43 results about "Combustor" patented technology

The invention discloses a non-road diesel engine combustor DPF regeneration temperature control method. According to the method, control over the regeneration temperature of a non-road diesel engine combustor DPF is completed by combining feedforward control and PID feedback control. The method has the advantages that closed-loop control is stable and feedforward control is fast. The control precision of the regeneration temperature of a DPF catalytic converter is improved. Under various diesel engine working conditions, the error of the actual temperature of an inlet of the DPF catalytic converter and the DPF target regeneration temperature can be controlled within 25 DEG C. Accordingly, a DPF system can conduct reliable regeneration temperature management under various working conditions.

The present invention discloses a novel apparatus and way for controlling combustion dynamics in a premix combustion system. The apparatus comprises a hemispherical dome assembly with a plurality of dome dampers having a predetermined damper volume and air supply with the damper in fluid communication with the combustion chamber. The dome dampers are pressurized with a volume of air to dampen pressure waves received from the combustion chamber. One or more combustor frequencies can be targeted through use of the present invention.

A method of operating a furnace having process tubes and multiple burners where it is desired to conform the temperatures of the process tubes to selected target temperature criterion. The present method provides a systematic and quantitative approach to determine how to adjust burner flow rates to result in desired tube wall temperatures, for example to minimize the temperature deviation between tube wall temperatures at a predetermined elevation in the furnace.

The invention relates to a device for testing a contamination characteristic of a segmental temperature control coal burning boiler. The device comprises a hearth and a flue, wherein the lower end of the hearth is connected with a combustor for spraying coal powder and an opposed air pipeline; the combustor is connected with a primary air inlet pipeline and a secondary air inlet pipeline respectively; the primary air inlet pipeline and the secondary air inlet pipeline as well as the opposed air pipeline are communicated with an air blower respectively; a heat preservation layer is arranged on the outer side of the hearth; a plurality of electric heating elements are arranged on the wall of the hearth in a segmental manner; segmental cooling clamping sleeves are arranged outside the flue; the tail of the flue is connected with a heat exchanger; and a plurality of test holes are formed in the hearth and the flue. The device can simulate various temperature situations of the hearth of the actual boiler, so that the stability and the flexibility of a test system are improved; by adopting segmental electric heating, the hearth can be stabilized at test required temperature; by adopting the segmental cooling clamping sleeves, the smoke temperature in the flue can be precisely controlled in a required range, and environments at different positions of the flue in the actual boiler can be simulated; and the contamination characteristic of the coal powder in different smoke temperature regions is convenient to research.

The invention discloses a reverse flow combustor and a double-wall elbow structure thereof and relates to the field of aero-engines. The double-wall elbow structure comprises an inner elbow wall and an outer elbow wall; in the flowing direction of fuel gas, the inner elbow wall is divided into an upper inner elbow wall section and a lower inner elbow wall section, cooling structures of the two regions are different, the upper inner elbow wall section is provided with multiple rows of diverging holes, besides the fact that certain included angles are formed between the diverging holes and the wall of the upper inner elbow wall section, certain deflection included angles are formed between the diverging holes and the flowing direction of the fuel gas, and compound angles are formed; the lower inner elbow wall section is provided with a plurality of rows of diverging holes, certain included angles are formed between the diverging holes and the wall of the lower inner elbow wall section, and deflection included angles are not formed; and the inner elbow wall is sleeved with the outer elbow wall, a middle cavity is formed between the inner elbow wall and the outer elbow wall, and impactholes are formed in a shell of the outer elbow wall. By means of the elbow structure, the peak wall temperature at the start section of the inner elbow wall and the wall temperature gradient of an elbow can be effectively reduced, and therefore the strength of the elbow is improved, and the service life of the elbow is prolonged.

The invention relates to an upper-air-intake dual-ring combustor which comprises a base, nozzles, a foundation seat and burner caps. The base is embedded on a panel and is internally provided with a fuel gas channel; the nozzles comprise a first nozzle and a second nozzle communicating with the fuel gas channel; the foundation seat is supported on the base and comprises an inner-ring seat body andan outer-ring seat body arranged on the periphery of the inner-ring seat body at an interval; the inner-ring seat body is provided with an inner injection pipe; the outer-ring seat body is provided with an outer injection pipe; the burner caps comprise an inner-ring burner cap and an outer-ring burner cap; the inner-ring burner cap covers the inner-ring seat body in a matching way; an inner-ringgas mixing chamber is formed between the inner-ring burner cap and the inner-ring seat body; the outer-ring burner cap covers the outer-ring seat body in a matching way; an outer-ring gas mixing chamber is formed between the outer-ring burner cap and the outer-ring seat body; a temperature sensing probe stretching out to the upper part of the inner-ring burner cap is arranged in the inner-ring seat body; and a check ring is arranged on the top face of the inner-ring burner cap in an upward extending way along the circumferential direction, and is located on the inner circumference of a fire hole of the inner-ring burner cap. According to the upper-air-intake dual-ring combustor, the influences of flame, smoke and the like on the temperature rise of the temperature sensing probe can be reduced, so that the temperature measurement accuracy and the service life of the temperature sensing probe are improved and prolonged.

