Gas burner unit
(57) Abstract:The invention relates to a power system, in particular to the use of natural gas as a source of thermal energy. The technical result of the invention is to obtain at the outlet of the burner pulsating flow of the gas mixture. This technical result is due to the fact that gas-burning unit containing gas burner housing and pipelines for the supply of air and natural gas, is supplied connected with a source of pressure or vacuum pulsator and two filled with liquid and connected to a bottom of the tank and the burner is equipped located along the gas after the point of its introduction into the air stream by the device for selection and reverse feed gas mixture with transporting it by pipeline, with the upper portion of one container is connected with the pulsator, and the upper part of the other with the discharge piping. 1 Il. The present invention relates to a power system, in particular to the use of natural gas as a source of thermal energy.Known gas-burning unit that contains the main burner, the gas supply to the gas, fan for neirogennogo gas in industrial facilities. The Handbook. - M.: Energoatomizdat, 1992, pp. 50-51). The lack of gas burner unit of this type is in a stable flow of the combustible mixture, which has the consequence of further her uniform combustion in the furnace.Closest to the present invention is a gas burner unit comprising a burner housing, a pipe for supplying a gas, a fan with a duct to blow air into the burner and shield of automatic control (see the above source, page 51-52). The main disadvantage of gas burner unit of this type is in a stable flow of the combustible mixture.The following should be noted. In the above structures, gas-burning units used gas burner with forced air supply. Such burners are high-quality education of the gas mixture, i.e., sufficiently good characteristics of the mixing device. The proposed solution, however, can be realized when using gas burners injection type, in which the air required for combustion air at the expense of the kinetic energy of the jet of natural gas flowing from the nozzle.Those who twostorey mixture, which in turn leads to an increase in the intensity of the heat transfer processes in heat generating apparatus using the heat of combustion of natural gas (steam boiler, gas-air heat exchanger and so on).This technical result is due to the fact that gas-burning unit containing gas burner housing and pipelines for the supply of air and natural gas, is supplied connected with a source of pressure or vacuum pulsator and two filled with liquid and connected to a bottom of the tank and the burner is equipped located along the gas after the point of its introduction into the air stream by the device for selection and reverse feed gas mixture with transporting it by pipeline, with the upper portion of one container is connected with the pulsator, and the upper part of the other with the discharge pipe.The invention consists in the following.The use of pulses in carrying out various processes are known. However, the pulsed mode of the feed gas mixture to a combustion valid under certain conditions, chief among which is the constant composition of the gas mixture with a specified horse pulsation of the gas and air flow, i.e., equal changing their consumption, which greatly complicate the design of the burner and the automatic control system. When using injection burners pulsating flow of natural gas cannot be selected and, of course, immutable during the construction of the burner to provide a constant ratio between the quantity of gas supplied and the amount of drawn air. The proposed solution ensures the stability of the composition of the gas mixture while simultaneously pulsing mode of its presentation in the gas apparatus. The change of the flow time can be of different nature. To achieve a technical result, it is sufficient to select the part of the flow finished of the gas mixture, i.e., after the process of mixing natural gas and air, and then return the selected part of the back.Two are filled with liquid and connected to a bottom tanks are simply communicating vessels. The obvious opportunity for containers, with one common wall (see below described constructive solution) does not change the facts. The impact on one of the containers of the pressure source or vacuum proizvol function of the piston in the piston pump. Bearing diverse pulsating effect of the pressure source or vacuum form through the use of pulsators different types (see S. M. Karpachova, B. E. grouse. Pulsation equipment in chemical technology. - M.: Chemistry, 1983, page 14-23).Schematically, the design of the gas burner unit of the present invention shown in the drawing.Gas burner unit contains a gas burner 1 having a housing 2. In this embodiment used the burner with forced air supply. The burner 1 is connected with the inlet gas pipe 3 and the inlet air pipe 4. In case the burner is installed swirl 5. The burner housing 2 provided with a device for sampling and reverse the supply of the combustible mixture 6 with transfer