838results about "Burners" patented technology

The invention provides a combustion control method and system for an ammonia-coal dual-fuel mixed boiler, and belongs to the field of combustion control of ammonia-coal mixed combustion. The combustion control method for the ammonia-coal dual-fuel mixing boiler comprises the following steps that S1, boiler operation parameters in the ammonia-coal dual-fuel mixing process are generated according to the boiler load and the ammonia mixing proportion requirement in the ammonia-coal dual-fuel mixing process; the boiler operation parameters comprise an ammonia feeding amount set value and a coal feeding amount set value. According to the invention, the fuel quantity, the air quantity and the pollutant discharge in the ammonia-coal dual-fuel blending combustion can be automatically adjusted and controlled, the combustion efficiency is improved, the low pollutant discharge is realized, and the blending combustion automation level is improved.

A gas turbine engine, comprising a compressor section, combustion section, and turbine section in serial flow arrangement, with the combustion section comprising: a combustor liner at least partially defining a combustion chamber; a wall coupled to the combustor liner; a first fuel supply to supply a first fuel; a gaseous fuel supply to supply a gaseous hydrogen fuel; and a fuel nozzle assembly coupled to the wall and fluidly coupled to the first fuel supply and the gaseous hydrogen fuel supply, the fuel nozzle assembly comprising: a main mixer; and a fuel nozzle comprising an outer wall defining a pilot channel and an outer wall fuel orifice to emit at least one of the first fuel or the gaseous fuel radially outward into the main mixer; and a secondary mixer disposed in the pilot channel.

A fuel spray nozzle includes a fuel circuit having in series a gallery, circumferentially spaced passages arranged in a row around the nozzle, and an annular spin chamber. Each passage has an inlet for receiving a respective portion of the fuel from the gallery and a metering orifice for discharging its portion of the fuel. The passages are configured such that, when the flow of liquid fuel to the inlet port is shut off, a respective differential static pressure develops across stagnant liquid fuel remaining between the inlet and the metering orifice of each passage, and the passages are further configured such that one or more selected passages develop a different differential static pressure to the remaining passages causing a flow of purging air to enter the gallery from the combustor through the selected passages and exit through the remaining passages, thereby purging the gallery and the passages of fuel.

The present invention discloses a coaxial staged burner for a low-pollution combustion chamber of a gas-liquid dual-fuel gas turbine, which relates to the technical field of gas turbine combustion chambers and solves the problem that existing coaxial staged burners are difficult to achieve stable combustion using a single liquid or gas fuel under any load working conditions. The coaxial staged burner comprises: a mounting flange, a main fuel sleeve and a swirler; a fuel supply interface is provided on the mounting flange; four-stage fuel sleeves are coaxially nested in the main fuel sleeve; the swirler consists of a central duty class, a first-stage premixing stage, a second-stage premixing stage, a first-stage hub and a second-stage hub; when liquid fuel works alone, the fuel enters the swirl channel through the duty class liquid fuel nozzle and the second-stage blade liquid fuel hole to achieve premixing and evaporation processes; when gas fuel works alone, the fuel enters the swirl channel through the first-stage blade fuel hole and the second-stage blade gas fuel hole to be mixed.

A fuel nozzle for a turbine engine. The fuel nozzle has a premixer body, vortex generator, air injection orifice, and fuel injection orifice. The premixer body defines a primary flow path. The air injection orifice is provided in the premixer body and located downstream of the vortex generator. The fuel injection orifice is provided in the premixer body and opens into the primary flow path.