The invention provides a cyclone furnace denitration system and method. The cyclone furnace denitration system comprises a cyclone cylinder combustor and a reducing agent storage tank which are connected with the cyclone furnace; an SNCR first nozzle is arranged at the upper part of a hearth of the cyclone furnace, and an SNCR second nozzle is arranged in the top of a hearth flue; the axial direction of the cyclone cylinder combustor is vertically mounted on the outer side wall of the lower part of the hearth of the cyclone furnace, the side wall of the cyclone cylinder combustor is provided with an amino reducing agent first nozzle, and an amino reducing agent second nozzle is arranged on the side wall of the hearth above the cyclone cylinder combustor; a primary air inlet is formed in the axial direction of the cyclone cylinder combustor, and a secondary air inlet is oppositely arranged in the tangential direction of the side wall; the reducing agent storage tank is correspondingly connected with the SNCR first nozzle, the SNCR second nozzle, the amino reducing agent first nozzle and the amino reducing agent second nozzle through a reducing agent conveying pipe. The cyclone furnace denitration system and method has the advantages that the process flow is simple, the storage and conveying equipment of the SNCR denitration reducing agent is fully utilized, a new reducing agentstorage and conveying device does not need to be added, so that a new combined denitration system is formed, and the low emission of NOx of the cyclone furnace is realized.

A home appliance with a cooktop and an oven cavity. A gas-operable burner for heating the cavity to a cooking temperature and including a gas mixing pipe is mounted to the appliance with a bracket and has an inlet for intake of gas and air for combustion, the gas mixing pipe being mounted to the appliance with a bracket. A ventilation channel extends through the appliance body. A fan is in fluid communication with the ventilation channel for creating an airstream within the ventilation channel. An air conduit extends between the ventilation channel and the gas mixing pipe, with an air conduit inlet in the airstream and an air conduit outlet adjacent the gas mixing pipe to direct air from the airstream to the gas mixing pipe for combustion with the gas and air. An air conduit stabilization apparatus mounts the air conduit to the gas mixing pipe bracket.

Provided in the invention is a steady-state-temperature-field-included simulation test bench of an aero-engine combustor. The simulation test bench comprises a box body, a combustion chamber simulation device, a test device, an air supply system, a ventilation system, a cooling system and a control system. The ventilation system includes an air suction type exhaust hood installed inside the lowerbox body and a wall-mounted industrial ventilation fan installed at the top of the box body. The air supply system and the cooling system are installed inside the lower box body. The control system includes a controller installed inside the lower box body and a human-machine interaction device installed on the outer side of the box body; and the controller is connected with the wall-mounted industrial ventilation fan, the human-machine interaction device, the combustion chamber simulation device, the test device, the air supply system, and the cooling system respectively. The simulation test bench can be used for simulating the actual working condition of the aero-engine combustion chamber; and the enabling performance of the thermal barrier coating material is studied preliminarily beforerun trial examination of the ground track. The steady-state-temperature-field-included simulation test bench has advantages of low cost, short cycle and low risk and the like.

Process and apparatus for melting raw material in an electric arc furnace using a flame of variable direction, the apparatus comprising a burner and a lance whereby the lance outlet opening and the burner outlet opening are not concentric and are located at a distance from one another, and whereby the lance axis forms an angle with the burner axis in the range from 10° to 40.

An ammonia low-nitrogen multi-stage rotational-flow burner comprises an outer air cylinder and an inner air cylinder, a direct-flow air channel is formed between the inner wall of the outer air cylinder and the outer wall of the inner air cylinder, a plurality of main gas pipelines are evenly distributed on the outer wall of the inner air cylinder in the circumferential direction, the inner air cylinder is provided with a rotational-flow air channel, a rotational-flow air channel, a central air channel and a central gas injection channel which are coaxial from outside to inside, and fuel gas is divided into three parts through the central gas injection channel, the rotational-flow air channel and the main gas pipelines. The central air channel, the direct-flow air channel and the rotational-flow air channel divide air into three parts, classification of fuel and air is carried out in the inner air cylinder, in addition, the burner can further comprise a flame segmentation ring arranged at the front end, flame can be segmented, the contact area of gas and air is increased, combustion is more sufficient, the fuel and the air are mixed in a layered mode, and accordingly the gas and air mixing effect can be enhanced. Heat radiation transmission between a component and the surrounding high-temperature environment is slowed down, and the service life of the component is prolonged.