tube 7. Device for selection of the combustible mixture 6 in this embodiment is made in the form located on the frame 2 ring hollow tide, in which case 2 is provided with perforations. Device for selection of the combustible mixture located along the gas after the swirler 5, i.e. after the point of introduction of natural gas into the air stream. Gas burner unit is also equipped with two tanks 8 and 9. In the lower part of the vessel 8 and 9 are connected between the om 10. In this embodiment shows a pneumatic pulsator, representing spool-distribution mechanism. The pulsator 10 has a body 11, a valve 12 with a hole (slot) 13, a feed pipe 14 and the exhaust tube 15. The spool 12 is placed on the rotating shaft 16. The tank 8 is connected through a transporting pipe 7 with a device for sampling and reverse the supply of the combustible mixture 6. The pulsator 10 is connected through a feed pipe 14 with a source of pressure or vacuum (not shown).Gas-burning unit operates as follows.In the burner 1 via line 4 serves required for combustion air. On line 3 simultaneously serves combusted natural gas. By means of devices known type cost of air and natural gas stable. Gas-air mixture of high quality, provided by intensive mixing of the flows receive after passing the flow of gas and air swirler 5. The pulsator 10 is connected with a source of vacuum through pipe 14. When the rotation is accommodated in the housing 11 of pulsator 10 of the shaft 16 and the rotation of the setting shaft 16 of the spool 12 of the disc type having a hole (slot) 13. When combining the FEA is carried out, as the liquid column in the vessel 8 is lowered. When lowering of the liquid column is the selection of final gas mixture from the burner housing through the device for selection of the combustible mixture 6. The gas mixture through the perforations in the casing 2 of the burner 1 is supplied into the cavity ring tide device 6 and further along the conveying pipe 7 into the container 8. When combining holes (slits) 13 of the valve 12 with the exhaust pipe 15 connected with the surrounding space, the container 9 is again under atmospheric pressure. Is the lowering of the liquid column in the tank 9 and, respectively, the rise of the liquid column in the vessel 8. The gas mixture from the vessel through the transport pipe 7 and the device 6 that performs at this time, the function of the device to reverse the supply of the combustible mixture enters the burner 1. Then the cycle repeats. Thus, when a stable air-fuel mixture is throbbing its submission to burning.Description of construction of a gas-burning unit and its work should make the following observations. Device for sampling and reverse feed gas mixture may be performed in various ways until the introduction of simple burner housing pipe. Characteristic types).In the above example, as mentioned previously, used pneumatic pulsator with spool-distributing mechanism. With proper selection of the size and shape of the slots in the spool ripple can be sinusoidal or sawtooth character. The frequency of the pulses depends on the number of revolutions of the spool.It is advisable to give an example of the operation of the gas burner unit for explaining held in this case processes. At a thermal power boiler, for example, 1.2 MW for combustion flows of 120.7 nm3/h natural gas medium composition. When the air excess factor =1,035 formed 1308 nm3per hour (363 liters per second) of the gas mixture supplied to the combustion. Put that design and the number of revolutions of the spool provides a uniform selection of 40 liters of a gas mixture within 0.8 seconds and reverse the flow in the burner for 0.2 C. Therefore, in the course of 0.8 with an average flow rate of the gas mixture into the combustion is (363 - 40/0,8)= 313 l/s (1127 nm3/hour). In the subsequent 0.2 with the flow of the gas mixture for combustion in average (363 +40/0,2)=563 l/s (2027 nm3/hour). Obvious pulsating nature of the burning torch. When choosing different shapes and sizes of the slots of the coil may naptime with turbulization of the flow of flue gases in the volume of the gas space of the boiler. According to preliminary experiments, there was an increase of the coefficient of heat transfer from flue gas to the heat transfer surfaces of the boiler by 15-20%.Thus, the main technical and economic effect of the use of this technical solution is to increase the intensity of work of the gas apparatus. Gas burner unit containing gas burner housing and pipelines for the supply of air and natural gas, characterized in that the block has associated with the source of pressure or vacuum pulsator and two filled with liquid and connected to a bottom of the tank and the burner is equipped located along the gas after the point of its introduction into the air stream by the device for selection and reverse feed gas mixture with transporting it by pipeline, with the upper portion of one container is connected with the pulsator, and the upper part of the other with the conveying pipeline.
FIELD: methods for burning of solid fuel.