The utility model provides a nozzle which comprises a first pipe body, a second pipe body, a third pipe body, a spray head assembly and an end cover. An air inlet and a material return opening are formed in the side wall of the first pipe body; a feeding hole and a temperature sensor mounting hole are formed in the side wall of the second pipe body; the nozzle assembly comprises a nozzle outer sleeve and a nozzle inner core, a nozzle cavity is formed in the nozzle outer sleeve, the nozzle inner core is located in the nozzle cavity, a nozzle hole penetrating through the two ends is formed in the center of the nozzle outer sleeve, a plurality of air grooves from the edge to the middle are formed in the end face, away from the third pipe body, of the nozzle outer sleeve, and a nozzle hole penetrating through the two ends is formed in the middle of the nozzle inner core. An end cover hole which penetrates through the two ends and corresponds to the spray hole is formed in the center of the end cover. When the nozzle is blocked, the nozzle assembly can be cleaned only by screwing off the end cover and then screwing off the nozzle assembly, time and labor are saved, efficiency is high, strength is low, and maintenance is easy and convenient.

The utility model discloses a special fuel oil and air mixing structure for a burner, which relates to the field of burner accessories and comprises an air inlet bin, two ends of the air inlet bin are respectively connected with an air inlet and a transmission bin, the outer side of the transmission bin is connected with a mixing bin and an air outlet, and a motor is mounted in the transmission bin. The output end of the motor is connected with air inlet fan blades and diffusion fan blades, the air inlet fan blades are located in the air inlet bin, the diffusion fan blades are located in the mixing bin, an oil inlet pipe is installed on the outer side of the mixing bin and extends into the mixing bin to be aligned with the diffusion fan blades, and a fixing steel ring is installed on the inner wall of the mixing bin. By means of the sealing plate and the fixing steel ring, when the combustor is not used any more, the sealing plate is pulled by the return spring to be tightly attached to the fixing steel ring, and the edge of the sealing plate is sealed through the inclined sleeve, so that mixed fuel in the mixing bin cannot be discharged from the transmission bin, and fuel leakage is reduced.

The invention belongs to the field of boiler waste heat utilization, and particularly discloses an alcohol-hydrogen fuel mixed combustion system utilizing boiler waste heat, which comprises a methanol cracker unit, a methanol supply unit, a methanol cracked gas supply unit, an alcohol-hydrogen burner unit and a smoke exhaust steam supply unit, the methanol cracker unit comprises a methanol cracker, a methanol inlet pipe, a cracked gas outlet pipe, a smoke exhaust inlet flange, a smoke exhaust outlet flange, a methanol shell side area and a smoke exhaust pipe side area, a plurality of heat exchange pipes are uniformly distributed in the smoke exhaust pipe side area, and the methanol inlet pipe is used for connecting the methanol supply unit and the methanol shell side area; the exhaust smoke inlet flange is used for connecting the methanol cracker unit and the exhaust smoke steam supply unit, and the methanol supply unit and the methanol cracked gas supply unit are both used for connecting the methanol hydrogen burner unit and the methanol cracker unit. By means of the self-designed methanol cracker combustion loop, liquid methanol and methanol cracking gas can be combusted at the same time, and the energy utilization rate is greatly increased.

A fuel nozzle (106) for a turbine engine. The fuel nozzle (106) has a premixer body (108), vortex generator (118), air injection orifice (146), and fuel injection orifice (134). The premixer body (108) defines a primary flow path (110). The air injection orifice (146) is provided in the premixer body (108) and located downstream of the vortex generator (118). The fuel injection orifice (134) is provided in the premixer body (108) and opens into the primary flow path (110).

The present invention relates to the technical field of automobile parts. Disclosed is a self-dedusting multi-ignition-point co-heating fuel oil heater, comprising a combustion chamber, wherein the outer side face of the combustion chamber is provided with several first air inlets that penetrate from the inside to the outside; an ignition plate is fixedly provided on the combustion chamber close to an air inlet end, a volatilization chamber is provided in the ignition plate, a feeding pipe being connected to one side of the volatilization chamber, and an igniter is further provided in the ignition plate; and the end face of the ignition plate is provided with several second air inlets in communication with the interior of the combustion chamber, the second air inlets being arranged in an array around the circumference of the combustion chamber, and the air inlet side of the ignition plate being movably provided with movable pins that can be inserted into the second air inlets to clean the second air inlets. The present invention aims to solve the problems of the failure of ignition function and flame-out during combustion in heaters in dusty environments, so as to delay the formation of carbides in the combustion chamber and ameliorate the low fuel heat conversion efficiency.

