, and the second jet of oxygen-containing gas introduced through the hole having diametre d and located at some distance 1 from the hole of introduction of the first or primary jet of oxygen-containing gas so it can be possible to enter into combustion reaction with the fuel portion which is contained in gases formed as a result of the above first incomplete combustion; at that, fuel jet opens inside the jet of primary oxygen-containing gas at some point located at some distance in backward direction from combustion chamber wall; at that, the above point is located at distance r from that wall, and oxygen-containing gas with high oxygen content is pre-heated at least to 300°C. Ratio r/D has the value either lying within the range of 5 to 20, or lying within the range of 0.75 to 3, and ratio 1/d has the value equal at least to 2. Oxygen-containing gas with high oxygen content represents oxygen concentration which is at least 70% by volume. Fuel is subject to pre-heating up to temperature comprising at least 300°C.

EFFECT: increasing fuel combustion efficiency.

15 cl, 1 dwg

FIELD: heating.

SUBSTANCE: invention related to energy, particularly to burner devices and can be used in gas turbine equipment. Burner device consists of a case (1), a fuel nozzle (2), a front device (3), a fire tube (4). The burner device belongs to gas-turbine engine combustion chamber. The front device executed with holes for fuel nozzles installation (2). The fire tube (4) with the front device (3) located inside of the combustion chamber cage (5). Fuel nozzles (2) connected to a gas ring collector (6). In combustion chamber fire tube and cage (5) between wall area air nozzles (7) located radically. Air nozzles (7) connected to the common ring air collector (9). The air collector (9) located in the case (1).

EFFECT: invention allows to regulate primary air supply to the combustion chamber section during equipment operation, burning device design simplification, it operation safety stays constant, possibility of device change on the running gas turbine equipment.

1 dwg

FIELD: heating systems.

SUBSTANCE: invention refers to gas burners with separate air and gaseous fuel supply. The effect is achieved in gas burner (1) containing main metal housing (6), an inner tube for fuel gas, at least two outer tubes (10) for fuel gas, single tube (8) for supplying pre-heated air, fuel gas supply control system, refractory block (30) and a group of nozzles (20) which are located in a circumferential direction coaxially in relation to inner tube and meant for spraying pre-heated air into combustion chamber.

EFFECT: limit reduction of NOx concentration in exit combustion products.

29 cl,13 dwg

FIELD: heating.

SUBSTANCE: invention relates to powder engineering. The method of fuel firing with oxygen-containing gas wherein fuel jet is injected and, at least, two jets of oxygen containing gas that features high oxygen content. Note here that the 1st jet of aforesaid gas, called a primary jet, is injected to allow its contact with the fuel jet and to form the 1st incomplete firing. Note here that outlet gases, thereafter, contains, nevertheless, at least, one fraction of fuel. Note also that the 2nd aforesaid jet is injected at the distance of l1 from the fuel jet to allow firing together with the said 1sr fuel fraction existing in outlet gases after 1st firing. Oxygen containing gas with low oxygen content is injected at the distance l2 from the fuel jet providing the firing together with the said outlet gases after 1st firing, where l2>l1.

EFFECT: firing gas with low oxygen content.

25 cl, 1 dwg

FIELD: heating.

SUBSTANCE: invention relates to power engineering. The proposed method of fuel firing with oxygen-containing gas wherein fuel jet is injected and, at least, two jets of oxygen containing gas that features high oxygen content. Note here that the 1st jet of aforesaid gas, called a primary jet, is injected to allow its contact with the fuel jet and to form the 1st incomplete firing. Note here that outlet gases, thereafter, contains, nevertheless, at least, one fraction of fuel. Note also that the 2nd aforesaid jet is injected at the distance from the fuel jet to allow firing together with the said 1st fuel fraction existing in outlet gases after 1st firing. The oxidiser primary jet is divided into two primary jets, that is, 1st primary jet, called the central primary oxidiser jet injected into fuel jet centre and 2nd primary jet called the embracing primary jet injected coaxially and around the fuel jet. The rate of the oxidiser central primary jet injection exceeds that of fuel jet injection. The fuel jet injection rate exceeds that of the 1st embracing oxidizer injection. The oxidiser 2nd jet injection rate exceeds that of the oxidiser embracing primary jet. The distance between the oxidiser central primary jet injection and its 2nd jet injection vs the rate of injection of the oxidiser 2nd jet varies between 10-3 and 10-2. The oxidiser 3rd jet is injected at the point located between the point of injecting the oxidiser central primary jet and that of injecting 2nd oxidising jet. The rate of injecting oxidiser 2nd jet exceeds that injecting oxidiser 3rd jet. The distance between the point of injecting oxidiser 2nd jet and that of injecting oxidiser central primary jet vs the distance between the point of injecting oxidiser 3rd jet and that of injecting oxidiser primary jet varies from 2 to 10. Two primary oxidiser jets feature identical oxygen concentration. The oxidizer central primary jet oxygen concentration exceeds that of oxidiser embracing primary jet.