The invention relates to technology of a water-based combustion-supporting straw particle boiler-kiln universal burner with fuels such as coal, gas and oil. Specially-shaped fireproof ribbed bricks are built in a square-tank water-cooling-wall machine body to form a plurality of pairs of two-side square-tank hearth backfire collision hearth structures, two sides of a central hearth are provided with a square-tank hearth, a fire collision hearth, a fire outlet, a special boiler material covering cap system, an extension hopper, a streamline pushing curve, a streamline extension pipe, a burner body and a cooling triangular comb, mixed application of multiple fuels or replacement of a servo fed material can be performed, the air supply coefficient of a boiler adopting water and magnesium steam water-based supported combustion technology to completely or not completely substitute for a traditional air supported combustion technology is far less than 1, and thus the ultra-efficient energy-saving and environment-friendly boiler-kiln universal burner fulfills six purposes of no air consumption, water-based combustion supporting, ultra-efficient energy conservation, no generation of NOx, desulphurization and decomposition and solidification of carbon dioxide under the catalysis of steam of water, magnesium, etc.

The invention relates to a non-metal honeycomb combustion plate for a Chinese food kitchen range. The non-metal honeycomb combustion plate is matched with a premixed combustor, is made by performing extrusion molding and baking on a high-temperature-resistant non-metal material, and has a honeycomb structure; through holes are uniformly distributed at small pore diameters and high density; the surface layer of a plate body is coated with chemical raw materials prepared through a special formula. When mixed gas in a premixed chamber passes through, the mixed gas is remixed to the maximum extent and is contacted with a coating layer on a large area, and the coating layer performs a complete combustion oxidation reaction on fuel gas, so that the mixing degree and heat efficiency of the fuel gas and combustion-boosting air are maximized, and the emission of harmful gas is minimized.

The invention provides a high heating value gas boiler, of which the fuel is high heating value gas. Steam produced by the boiler can be used for power generation, steam supply and heating, so that energy is reasonably utilized. The boiler comprises a firebox, a tail shaft, water walls, overheaters, coal economizers, air preheaters and a horizontal flue, wherein the upper part of the firebox is communicated with that of the tail shaft through the horizontal flue. The boiler is characterized in that the water walls surrounds the firebox; a roof overheater is arranged on the side wall of the tail shaft; a wall enclosure overheater is arranged on the side wall of the horizontal flue; the water walls, the roof overheater and the wall enclosure overheater adopt membrane-type wall structures; at least two burners are arranged on the front wall of the firebox side by side; the lower part of the front water wall on the inner side of the front wall inclines by 5 degrees and extends backwards to the back wall of the firebox to form a boiler bottom water wall; a firebrick layer is arrange above the boiler bottom water wall; and the overheaters comprise a high-temperature overheater, a low-temperature overheater, the roof overheater and the wall enclosure overheater.

The invention discloses a power station boiler balanced combustion optimization method based on data driving, which includes a front-end sensor, a data model, a balanced combustion control center, flow velocity adjusting equipment, combustors and a flow velocity and flow measurement sensor, wherein the front-end sensor is used for detecting parameters reflecting the combustion state in a hearth, the data model analyzes and judges whether deviated combustion and insufficient combustion exist in the hearth or not, the balanced combustion control center receives output of the data model and air powder flow velocity and flow parameters measured by the flow velocity and flow measurement sensor, then analyzes and calculates an adjusting instruction, and sends the adjusting instruction to the flow speed adjusting equipment, and the flow speed adjusting equipment can change the resistance of a primary air pipeline and adjust the air powder flow speed and flow of the corresponding combustor, so that air powder combustion of all the combustors is optimized, sufficient combustion is achieved, and the combustion efficiency is improved. Primary air powder deviation can be adjusted on line under data driving, deviation combustion in the furnace is effectively solved, the combustion efficiency is improved, and coal consumption is reduced.

The invention relates to a tail gas after-treatment assembly. The tail gas after-treatment assembly is used for treating tail gas of a natural gas engine and comprises a tail gas after-treatment package; the tail gas after-treatment package comprises a shell and a catalyst carrier packaged into the shell; the tail gas after-treatment assembly further comprises a natural gas burner mounted on the upstream of the tail gas after-treatment package; and the natural gas burner is used for heating tail gas of the natural gas engine to increase the temperature of the tail gas during flowing through the catalyst carrier. The invention further relates to a system for the natural gas engine. The system for the natural gas engine comprises the natural gas engine and the tail gas after-treatment assembly. Compared with the prior art, the natural gas burner is arranged to heat the tail gas of the natural gas engine so that the catalyst carrier can be quickly heated up at the cold starting stage of the engine, and the converting efficiency of the tail gas is improved.