The vaporizing combustion head belongs to the components of liquid fuel combustion equipment. It includes a combustion cylinder, and a sleeve is sleeved outside the combustion cylinder. Both ends of the sleeve are hermetically and fixedly connected to the opposite ends on the combustion cylinder. An annular gas-liquid chamber is provided between the combustion cylinder and the sleeve. A liquid injection pipe is connected to the lower part at the rear end of the gas-liquid chamber, and a gas-liquid outlet pipe is connected to the upper part at the front end of the gas-liquid chamber. A jet pipe is provided at the central part inside the combustion cylinder. The front end of the jet pipe is connected to the gas-liquid outlet pipe, and a nozzle is installed at the rear end. A plurality of spray holes are evenly distributed along the circumference of the nozzle. A plurality of heat absorption plates are evenly distributed along the circumference of the jet pipe. One end of each heat absorption plate faces the jet pipe and there is a gap between it and the jet pipe, and the other end is fixedly connected to the inner wall of the combustion cylinder. This vaporizing combustion head can increase the combustion temperature of clean fuel, improve the utilization rate of clean fuel, reduce the heat dissipation of clean fuel, and has remarkable energy-saving and environmental protection effects.

The invention discloses a gas furnace fly ash co-processing method and system, and belongs to the technical field of solid waste disposal. The method comprises the following steps: S1, grinding raw coal and water to obtain coal water slurry; s2, mixing the coal water slurry and the fly ash to obtain mixed slurry; wherein the water content of the mixed slurry does not exceed 55%, and the wet basis heat value is greater than 2800kcal / kg, so that the mixed slurry can realize self-sustaining combustion after being fed into the furnace; s3, the mixed slurry enters a hearth to be combusted; and S4, high-temperature flue gas generated by combustion enters the next procedure for heat exchange. According to the fly ash co-processing method, on one hand, heat generated by combustion of the coal water slurry can be utilized for heat tracing of the fly ash, so that combustion of the fly ash is achieved, and extra energy consumption is not needed; and on the other hand, the fine fly ash and the coal water slurry are mixed to obtain slurry with certain viscosity, so that the fine fly ash can be effectively prevented from being carried by the airflow and quickly passing through the hearth, the retention time of the fly ash in the hearth is prolonged, and the fly ash is combusted more sufficiently.

A flame producing assembly including a pocket lighter and a sub-unit assembly including an extended wand, a rigid support and an helical spring, the pocket lighter being connected to the sub-unit assembly, the pocket lighter comprising a piezoelectric ignition device, the rigid support being located inside the extended wand, the rigid support having an longitudinal inner opening, the extended wand being electrically coupled to the piezoelectric ignition device, wherein the pocket lighter is connected directly to the sub-unit assembly and wherein the helical spring extends along the longitudinal inner opening.

A method of making a fluid injector for a gas turbine engine includes depositing material (104) onto a piece of tube stock (102). The method includes machining the deposited material into a fluid injector component (106). Depositing can include laser cladding the material onto the piece of tube stock. The method can include placing or flowing braze into a braze joint location (116) between the deposited material and another fluid injector component and forming the braze into a braze joint in the braze joint location.

This utility model relates to the field of stove technology, specifically a stove core structure, including an inner tube and an outer tube. The inner tube is open at the bottom and closed at the top, while the outer tube is closed at the bottom and open at the top. The space between the inner and outer tubes forms a combustion chamber. Several air inlet pipes are evenly arranged around the circumference of the outer tube at its lower part. Ventilation openings are also provided at the lower and upper parts of the outer tube. Several evenly arranged ventilation openings are provided on the wall of the inner tube. This utility model replaces ventilation openings with evenly distributed air inlet pipes at the lower part of the outer tube. On the one hand, this prevents the combustion flame at the bottom of the combustion chamber from escaping through the ventilation openings at the lower part of the outer tube. On the other hand, the air inlet pipes guide air into the bottom of the combustion chamber more orderly, providing a sufficient and stable oxygen supply for fuel combustion at the bottom. This solves the technical problems of existing stove core structures easily causing flame escape during combustion and fuel waste due to incomplete combustion within the combustion chamber.