EFFECT: higher furnace reliability.

10 cl, 1 dwg

FIELD: power engineering.

SUBSTANCE: method of fuel combustion when at least one fuel and at least two oxidants are injected: the first oxidant is injected at I1 distance equal to 20 cm at maximum and preferably 15 cm at maximum from point of fuel injection. The second oxidant is injected at I2 distance from point of fuel injection while I2 is greater than I1. Oxidants are injected in such amounts that sum of their amounts is equal to at least stoichiometric amount of oxidant required to provide combustion of injected fuel. The first oxidant is oxygen-enriched air at maximum temperature of 200 °C, and the second oxidant is air preheated to temperature of at least 300 °C. Air is enriched with oxygen so that oxygen concentration in enriched air is at least 30%. Oxygen-enriched air is obtained by mixing ambient air with oxygen from cryogenic source. Preheated air is heated by means of heat exchange using part of hot combustion products. At least two oxidants are injected at I1 distance equal to 20 cm at maximum and preferably 15 cm at maximum while one oxidant called primary is injected mixed with fuel or near fuel and another oxidant called secondary is injected at distance from fuel. Amount of oxidant injected by means of primary oxidant jet ranges from 2 to 50% of oxygen stoichiometric amount required to provide combustion of injected fuel. The secondary oxidant is separated into multiple jets of secondary oxidant. The second oxidant injected at distance I2 is separated into multiple jets of oxidant.

EFFECT: fuel combustion using oxygen as oxidant suitable for retrieving energy from furnace gases.

8 cl

FIELD: the invention refers to the technology of using a cumulative jet.

SUBSTANCE: the mode of formation of at least one cumulative jet includes feeding of at least one gas jet out of at least one nozzle with a converging/diverging configuration located in an injector having a face surface of the injector. At that the face surface of the injector has openings located along the circumference around at least one nozzle, moreover the indicated at least one gas jet has a supersonic speed when it is formed at the output from the face surface of the injector and remains supersonic on a distance coming to at least 20d, where d- the diameter of the output opening of the indicated at least one nozzle. Feeding of fuel from the first group of openings located along the circumference and feeding of an oxidizing agent from the second group of openings located along the circumference. Incineration of fuel and the oxidizing agent fed from the first and the second groups of openings located along the mentioned circumference for formation of a flame shell around at least one gas jet. A great number of gas jets are fed from the injector. The fuel and the oxidizing agents are fed from the first group of openings and from the second group of openings correspondingly alternate with each other on the circumference along which they are located. At least one gas jet, the fuel and the oxidizing agent are fed from the injector directly into the space for injection without passing the zone of recycling formed with the extender of the injector. At least one gas jet passes at a prescribed distance coming at least to 20d, where d- is the diameter of the output opening of the nozzle from which exits a gas jet keeping the diameter of the mentioned gas jet in essence constant.

EFFECT: the invention allows make an arrangement with the aid of which it is possible to form effective cumulative gas jets without need in an extender in the injector or in any other element for forming recycling zone for gases fed from the injector.

9 cl, 3 dwg

FIELD: power engineering.

SUBSTANCE: method comprises injecting at least one type of fuel and at least one oxidizer. The primary oxidizer is injected together with the fuel to generate first incomplete burning. The gases emitting from the first burning comprises at least a part of the fuel, whereas the secondary oxidizer is injected downstream of the site of the fuel injection at a distance larger than that between the fuel injection and primary oxidizer closest to the fuel injection so that to be burnt out together with the fuel part. The flow of the first oxidizer is branched into at lest two primary flows.

