A method of burning fuel oil and a device for its implementation
(57) Abstract:The invention relates to the field of heat and is designed for combustion of fuel, mostly liquid in boiler furnaces, stoves and energy-technological units for the preparation of fluid and thermal treatment of industrial waste and can be used for burning fuel oil and other liquid fuels in different fuel combustion devices. The technical result consists in increasing the quality of combustion, reducing the content of nitrogen and sulfur oxides in the combustion products and the improvement of its dispersion characteristics, is ensured by the fact that in the proposed method, conduct secondary mixing the resulting primary fuel-air mixture with fuel oil, which additionally serves twisted counter flow at an acute angle to the direction of flow of the fuel-air mixture. In addition, the device for implementing the method of burning fuel oil is supplied by the secondary mixer and additional tangential feed of fuel, secondary mixer is installed coaxially with the main mixer, and a flow channel of air or steam into the main mixer is made in the form of the injector, and the main CME is using a tangential flow channel of the fuel oil summed up in the secondary mixer. 2 S. and 2 C.p. f-crystals, 5 Il. The invention relates to the field of heat and is designed for combustion of fuel, mostly liquid in boiler furnaces, stoves and energy-technological units for the preparation of fluid and thermal treatment of industrial waste, and can be used for burning fuel oil and other liquid fuels in different fuel combustion devices.The known method of heating oil on the author's certificate of the USSR 1263967, CL F 23 D 5/00, 1986, whereby the mixing of the components are a pair of ejection active jet fuel.The main disadvantage of this method is the low quality of fuel combustion.A known method of burning fuel oil in the author's certificate of the USSR 1455128, CL F 23 9/00, F 23 D 11/00, 1989., adopted by the applicant for the prototype. According to this method, part of the fuel oil pre-assign and serves on the axis of the vortex combustion chamber together with the gases recirculated air supplied to the annular jet around the axial flow part of the oil.The disadvantage of this method is insufficient dispersion of the fuel and low quality combustion.Known nozzle on the author's certificate of the USSR 1361426, to the peripheral channels, and a valve mounted in the inner channel with the possibility of longitudinal movement, both the housing and the spool is made in the cross-section of rectangular shape with abutting one to another lower base and with the formation of the peripheral channel on one side only, the opposite grounds, and the spool is made with an oblique cut, facing in the direction of fuel flow.The disadvantage of this nozzle is that obtained by the air-fuel mixture has insufficient dispersion and low quality combustion.Known burner device according to the author's certificate of the USSR 1328640, CL F 23 D 5/00, 1987, adopted by the applicant for the prototype. It includes a housing coaxially with the mixer in the form of a Laval nozzle, the Central fuel tube and channel recirculation of products of combustion, with the mixer set hassebroek connected to the fuel tube by means of recirculation of combustion products. Hassebroek made in the form of a tube with an open end, is placed opposite to the mixer. In addition, hassebroek can be made in the form of a header with perforated walls, perforation which is located opposite to the mixer and the fuel tube and the channel rnu provides receiving and combustion quality.An object of the invention is to improve the quality of combustion, reducing the content of nitrogen and sulfur oxides in the combustion products and the improvement of its dispersion characteristics.The problem is solved in that in the proposed method, conduct secondary mixing the resulting primary fuel-air mixture with fuel oil, which additionally serves twisted counter flow at an acute angle to the direction of flow of the fuel-air mixture.In addition, the device for implementing the method of burning fuel oil is supplied by the secondary mixer and additional tangential feed of fuel, secondary mixer is installed coaxially with the main mixer, and a flow channel of air or steam into the main mixer is made in the form of the injector, and the main mixer and second mixer connected to each other via a channel, which is made in the form of an injector, and an additional tangential flow channel of the fuel oil summed up in the secondary mixer.In addition, the primary and secondary tangential input channels have separate oil flow through the pressure regulators and at length made with the possibility of counter filing mA and steam and the fuel-air mixture.In addition, additional tangential flow channel of the fuel oil is placed symmetrically to the main channel of the fuel oil supply.In Fig.1 shows a device for burning fuel oil, General view;
in Fig.2 - section a-a in Fig.1;
in Fig.3 - section b-B in Fig.1;