SUBSTANCE: the method for salvaging of trinitrotoluene, whose term of safe storage has expired consists in the fact that trinitrotoluene is fed to the combustion chamber in a melted state (at a temperature of 80 to 90 C) and burnt off in the atmosphere of gaseous fuel-methane not containing oxygen in its composition, as a result of burning due to own oxygen of trinitrotoluene, a great amount of own carbon (soot) is extracted, which then finds industrial application. For burning of trinitrotoluene use is made of an installation including a combustion chamber, pressure regulators for delivery of molten trinitrotoluene and gaseous fuel (methane), electric igniter and a filter for catching soot.
EFFECT: provided safe method for salvaging of trinitrotoluene in the combustion chamber in the atmosphere of gaseous fuel (methane).
2 cl, 1 dwg
FIELD: combustion apparatus for fluent fuels.
SUBSTANCE: method comprises supplying gas to be burnt out from the head of the burner of the torch plant in the combustion zone. The composition of gases is variable. The gas flow rate varies from 1m/s to 3.5 of sound speed due to generating excess static pressure of gas from 0.00001 MPa/cm2 to 3.0 MPa/cm2 by the movable control device. The gas jet is turbulent with a cone angle from 2o to 155o.
EFFECT: enhanced efficiency.
FIELD: combustion apparatus using fluent fuel.
SUBSTANCE: burner comprises casing made of a scroll, hollow shaft for fuel supply arranged inside the casing, sucking and exhausting branch pipes for air secured to the casing, nozzle mounted in the conical sleeve, diffuser, and drive. The shaft is mounted for rotation and provided with blades of the fan. The nozzle and conical sleeve are secured to the hollow shaft. The drive is secured to the casing inside the sucking branch pipe. The branch pipe is mounted with a space relation to the casing to provide a space for air flow. The shaft of the drive is hollow to provide fuel flow to the nozzle. The shaft of the drive and hollow shaft of the burner are axially aligned and interconnected. The drive shaft is provided with emulsifier for generating emulsion or suspension and supplying fuel and/or water emulsion and cock for fuel supply.
EFFECT: enhanced efficiency.
2 cl, 1 dwg
FIELD: methods of combustion of hydrocarbon fuels.
SUBSTANCE: the invention is dealt with the method of combustion of a hydrocarbon fuel in a burner. The method of combustion of hydrocarbon fuel in a burner provides, that along the burner external surface a non-corroding technical atmosphere is set in motion, chosen from a group including steam, CO 2 , nitrogen or their mixture. In the capacity of the non-corroding technical aerosphere they use steam. Combustion is carried out at the presence of steam. At least a part of the non-corroding aerosphere is added to the hydrocarbon fuel. The non-corroding aerosphere is used in an amount sufficient to dilute or replace a corroding technical aerosphere existing around the external surface of the burner. The invention allows to avoid a corrosive spraying of the metal and carbonization of the industrial burners exposed to action of the corroding technical aerosphere.
EFFECT: the invention allows to prevent a corrosive spraying of the metal and carbonization of the industrial burners.
5 cl, 1 dwg
FIELD: methods of burning pulverized fuel.
SUBSTANCE: proposed method includes preparation of fuel for burning, delivery of fuel, transportation of high-pressure air, mixing air with pulverized fuel and delivery of high-concentrated aeromixture to boiler burners. Transporting air is ozonized before mixing it with pulverized fuel ; part of ozonized fuel is delivered to transport of pulverized fuel and remaining part is delivered autonomous passage of burner to flame root via pipe line.
EFFECT: steady ignition of pulverized fuel; enhanced efficiency of burning process.
FIELD: methods of burning hydrocarbon fuel.
SUBSTANCE: proposed method of combustion of hydrocarbon fuel includes separate delivery of fuel and air to burner; fuel is delivered mainly to central area of air flow and is burnt over periphery of flame at excess air mode and at excess of fuel in central area of flame; vapor is fed to central area of flame and field of acoustic oscillations is applied. Burner proposed for burning the gaseous hydrocarbon fuel includes air box, hollow gas manifold with outlet gas holes; it is coaxially arranged inside vapor swirler manifold made in form of hollow cylindrical body with profiled passages and mounted in cylindrical body at radial clearance; cylindrical body has nozzle hole; one end face of vapor swirler is blanked-off and opposite end face is smoothly engageable with nozzle hole in body. Burner for combustion of liquid hydrocarbon fuel includes air box and injector mounted on fuel swirler and vapor swirler which are mounted in cylindrical body at radial clearance; said cylindrical body is provided with nozzle unit made in form of hollow detachable cap with holes over spherical end face; mounted at spaced relation inside this cap is cap of smaller diameter and similar in shape; smaller cap has holes which are coaxial to outer cap; outer cap is provided with additional holes; inner cap is not provided with such holes.