The present disclosure relates to a device for heating a medium, including a burner unit and a flame tube, wherein the burner unit generates flue gas, wherein the flame tube has a flue gas inlet, a longitudinal axis, a casing extending along the longitudinal axis, and an end face opposite the flue gas inlet, wherein the flue gas passes from the burner unit into the flame tube via the flue gas inlet, wherein a plurality of recesses are located in the casing, and wherein the recesses have different dimensions and / or are distributed asymmetrically on the casing. The longitudinal axis is in a central plane, wherein a first side and a second side of the casing are formed by the central plane, and wherein recesses on the first side have smaller dimensions than recesses on the second side.

The invention discloses an outer-thick inner-thin pulverized coal center ammonia-mixed low-nitrogen burner, relates to the technical field of burners, and solves the problems of non-flammable ammonia and high NOx emission concentration in ammonia-doped combustion of a pulverized coal boiler. The device comprises a primary air pipeline, a secondary air ring cavity, a bluff body and a central ammonia gas pipe, the central ammonia gas pipe is slidably arranged on the primary air pipeline, the gas outlet end is arranged in the center in the primary air pipeline, and the gas inlet end is arranged outside the primary air pipeline; an air distribution disc is arranged at the gas outlet end of the central ammonia gas pipe, and a telescopic mechanism and an ammonia gas adjusting valve are arranged at the gas inlet end; a plurality of bluff bodies are arranged on the central ammonia gas pipe, and the sections of the bluff bodies are trapezoidal; a Venturi tube is arranged in the primary air pipeline, a combustion stabilizing ring is arranged at the air outlet end, and a secondary air ring cavity is coaxially formed in the outer side of the primary air pipeline. The ammonia gas is directly utilized in the form of fuel, meanwhile, the pulverized coal is combusted together with the ammonia in the mode that the pulverized coal is thick outside and light inside, so that the combustion state is stabilized, the burn-off rate of the ammonia gas is high, and the emission concentration of NOx in the combustion process is low.

The present invention provides a fuel atomizing nozzle (1) for handling at least two fuels and an atomizing fluid, the fuel atomizing nozzle (1) comprising a solid body (10) having a mainly cylindrical shape around a longitudinal axis (X) defining a first end (11), a second end (12) and a contour surface (16) extending there between connecting the two ends (11, 12), wherein the first end (11) comprises at least one outlet (17), wherein the fuel atomizing nozzle (1) further comprises a fluid compartment (14) being arranged centrally around the longitudinal axis (X) in the solid body (10), at least a first and a second fuel compartment (15a, 15b) being arranged in a radial plane between the fluid compartment (14) and the contour surface (16), the fuel compartments (15a, 15b) having an annular shape, the at least first and second fuel compartments (15a, 15b) being connected to a pre-filling chamber (35) by at least a first and a second fuel channel (25a, 25b), respectively, at least one mixing chamber (40) being arranged between the fluid compartment (14) and the at least one outlet (17), and a fluid channel (24) connecting the at least one mixing chamber (40) and the fluid compartment (14), wherein the pre-filling chamber (35) has an annular shape, and the pre-filling chamber (35) is connected via a pre-filling channel (45) to the at least one mixing chamber (40).

The application provides a boiler combustion control method and system for ammonia-coal dual fuel blending, and belongs to the field of ammonia-coal mixed combustion control. The boiler combustion control method for ammonia-coal dual fuel blending comprises the following steps: S1: generating a boiler operation parameter in an ammonia-coal dual fuel blending process according to a boiler load and an ammonia blending ratio requirement during ammonia-coal dual fuel blending; the boiler operation parameter comprises an ammonia supply amount set value and a coal supply amount set value. The application can realize automatic adjustment control of fuel quantity, air quantity and pollutant emission in ammonia-coal dual fuel blending combustion, improve combustion efficiency, realize low pollutant emission, and improve the automatic blending level.