EFFECT: reduced emission of nitrogen oxides.

40 cl, 8 dwg

The invention relates to a method for partial oxidation of hydrocarbons and gaseous mixtures containing hydrogen and carbon monoxide

Gas burner // 2213300
The invention relates to a power system, can be used in stoves for burning gaseous fuel and improves the reliability and durability of the burner, to exclude the output of the fuel outside the torch

FIELD: power engineering.

SUBSTANCE: method comprises injecting at least one type of fuel and at least one oxidizer. The primary oxidizer is injected together with the fuel to generate first incomplete burning. The gases emitting from the first burning comprises at least a part of the fuel, whereas the secondary oxidizer is injected downstream of the site of the fuel injection at a distance larger than that between the fuel injection and primary oxidizer closest to the fuel injection so that to be burnt out together with the fuel part. The flow of the first oxidizer is branched into at lest two primary flows.

EFFECT: reduced emission of nitrogen oxides.

40 cl, 8 dwg

FIELD: the invention refers to the technology of using a cumulative jet.

SUBSTANCE: the mode of formation of at least one cumulative jet includes feeding of at least one gas jet out of at least one nozzle with a converging/diverging configuration located in an injector having a face surface of the injector. At that the face surface of the injector has openings located along the circumference around at least one nozzle, moreover the indicated at least one gas jet has a supersonic speed when it is formed at the output from the face surface of the injector and remains supersonic on a distance coming to at least 20d, where d- the diameter of the output opening of the indicated at least one nozzle. Feeding of fuel from the first group of openings located along the circumference and feeding of an oxidizing agent from the second group of openings located along the circumference. Incineration of fuel and the oxidizing agent fed from the first and the second groups of openings located along the mentioned circumference for formation of a flame shell around at least one gas jet. A great number of gas jets are fed from the injector. The fuel and the oxidizing agents are fed from the first group of openings and from the second group of openings correspondingly alternate with each other on the circumference along which they are located. At least one gas jet, the fuel and the oxidizing agent are fed from the injector directly into the space for injection without passing the zone of recycling formed with the extender of the injector. At least one gas jet passes at a prescribed distance coming at least to 20d, where d- is the diameter of the output opening of the nozzle from which exits a gas jet keeping the diameter of the mentioned gas jet in essence constant.

EFFECT: the invention allows make an arrangement with the aid of which it is possible to form effective cumulative gas jets without need in an extender in the injector or in any other element for forming recycling zone for gases fed from the injector.

9 cl, 3 dwg

FIELD: power engineering.

SUBSTANCE: method of fuel combustion when at least one fuel and at least two oxidants are injected: the first oxidant is injected at I1 distance equal to 20 cm at maximum and preferably 15 cm at maximum from point of fuel injection. The second oxidant is injected at I2 distance from point of fuel injection while I2 is greater than I1. Oxidants are injected in such amounts that sum of their amounts is equal to at least stoichiometric amount of oxidant required to provide combustion of injected fuel. The first oxidant is oxygen-enriched air at maximum temperature of 200 °C, and the second oxidant is air preheated to temperature of at least 300 °C. Air is enriched with oxygen so that oxygen concentration in enriched air is at least 30%. Oxygen-enriched air is obtained by mixing ambient air with oxygen from cryogenic source. Preheated air is heated by means of heat exchange using part of hot combustion products. At least two oxidants are injected at I1 distance equal to 20 cm at maximum and preferably 15 cm at maximum while one oxidant called primary is injected mixed with fuel or near fuel and another oxidant called secondary is injected at distance from fuel. Amount of oxidant injected by means of primary oxidant jet ranges from 2 to 50% of oxygen stoichiometric amount required to provide combustion of injected fuel. The secondary oxidant is separated into multiple jets of secondary oxidant. The second oxidant injected at distance I2 is separated into multiple jets of oxidant.

EFFECT: fuel combustion using oxygen as oxidant suitable for retrieving energy from furnace gases.