in Fig.4 - section b-b In Fig.1;
in Fig.5 - spiral groove on the surface of the supply channel of the fuel oil.The device for implementing the method of burning fuel oil includes a housing 1, a tangential channel 2 fuel oil supply and tangential channel 3 supply of air or steam. In case 1 the main mixer 4 and the secondary mixer 5 coaxially with the main mixer 4. Channel 3 supply of air or steam into the main mixer 4 is supplied by the pressure regulator 6 and the receiver 7 with tangential swirler 8, and the output end thereof is made in the form of the injector 9. And the main mixer 4 and the secondary mixer 5 are interconnected by a channel, which is made in the form of injector 10. The device is equipped with additional tangential channel 11 of the fuel oil supply, which is summed up in the secondary mixer 5 and equipped with a pressure regulator 12 of the fuel oil supply or overlap. Channel 2 of the main fuel oil supply system is also equipped with a pressure regulator 13. Kanau 15 in front of the furnace and mixing it with the already prepared fuel-air mixture. Moreover, the tangential channels 2 and 11 have separate feeding and at length made with the possibility of counter-feed at an acute angle 16 of the oil in the mixer 4, or 5 twisted opposite stream through the spiral groove 17, is executed on the conical surface 18 of each channel 2 and 11. That is, the output ends of the channels made under counter acute angle to the axis of the device and the feed direction, respectively, of air or steam and the fuel-air mixture. As well as additional tangential channel 11 and the main channel 2 fuel oil supply placed symmetrically about the axis of the device. Moreover, additional tangential channel 11 is made in a clockwise direction, and the main channel 2 counterclockwise.The method is as follows.Channel 3 supply air or steam serves the air, twisting through the swirler 8, accumulates in the receiver 7 and passing through the injector 9, are included in the main mixer 4 with high blood pressure. Here, in the main mixer 4, the tangential channel 2 serves the oil, swirling through the spiral groove 17 under pressure not more than 0.3 air pressure. When two flows directed towards each other, under the OST is the author of power picks up and entrain air or steam flow, mixing and forming the fuel mixture, which is then through the injector 10 is fed into the second mixer 5. In the secondary mixer 5 conduct secondary mixing already initially received in the main mixer 4 of the fuel-air mixture with fuel oil, which additionally serves twisted with spiral grooves 17 for additional tangential channel 11 counter flow at an acute angle 16 to the feed direction of the obtained air-fuel mixture. The supply pressure of the oil in the channel 11 is also equal to not more than 0.3 pressure supply of air or steam. In the secondary mixer 5 is the same process as in the main mixer 4. At a meeting of the flows of fuel-air mixture obtained in the main mixer 4, and fuel oil, additionally filed on channel 11, is generated torque of the fuel particles, which under the action of centrifugal force picks up and entrain the air / fuel mixture, enriches it with oil, additionally enjoyed, and enriched mixture enters the oil-gas burner 15. Restriction of feed pressure oil in the amount of 0.3 from the air pressure selected from the conditions of safe operation. If you apply the oil with high pressure, the fuel-air mixture policits is SS="ptx2">The use of the proposed solutions helped to reduce the content of nitrogen and sulfur oxides in the combustion products, to eliminate the smoke environment, to improve the dispersion characteristics of the fuel, thereby to improve the quality of combustion and to increase fuel economy and improve the environment. 1. A method of burning fuel oil by mixing with air or steam, characterized in that conduct secondary mixing the resulting primary fuel-air mixture with fuel oil, which additionally serves twisted counter flow at an acute angle to the direction of flow of the fuel-air mixture.2. Device for burning fuel oil containing tangential channels of supply of oil and air or steam receiver with vane swirler, mixer, characterized in that it is provided with a secondary mixer and additional tangential feed of fuel, secondary mixer is installed coaxially with the main mixer, and a flow channel of air or steam into the main mixer is made in the form of the injector, and the main mixer and second mixer connected to each other via a channel, which is made in the form of the injector, and the additional one is the, what primary and secondary tangential input channels have separate oil flow through the pressure regulators and at length made with the possibility of counter fuel oil supply to the mixer twisted opposite stream at an acute angle to the feed direction, respectively, of air or steam and the fuel-air mixture.4. The device according to p. 2, characterized in that the additional tangential flow channel of the fuel oil is placed symmetrically to the main supply channel of the fuel oil.