A burner assembly (1) for a mobile fuel-operated heater, in particular for a vehicle, comprises an evaporator (20) configured to evaporate a fuel supplied to it, an evaporator receptacle (24) designed to receive the evaporator (20), a peripheral wall (16) defining a combustion chamber (14) in which a gas mixture containing the evaporated fuel can be combusted, wherein the peripheral wall (16) defines a central axis (M), a glow plug (10) with a shaft section (12) comprising a glow element, which is configured to convert a current flowing through it when a voltage is applied into heat for igniting the gas mixture, and a first opening (15) formed in the peripheral wall (16) of the combustion chamber (14) and through which the shaft section (12) of the glow plug (10) extends substantially radially into the combustion chamber (14).A mounting arrangement (44, 45, 46, 17, 8) for the glow plug (10) is configured to allow the shaft portion (12) of the glow plug (10) to pivot within the combustion chamber (14) in a direction (R) along the center axis (M) away from the evaporator (20). A corresponding insert component with an integrally formed retaining ring for the evaporator is also provided.

The invention discloses a hydrogen and pulverized coal mixed combustion device and a using method thereof, and relates to the technical field of combustion equipment.The hydrogen and pulverized coal mixed combustion device comprises a combustion furnace, a mixing unit, a first conveying pipeline and a second conveying pipeline, and the mixing unit mixes first gas and hydrogen into hydrogen mixed gas; the first conveying pipeline is communicated between the combustion furnace and the mixing unit; the second conveying pipeline surrounds the peripheral side of the first conveying pipeline and is suitable for conveying the pulverized coal into the combustion furnace, and the hydrogen mixed gas and the pulverized coal are suitable for being combusted in the combustion furnace. According to the combustion device for mixed combustion of the hydrogen and the pulverized coal, the first gas is adopted in the mixing unit to dilute the hydrogen to form the hydrogen mixed gas, the hydrogen mixed gas and the pulverized coal enter the combustion furnace at the same time, and when the hydrogen mixed gas and the pulverized coal in the combustion furnace are subjected to cooperative combustion, the risk of backfire is effectively eliminated, the combustion rate is regulated and controlled, and the combustion efficiency is improved. And therefore, safe and stable cooperative combustion of the hydrogen and the pulverized coal in the combustion furnace is realized.

The invention discloses a multi-axis servo regulation and control liquid ammonia burner based on smoke backflow liquid ammonia vaporization and a control method, and relates to the field of clean energy equipment, the multi-axis servo regulation and control liquid ammonia burner comprises a liquid ammonia burner body, an annular liquid ammonia flow servo regulation mechanism, an annular liquid ammonia conveying and distributing mechanism, a liquid ammonia plasma ignition device, an ammonia combustion flame scanning mechanism and the like. The multi-axis servo motor drives the execution valves to adjust the flow ratio of liquid ammonia fuel to hot air in the fluid channels, meanwhile, liquid ammonia is vaporized through heat exchange of backflow smoke in the boiler and then fully premixed with the hot air to enter the boiler to be combusted, and efficient combustion of the ammonia fuel of the coal-fired boiler is achieved. The technical problems of large latent heat of vaporization of liquid ammonia fuel, continuous clean combustion of ammonia fuel, ammonia escape and control of NOX generated by combustion are solved.

The invention relates to the technical field of industrial combustion equipment, in particular to a top combustion heavy oil burner and a combustion method.The top combustion heavy oil burner comprises a burner shell, a center oil gun and a multi-stage air distribution structure, the multi-stage air distribution structure is coaxially sleeved from inside to outside, and a center air pipe with a cyclone at an outlet is used for providing center rotational flow air for stable combustion; an outlet of the combustion-supporting air pipe is a direct-flow air channel, and the combustion-supporting air pipe is used for providing combustion-supporting air and controlling flame forms; an outlet of the cooling air pipe faces the inner wall of the shell, and the cooling air pipe is used for forming a cooling air curtain to protect the burner body. By means of the multistage air distribution design, efficient and stable combustion and low pollutant emission of heavy oil are achieved, the service life of the combustor in the high-temperature environment is greatly prolonged through a unique cooling structure, and the combustor is particularly suitable for top combustion type heating of an industrial boiler.