The invention provides a biomass gasification Stirling power generation system, and belongs to the technical field of Stirling power generation. The biomass gasification Stirling power generation system is characterized in that a biomass gasification system, a Stirling power generation system and waste heat are combined, fuel gas generated by the biomass gasification system is conveyed to the Stirling power generation system through a pressurizing device, the fuel gas and combustion-supporting air are mixed according to a ratio of 1:3 in a combustor, the fuel gas is ignited through the spark plug of the combustor, a Stirling power generator is heated to generate power, high-temperature residual smoke generated by power generation can heat the combustion-supporting air through a heat exchange device and finally enters a waste heat utilization system for heat supply and refrigeration, and generated smoke tail gas is subjected to desulfurization, denitrification and dust removal treatmentthrough a tail gas treatment device and then is discharged after reaching the standard.

The invention discloses a ground torch system. The ground torch system comprises a plurality of ground combustors and an anti-radiation fence; the plurality of ground combustors are arranged in at least two rows, and the number of the ground combustors in each row is at least two; the anti-radiation fence is arranged on the outer sides of the ground combustors in a surrounding mode, wherein the distance between two adjacent rows of ground combustors is at least 6 meters, and the distance between two adjacent rows of ground combustors in each row is at most 2 meters. Therefore, by limiting thedistance between every two adjacent rows of ground combustors and the distance between every two adjacent ground combustors in each row, the positions of the ground combustors can be arranged more reasonably, and when the ground torch system treats large-displacement combustible gas, the ground combustors can receive sufficient air; the phenomena of insufficient combustion, smoking and the like ofthe ground combustors during gas combustion can be avoided, and pollution to the environment is reduced.

The invention discloses a refined infrared stove core for Chinese food. The refined infrared stove core for Chinese food comprises a base plate, an air and gas union pipe and a shell, the shell is installed on the base plate, a refined combustion bin is installed in the shell, refined combustion bin wall outlets are formed in the refined combustion bin which is provided with a refined bin base plate, the air and gas union pipe is installed on the lower surface of the base plate, installation holes are formed in the base plate, the air and gas union pipe is provided with a gas intake cavity, a gas orifice is formed in the gas intake cavity and provided with a gas pipe connection screw and a gas pipe connection nut, a catalyst cover is arranged in the refined combustion bin through a clamping groove, an air mixing bin is arranged in the shell, an electronic igniter is installed in the refined combustion bin, and an igniter shell is installed outside the igniter. The refined infrared stove core for Chinese food has the advantages that the structure is simplified, functions are refined, stability is higher and more reliable, a whole combustor structure is made of antioxidant materials resistant to high temperature, service life is prolonged, higher and more stable practicality is guaranteed, and energy conservation and environmental protection are achieved.

A method for monitoring a combustor comprising: measuring several times a distance between a first wall of the combustor and either a second wall of the combustor or a sensor of the combustor by the sensor, and concluding from a variation in the distances a formation of deposit on the first and/or second wall and/or sensor, and/or a temperature change within the combustor, and/or a pressure change within the combustor.

The invention discloses a direct combustion type hot air penetration internal circulation drying device for non-woven fabric production. The device comprises a machine frame, a drying furnace, a plurality of conveying rollers, a fabric feeding roller set, a non-woven fabric winding device, a hot blast stove, a heat supply pipeline, a natural gas burner, a hot air supply device and an air return pipe, wherein the drying furnace is transversely arranged at the upper end of the machine frame, a drying cavity is formed in the drying furnace, the plurality of conveying rollers are transversely arranged in the drying cavity, and are alternately arranged up and down, and a fabric inlet and a fabric outlet are formed in the two sides of the drying furnace correspondingly. According to the direct combustion type hot air penetration internal circulation drying device for non-woven fabric production, the natural gas burner is arranged to supply heat to the drying furnace, by means of hot air penetration drying, the hot air is enabled to directly transfer heat to a spunlace fiber mesh for water evaporation through the suction action of a main fan, and the drying process is moderate; and the heat supply pipeline is arranged to cooperate with the hot air supply device and the air return pipe for enabling the heat to be used in a cycle mode, the internal circulation of the warm air is realized, the effect of being more energy-saving is achieved, the drying efficiency is improved, and the drying quality is improved.

The invention discloses a submerged arc furnace capable of adjusting the angle of a combustor. The submerged arc furnace comprises a submerged arc furnace main body; a flame spray unit is arranged onthe submerged arc furnace main body; the flame spray unit is installed on the submerged arc furnace main body through an angle adjusting unit; the flame spray end of the flame spray unit is located inthe submerged arc furnace main body; a through hole used for accommodating the flame spray end of the flame spray unit is formed in the submerged arc furnace main body; and a plugging unit is arranged in the through hole. The submerged arc furnace disclosed by the invention solves the problems that in the prior art, the angle of a combustor arranged on a furnace body is preset and cannot be adjusted according to specific working conditions to make the equipment achieve higher energy efficiency, and waste of resources is likely to be caused.