CN112923367A - Multi-flame split type low-nitrogen combustor - Google Patents

Multi-flame split type low-nitrogen combustor Download PDF

Info

Publication number
CN112923367A
CN112923367A CN202110350197.1A CN202110350197A CN112923367A CN 112923367 A CN112923367 A CN 112923367A CN 202110350197 A CN202110350197 A CN 202110350197A CN 112923367 A CN112923367 A CN 112923367A
Authority
CN
China
Prior art keywords
flame
main
ignition
nozzle
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110350197.1A
Other languages
Chinese (zh)
Inventor
陈关海
杨高战
李洁
郝铸平
何亚杰
金辉
孟智炯
汤井祝
张新勇
王勇
沈梅龙
韩伟帅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Lingyun Ruisheng Combustion Co ltd
Original Assignee
Shanghai Lingyun Ruisheng Combustion Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Lingyun Ruisheng Combustion Co ltd filed Critical Shanghai Lingyun Ruisheng Combustion Co ltd
Priority to CN202110350197.1A priority Critical patent/CN112923367A/en
Publication of CN112923367A publication Critical patent/CN112923367A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/08—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with axial outlets at the burner head
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/725—Protection against flame failure by using flame detection devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/007—Mixing tubes, air supply regulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

A multi-flame split low-nitrogen burner comprises a flame tube, a combustion head, a pulley guide rail, a positioning fastening screw, a flame monitor and an air box; the rear end of the flame tube and the front end of the air box are installed together, the front end of the flame tube is positioned in the boiler furnace, and the rear end of the air box is connected with an external fan and an air quantity adjusting mechanism; the pulley guide rail is arranged at the inner upper end of the flame tube, the pulley assembly is arranged in the pulley guide rail, the lower connecting rod of the pulley assembly is arranged with one side of the combustion head outside the upper end of the gas distribution pipe, the other side of the combustion head outside the upper end of the gas distribution pipe is provided with the positioning fixing column, and the lower end of the positioning fastening screw rod is connected with the positioning fixing column; the flame monitor is arranged outside the flame tube. The invention does not adopt flue gas external circulation, only adopts flame staged and staged combustion, can realize the requirement that the NOx emission is less than 50mg/Nm3, and improves the combustion efficiency. Based on the above, the invention has good application prospect.