The present invention relates to an outdoor camping fuel oil heating apparatus, comprising an oil tank and a cylindrical structure, where the cylindrical structure comprises a housing, a combustion cylinder is disposed in the housing, a rear end of the combustion cylinder is connected with a combustion head assembly, a power storage assembly is further disposed on the housing, several fire retaining rings are uniformly disposed in the combustion cylinder, apertures of the several fire retaining rings are disposed from large to small, and a plurality of combustion through holes distributed in a regular or irregular manner are formed in the fire retaining rings of the front two layers, so that a purpose of improving the combustion efficiency is achieved by blocking a residence time of a flame at each fire retaining ring during combustion.

To suppress generation of NOx while stably burning ammonia.SOLUTION: A fuel supply facility includes: a main ammonia line in which liquid ammonia flows; a vaporizer connected to an end of the main ammonia line and heating and vaporizing the liquid ammonia by exchanging heat between a heating medium and the liquid ammonia; a gas ammonia line connected to the vaporizer and guiding gas ammonia that is ammonia vaporized by the vaporizer to a combustor of a gas turbine as fuel; a liquid ammonia line for guiding the liquid ammonia that has not undergone heat exchange with the heating medium in the vaporizer to the combustor as fuel; and a switching device capable of switching an ammonia supply state between a first state of guiding the gas ammonia from the gas ammonia line to the combustor and a second state of guiding the liquid ammonia from the liquid ammonia line to the combustor.SELECTED DRAWING: Figure 1

Methods and systems for a fuel system are provided. In one example, a method may include adjusting operation of a fuel-fired heater (FOH) and an exhaust system to regenerate the FOH. The operation may include flowing gases from the exhaust system to the FOH to return the FOH to a less coked state.

The invention provides a secondary vaporization type furnace end which comprises a vaporization assembly, and the vaporization assembly comprises a first oil pipe, an oil pipe connector, a throttling valve, a secondary vaporization heating pipe, a secondary vaporization chamber, a second oil pipe, an oil nozzle connector and a vaporization oil nozzle. And the oil pipe joint is mounted at one end of the first oil pipe. Fuel oil in the first oil pipe is vaporized through the primary vaporization heating pipe, the primarily vaporized fuel oil flows into the second oil pipe, the fuel oil in the second oil pipe is secondarily vaporized through the secondary vaporization heating pipe, and due to the fact that the secondary vaporization heating pipe is bent into a continuous S shape, the heating area of the second oil pipe can be increased; fuel crude oil in the second oil pipe is fully vaporized, and the combustion efficiency of fuel oil is improved; by rotating the throttling valve, the sectional area of an inner channel of the throttling valve can be changed, then the flow of fuel crude oil is adjusted, and when the flow of the fuel crude oil is increased, the combustion firepower is increased, and rapid and accurate adjustment of the combustion firepower is achieved.

The ammonia co-firing boiler (1) as a boiler comprises: a burner (20) supplied with at least one of a first fuel (F1) and ammonia fuel (F2) and combustion air (A1); a regulating damper (304); a combustion state detection unit (44) that distinguishes between the co-firing of the first fuel and ammonia fuel (F2) and the combustion of the first fuel (F1); and a control unit (40) comprising a combustion control unit that controls the exhaust gas oxygen concentration to a first oxygen concentration when the combustion state detection unit (44) detects that the first fuel (F1) is being burned separately, and controls the exhaust gas oxygen concentration to a second oxygen concentration lower than the first oxygen concentration when the combustion state detection unit (44) detects that the first fuel (F1) and ammonia fuel (F2) are being burned together.