SUBSTANCE: nozzle has mixing chamber whose section arranged downstream of the radial nozzles of the first sprayer is conical. The nozzles of the third sprayer are arranged over the periphery at the outlet of the conical section of the chamber. The nozzles of the third sprayer are connected with the ring row of the passages of the first sprayer. The nozzles of the third sprayer are mounted at an angle of to the vertical axis of the nozzle and under an angle of to its plane.
EFFECT: enhanced efficiency.
1 cl, 2 dwg
SUBSTANCE: burner is made of well of specified length (up to 650 mm). The fuel flowing through stabilizer of fuel supply enters the fuel supply pipe and then through fuel nozzles to the mixing chamber of the nozzle. The fuel jet impacts on the conical hollow in the working face of the deflector, thus enhancing the spraying of fuel. The compressed steam enters the ring passage defined by the fuel and steam supply pipes. The steam then enters the first (hydraulic) spraing stage of the mixing chamber through the steam nozzles drilled in the swirler radially and tangentially. The mixing chamber is interposed between the hydraulic deflector and exit section of the fuel nozzle. The steam entrains the fuel jet broken down with the deflector and then continues to break it in the second (gas) spraying stage, in the zone around the rod of the hydraulic deflector.
EFFECT: improved quality of spraying.
3 cl, 4 dwg
FIELD: mechanical engineering; gas-turbine engines.
SUBSTANCE: proposed gas-turbine engine has central stage arranged in gas duct of engine from its part arranged higher relative to direction of main gas flow to part lower in direction of main gas flow and provided with exhaust gas cone forming device in direction of main gas flow, and guide arrangement. Gas-turbine engine has group of blades, group of fuel nozzles and group of igniters. Guide arrangement is located in zone of edge of exhaust gas cone-forming device arranged higher relative to direction of main gas flow. Group of blades is located in gas duct out of the limits of central stage. Blades are provided with atomizing guides extending through blades. Fuel nozzles are installed on inner ends of corresponding atomizing guides. Each nozzle is provided with input, output and passage between input and output. Passage has part arranged to direct fuel flow to first part of passage surface located across and widening downwards in direction of flow with subsequent deflection fuel flow by first part of surface and its outlet from nozzle. Igniters are arranged in corresponding atomizing guides for igniting fuel from corresponding fuel nozzle.
EFFECT: provision of reliable lighting up in afterburner, improved recirculation of fuel in flow.
13 cl, 8 dwg
FIELD: power engineering.
SUBSTANCE: coaxial jet nozzle comprises hollow tip that connects the space of one of the fuel components with the combustion zone and bushing that embraces the tip to define a ring space and connects the space of the other fuel component with the combustion zone. The exit section of the tip is provided with the radial grooves so that the periphery of the central jet bounded by the generatrices of the beams is no more than 3s, and the beam length is 2.3-2.5s, where s is the beam thickness.
EFFECT: enhanced completeness of combustion.
1 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: module of burner for gas generator consists of two-step spreader of two-component mixture flow, of two component supplying tubes running from two-step two component mixture spreader, and of face plate of burner, where there pass tubes for supply of two-component mixture. The face plate contains a cooling system designed for plate cooling. Further, the module of the gas generator burner consists of circular nozzles built in the face plate of the burner; also each circular nozzle envelops a corresponding tube supplying two-component mixture. The two-step flow spreader of two component mixture flow contains a main cavity consisting of spreaders of flow of the first step and of secondary cavities diverging from the main cavity on further ends of the spreaders of the first step. Also each secondary cavity comprises the spreaders of flow of the second step. Tubes for supply of two-component mixture run from each secondary cavity on the further ends of the spreaders of the second step flow. The face plate of the burner contains a porous metal partition with nozzles passing through it; the cooling system has a porous metal partition cooled with reagents infiltrating through the porous metal face plate. The face plate of the burner contains a back plate, a front plate and a channel of cooling medium between the back and front plates. The cooling system contains the cooling medium channel. In the cooling system cooling medium flows through this channel to cool the front plate. The front plate contains transition metal. The burner module additionally contains conic elements running through the back plate and the front plate; also each conic element is installed on the end of each tube for supply of two component mixture. Each conic element contains a circular nozzle.
EFFECT: raised efficiency of installation for gasification of carbon containing materials.
20 cl, 8 dwg
FIELD: machine building.