Description

Multi-flame split type low-nitrogen combustor
Technical Field
The invention relates to the technical field of burner equipment, in particular to a multi-flame split type low-nitrogen burner.
Background
With the promotion of new national standards of flue gas emission of burners for boilers, low-nitrogen burners have become the standard allocation requirement of the market, but the requirements of the standard of low-nitrogen emission in various regions are different, for example, Beijing requires NOX≤30mg/m3While Shanghai requires NOX≤50mg/m3Therefore, the technical route adopted by the combustor is different according to different index requirements. In order to meet different index requirements, the existing combustor is generally realized by adopting a mode of flue gas external circulation and fractional combustion, but the flue gas external circulation inevitably loses part of the thermal efficiency of the boiler, and the energy-saving effect is slightly poor. Based on the above, provide one kind and do not need the flue gas extrinsic cycleIt is necessary to provide a burner which can achieve the low nitrogen emission requirement and achieve a high combustion efficiency.
Disclosure of Invention
In order to overcome the defects that the existing burner realizes low-nitrogen emission by adopting a mode of smoke external circulation and fractional sectional combustion and has low relative boiler thermal efficiency due to limited structure, the invention provides the multi-flame split type low-nitrogen burner which can realize the requirement that NOX emission is less than 50mg/Nm3 and improve the boiler thermal efficiency by only adopting flame fractional sectional combustion instead of smoke external circulation.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a multi-flame split low-nitrogen burner comprises a flame tube, a combustion head, a pulley guide rail, a positioning fastening screw, a flame monitor and an air box; the rear end of the flame tube is arranged together with the front end of the air box, the front end of the flame tube is positioned in a boiler furnace, and the rear end of the air box is connected with an external fan and an air quantity adjusting mechanism; the pulley guide rail is arranged at the inner upper end of the flame tube, the pulley assembly is arranged in the pulley guide rail, the lower connecting rod of the pulley assembly is arranged with one side of the combustion head outside the upper end of the gas distribution pipe, the other side of the combustion head outside the upper end of the gas distribution pipe is provided with the positioning fixing column, and the lower end of the positioning fastening screw rod is connected with the positioning fixing column; the flame monitor is arranged outside the flame tube.
Furthermore, the combustion head comprises a plurality of main fire spray pipes, a central fire spray pipe, an ignition needle, an ignition pipe, an air deflector, a gas distribution pipe and a flame stabilizing disc, wherein the main fire spray pipes are provided with a plurality of flame stabilizing discs, the rear ends of the central fire spray pipes are arranged in the middle of the front end of the gas distribution pipe, the rear ends of the main fire spray pipes are annularly distributed and arranged around the front end of the gas distribution pipe at intervals, the flame stabilizing disc is arranged at the front ends of the central fire spray pipes and the main fire spray pipes, the outer side ends of the two main flame spray pipes are provided with ignition fixing supports, the ignition pipes and the ignition needles are respectively arranged at the two side ends of the ignition fixing supports, the lower ends of the gas distribution pipes are provided with gas inlet pipes, the lower parts of the gas inlet pipes are connected with gas pipelines, a plurality of fixing shaft levers are arranged between the outer side ends of the main flame spray pipes, a plurality of air deflectors are arranged, the plurality of air deflectors are respectively arranged at the side ends of the fixing shaft levers, and the rear side end of the flame stabilizing disc is arranged at the front outer side end of the flame tube.
Furthermore, the front end and the rear end of the fuel gas distribution pipe are of a closed structure, and the central fire spray pipe, the rear ends of the main fire spray pipes, the air inlet pipe and the fuel gas distribution pipe are in a communicated state.
Furthermore, the front ends of the main fire spray pipe, the central fire spray pipe and the ignition pipe are respectively provided with a main fire nozzle, a central fire nozzle and an ignition nozzle, the middle parts of the central fire nozzle and the ignition nozzle are provided with spray holes, the outer side end of the main fire nozzle is provided with a main spray hole, and the inner side of the main fire nozzle is provided with an auxiliary spray hole.
Further, a plurality of air holes are formed in the surface of the flame stabilizing disc at intervals.
The invention has the beneficial effects that: in the application of the invention, the fuel is divided into two stages of central fuel and main fuel for supply under the action of the main fire nozzles and the central fire nozzles, wherein the main fire nozzles are arranged in a plurality of stages, and the main fuel is divided into a plurality of stages to be sprayed out to form a multi-flame state, thereby being beneficial to the heat transfer effect of the flame, reducing the local high-temperature area of the flame and effectively reducing the generation of NOX in the combustion. The spray holes of the main fire nozzles are arranged on the outer side of the flame tube, and the fuel is mixed with the air in the hearth at the outlet diffusion position of the combustion air, so that the speed difference is formed between the fuel and the air, the mixing speed of the fuel and the air is accelerated, the flame expansion is facilitated, the area of the flame is enlarged, and the mutual heating effect among the flames is weakened; the production of NOx in combustion can be effectively reduced. The central flame spray pipe outputs a small amount of central fuel, so that the central temperature of the whole flame is not too low, the stability of the flame is facilitated, and the influence of the instability of the flame after the outer ring main flame is expanded is counteracted; the flame stabilizing disc is arranged at the position of the end face of the flame tube, the negative pressure area formed by the flame stabilizing disc can cause the backflow of the combusted flue gas, the flue gas internal circulation effect is formed, the flue gas internal circulation can reach the root of the flame, the optimal cooling effect is achieved, the channel of combustion air is divided into an inner layer and an outer layer, the periphery is in an advection state, the flow accounts for more than 70%, the inner side passes through the flame stabilizing disc body and is divided into an advection state and a rotational flow state by wind again, the flame shape can be changed by adjusting the proportion of the advection and the rotational flow, the flame temperature distribution is changed, the flame temperature is reduced as far as possible under the condition that the flame stability is ensured, and the NOX emission level is reduced. Based on the above, the invention has good application prospect.