EFFECT: reduction of nitrogen oxide emissions by power-generating boilers at enhanced combustion of fuel.
5 cl, 5 dwg
FIELD: fuel burning devices.
SUBSTANCE: proposed ejection burner has body with branch pipes for delivery of combustion components, stabilizer, purging ports and injector additionally provided with mixing ejector consisting of body, contraction passage, fuel and oxidizer supply pipe unions; its construction makes it possible to regulate sectional areas of ejecting and ejected flows due to change of penetration of oxidized supply pipe union into contraction passage of ejector. Widening of flow of fuel-and-gas mixture in injector is made in two sections at different taper angles; diameter of spherical cover exceeds diameter of flow section of injector. Purging ports are made in form of three-stage system; first-stage purging ports are made in form of holes in burner body; second-stage purging ports are made in form of row of holes in combustion chamber; their flow sections change by means of regulating ring moved over surface of combustion chamber; third-stage purging port is made in form of coaxial circular passage copying the combustion chamber geometry. Stabilizer tube is twisted in form of cylindrical spiral. Proposed burner makes it possible to improve quality of mixing and evaporability of fuel in injector and to obtain complete combustion of fuel at extended range of stable operation by excess air coefficient.
EFFECT: enhanced efficiency; enhanced stability of combustion.
FIELD: burning separated oil-containing wastes formed during operation of ships.
SUBSTANCE: proposed incinerator burner includes several injectors for delivery of oil and diesel fuel wastes sprayed by air. Air injector equipped with swirler is located in front of oil and diesel fuel waste injectors; oil waste injector is located closer and distance of both fuel injectors may be changed relative to air injector whose axis lies at right angle relative to axes of fuel injectors; mounted in front of fuel injectors are jets whose orifices have diameter lesser than that of injectors.
EFFECT: enhanced efficiency of burning fuel; reduction of toxic emissions from reactor.
FIELD: mode of incineration of hydrocarbon fuel and an arrangement for its realization refers to engines and power engineering with working processes including preliminary processing of fuel.
SUBSTANCE: the invention may be applied for incineration of fuel as in a periodic regime which is characteristic for reciprocating motors of internal combustion so as for fulfillment of streaming regimes of incineration of fuel, for example, in jet, turbojet, gas turbine engines and power installations. The mode realizes induced destruction of molecules of metastable intermediate products of incomplete oxidation of hydrocarbons, accumulated in gas volume of fuel-airy mixture, by way of power impact leading to explosive three-dimensional spontaneous combustion of gas mixture. Peculiarity of the mode consists in that fuel-airy mixture is enriched with free electrons and power impact on molecules of the mixture for excitation of oscillatory degrees of freedom of molecules is fulfilled by means of their inelastic concussion with free electrons, speeded up by electric field, which tension E is less than tension of switching to independent gas discharge. Enrichment of fuel-airy mixture with free electrons is fulfilled by way of its ionization or by way of injection of electrons. The installation for realization of this mode has a combustion chamber with a source of power impact. The source of power impact consists of a unit of enrichment of fuel-airy mixture with free electrons and a source of a speeded up electric power which includes a system of electrons with controlled multiplexer switch connected to the sources of high-voltage tension. The invention allows to realize in a necessary moment of time momentary development of three-dimensional radical explosion in fuel-airy mixture due to simultaneous destruction of the majority of accumulated metastable molecules of intermediate products. Destruction of molecules of intermediate products generates a great number of active radicals and particles dividing and creating new circuits of reaction of oxidation of hydrocarbon and leads to development of chain-radical explosion.
EFFECT: high effectiveness of incineration mode.
21 cl, 7 dwg