SUBSTANCE: pneumatic burner consists of gas and fuel supplying pipes, fuel nozzle, hollow case and flange. The fuel nozzle consists of two cylinder sections and one conic section. A circular diaphragm with profiled elliptic orifices is installed in the hollow case. The orifices are inclined relative to axis of the fuel nozzle at angle equal to angle of taper of a coaxial conic channel. The fuel nozzle can additionally contain a guiding tip with diffusion hole. The gas supplying pipe is preferably set tangentially to the hollow case. The burner can additionally have the coaxial conic channel formed with the hollow case and the guiding tip with the diffusion hole. Geometry of the coaxial conic channel is preferably made controlled.
EFFECT: reduced operational pressure fall of fuel; increased radial and circumferential uniformity of fuel distribution in spray; control of distribution of drops around diameters.
5 cl, 1 dwg
FIELD: machine building.
SUBSTANCE: atomiser of, primarily, liquid-propellant rocket engine comprises casing with fuel feed adapter. Note here that the latter is arranged inside said case at pylons while its channel is connected with fuel chamber via bores made in said pylons. In includes the sleeve arranged with ring clearance at said case to make circular gaseous oxidiser channel connected with oxidiser chamber via channels in the casing between its wall and fuel feed pylons. Adapter channel is closed at its inlet while its inner chamber communicates with ring gap between adapter and said sleeve via radial bores made at outlet. Note here that sleeve outlet has stepped expansion with its chamber connected with fuel chamber via tangential channels made in sleeve wall. In compliance with one version, sleeve outlet expansion accommodated hollow cylinder making an extension of sleeve inner channel to make ring gap with ring expansion outlet cylindrical surface. Chamber of said dap communicates via tangential bores with fuel chamber. Axial bore is made at adapter end. Stepped expansion is made at adapter outlet. Note here that bores equally spaced in circle and at angle to adapter axis are made at adapter end. Stepped expansion is made at adapter outlet. Note here that bores equally spaced in circle and at angle to adapter axis are made at adapter end located in the plane of sleeve tangential bores.
EFFECT: higher completeness combustion and better mix formation.
5 cl, 11 dwg
SUBSTANCE: fuel tube for a burner, and namely for a gas turbine burner, includes an end that has a surface for nozzles, as well as at least two fuel nozzles. The surface for the nozzles is equipped with splines between the fuel nozzles and is made in the form of an annular conical surface. The splines pass through the above surface perpendicular to the circumferential direction of the annular surface. The end is made in the form of a flattened cone. The side surface of the flattened cone forms the surface for the nozzles.
EFFECT: invention is aimed at increasing the nozzle service life.
7 cl, 3 dwg
FIELD: energy engineering.
SUBSTANCE: device comprises a shell with a shaped inlet and outlet, mounted on the frame, a pilot burner located inside the shell, a mixing head representing two toroid-shaped collectors located on the same axis, in which the pneumatic nozzles connecting them are set, at that one collector is connected to the system of feeding compressed air or steam and the other collector is connected to the hydrocarbon fluid feeding system.
EFFECT: increase in efficiency and completeness of combustion process of hydrocarbon fluid.
2 cl, 4 dwg
FIELD: fire safety.
SUBSTANCE: pneumatic nozzle comprises the fluid and the gas supply systems and the nozzle, the liquid supply system is carried out in two directions comprising the axial liquid supply through the inlet pipe and the confuser and the cylindrical nozzle, connected in series and coaxial with it, and the tangential liquid supply is carried out through the housing in the form of a cylindrical-conical sleeve, coaxial with the cylindrical nozzle, on the cylindrical part thereof the annular vortex chamber with the liquid supply pipe is fixed. Along the annular chamber edges, two rows of inlet fluid tangential channels are provided, each row comprising at least three tangential channels connecting the annular chamber with the cylindrical cavity of the housing, to which the circular plate is coaxially fixed, located perpendicularly to the axis of the annular vortex chamber and rigidly connected to the cylindrical cavity of the housing in its end section, and a slotted nozzle is attached perpendicularly to the circular plate. The slot nozzle is made combined and consisting of two mutually perpendicular rectangular parallelepipeds with throttle through openings of a rectangular cross section, connected with the housing cavity, and the divider of the two-phase flow is attached coaxially to the circular plate, to its peripheral portion, formed as a perforated conical surface surrounding the slotted nozzle with throttle through openings of a rectangular cross section connected to the housing cavity.
EFFECT: increased efficiency of the gas-drop jet formation and expanding its supply area.
2 cl, 2 dwg