8 cl

FIELD: heating.

SUBSTANCE: invention relates to power engineering. The proposed method of fuel firing with oxygen-containing gas wherein fuel jet is injected and, at least, two jets of oxygen containing gas that features high oxygen content. Note here that the 1st jet of aforesaid gas, called a primary jet, is injected to allow its contact with the fuel jet and to form the 1st incomplete firing. Note here that outlet gases, thereafter, contains, nevertheless, at least, one fraction of fuel. Note also that the 2nd aforesaid jet is injected at the distance from the fuel jet to allow firing together with the said 1st fuel fraction existing in outlet gases after 1st firing. The oxidiser primary jet is divided into two primary jets, that is, 1st primary jet, called the central primary oxidiser jet injected into fuel jet centre and 2nd primary jet called the embracing primary jet injected coaxially and around the fuel jet. The rate of the oxidiser central primary jet injection exceeds that of fuel jet injection. The fuel jet injection rate exceeds that of the 1st embracing oxidizer injection. The oxidiser 2nd jet injection rate exceeds that of the oxidiser embracing primary jet. The distance between the oxidiser central primary jet injection and its 2nd jet injection vs the rate of injection of the oxidiser 2nd jet varies between 10-3 and 10-2. The oxidiser 3rd jet is injected at the point located between the point of injecting the oxidiser central primary jet and that of injecting 2nd oxidising jet. The rate of injecting oxidiser 2nd jet exceeds that injecting oxidiser 3rd jet. The distance between the point of injecting oxidiser 2nd jet and that of injecting oxidiser central primary jet vs the distance between the point of injecting oxidiser 3rd jet and that of injecting oxidiser primary jet varies from 2 to 10. Two primary oxidiser jets feature identical oxygen concentration. The oxidizer central primary jet oxygen concentration exceeds that of oxidiser embracing primary jet.

EFFECT: higher furnace reliability.

10 cl, 1 dwg

FIELD: heating.

SUBSTANCE: invention relates to powder engineering. The method of fuel firing with oxygen-containing gas wherein fuel jet is injected and, at least, two jets of oxygen containing gas that features high oxygen content. Note here that the 1st jet of aforesaid gas, called a primary jet, is injected to allow its contact with the fuel jet and to form the 1st incomplete firing. Note here that outlet gases, thereafter, contains, nevertheless, at least, one fraction of fuel. Note also that the 2nd aforesaid jet is injected at the distance of l1 from the fuel jet to allow firing together with the said 1sr fuel fraction existing in outlet gases after 1st firing. Oxygen containing gas with low oxygen content is injected at the distance l2 from the fuel jet providing the firing together with the said outlet gases after 1st firing, where l2>l1.

EFFECT: firing gas with low oxygen content.

25 cl, 1 dwg

FIELD: heating systems.

SUBSTANCE: invention refers to gas burners with separate air and gaseous fuel supply. The effect is achieved in gas burner (1) containing main metal housing (6), an inner tube for fuel gas, at least two outer tubes (10) for fuel gas, single tube (8) for supplying pre-heated air, fuel gas supply control system, refractory block (30) and a group of nozzles (20) which are located in a circumferential direction coaxially in relation to inner tube and meant for spraying pre-heated air into combustion chamber.

EFFECT: limit reduction of NOx concentration in exit combustion products.

29 cl,13 dwg

FIELD: heating.

SUBSTANCE: invention related to energy, particularly to burner devices and can be used in gas turbine equipment. Burner device consists of a case (1), a fuel nozzle (2), a front device (3), a fire tube (4). The burner device belongs to gas-turbine engine combustion chamber. The front device executed with holes for fuel nozzles installation (2). The fire tube (4) with the front device (3) located inside of the combustion chamber cage (5). Fuel nozzles (2) connected to a gas ring collector (6). In combustion chamber fire tube and cage (5) between wall area air nozzles (7) located radically. Air nozzles (7) connected to the common ring air collector (9). The air collector (9) located in the case (1).

EFFECT: invention allows to regulate primary air supply to the combustion chamber section during equipment operation, burning device design simplification, it operation safety stays constant, possibility of device change on the running gas turbine equipment.

1 dwg

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