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a portion of the present invention;
fig. 3 is a front view of the present invention.
FIG. 4 is a schematic view of a partial structure of the burner head of the present invention.
Detailed Description
1, 2, 3 and 4, the multi-flame split low-nitrogen burner comprises a flame tube 1, a combustion head 2, a pulley guide rail 3, a positioning fastening screw 4, a flame monitor 5 and a wind box 6; the rear end of the flame tube 1 and the front end of the air box 6 are connected together through a flange plate and a screw nut, the front end of the flame tube 1 is positioned in a boiler furnace, and the rear end of the air box 6 is connected with an external fan and an external air quantity adjusting mechanism through pipelines; the pulley guide rail 3 is transversely installed in the middle of the inner upper end of the flame tube 1 through a screw nut, a pulley assembly 31 is installed inside the pulley guide rail 3, a pulley 311 of the pulley assembly 31 can move back and forth along the pulley guide rail 3, the lower part of a lower end connecting rod of the pulley assembly 31 is welded with the middle of the upper end of a fuel gas distributing pipe 26 of the combustion head, the middle of the rear side of the upper end of the pulley guide rail 3 and the middle of the rear side of the upper end of the flame tube are respectively provided with an opening, the rear part of the upper end of the fuel gas distributing pipe 26 of the combustion head is vertically welded with a positioning fixing column 7, a positioning fastening screw 4 is downwards led into the flame tube 1 through the middle of the rear side of the upper end of the pulley guide rail 3 and the middle of the rear; the front part of the rear outer side end of the flame tube 1 is provided with a mounting hole, the flame monitor 5 is mounted at the outer side end of the mounting hole, but a flame probe of the flame monitor 5 is positioned in the combustion tube 1 (the combustion condition in the flame tube 1 can be monitored in real time through monitoring equipment connected with a signal output end of the flame monitor).
As shown in fig. 1, 2, 3, and 4, the burner head includes a main flame nozzle 21, a central flame nozzle 22, an ignition needle 23, an ignition tube 24, an air deflector 25, a gas distribution pipe 26, and a flame stabilizing disc 27, the main flame nozzle 21 has six main flame nozzles, the rear end of the central flame nozzle 22 is installed in the middle of the front end of the gas distribution pipe 26, the rear ends of the six main flame nozzles 21 are annularly distributed and installed around the front end of the gas distribution pipe 26 at certain intervals, the flame stabilizing disc 27 is installed at the front ends of the central flame nozzle 21 and the six main flame nozzles 21, the front portions of the central flame nozzle 22 and the six main flame nozzles 21 are located outside a plurality of openings at the front end of the flame stabilizing disc 27, wherein an ignition fixing bracket 28 is installed between the front outer side ends of the two main flame nozzles 21, the ignition tube 24 is transversely installed in the middle of the ignition fixing bracket 28 and the outer side end of the gas distribution pipe 26, the ignition needle 23 is transversely installed at the inner side end of the ignition fixing bracket, the power input In the heat-resistant insulating pipe, the insulating pipe is led out through an opening at the lower end of the air box 6), the front end of the ignition pipe 24 is positioned at the rear end of the ignition needle 23, the rear end of the ignition pipe 24 is connected with the gas pipe through a high-temperature-resistant hose (the high-temperature-resistant hose is led out through an opening at the lower end of the air box 6), the lower part of the gas distribution pipe 26 is provided with an air inlet pipe 29, the lower part of the air inlet pipe 29 is connected with the gas pipeline through a flange, five fixed shaft rods 201 are arranged between the outer ends of six main flame spray pipes (the outer ends of the main flame spray pipes positioned between the ignition fixed brackets are not provided with shaft rods), five air deflectors 25 are arranged, the five air deflectors 25 are respectively arranged at the front side ends of the five fixed shaft rods 201, each air deflector 25 is positioned between the outer. The front and rear ends of the gas distribution pipe 26 are closed structures, and the central fire nozzle 22, the rear ends of the six main fire nozzles 21, the gas inlet pipe 29 and the gas distribution pipe 26 are in a communicated state. The front ends of the main fire nozzle 21, the central fire nozzle 22 and the ignition pipe 24 are respectively provided with a main fire nozzle 211, a central fire nozzle 221 and an ignition nozzle 241, the middle parts of the central fire nozzle 221 and the ignition nozzle 241 are provided with spray holes, the outer side end of the main fire nozzle 211 is provided with a main spray hole 2111, and the inner side of the main fire nozzle is provided with an auxiliary spray hole 2112 positioned at the rear end of the main spray hole. The surface of the flame stabilizing disc 27 has a plurality of openings as air flow holes at certain intervals.
As shown in fig. 1, 2, 3 and 4, in the present invention, the flame tube 1 extends into the boiler furnace to serve as a supply channel of combustion air, and in practical application, the air outlet in combustion is maintained within a certain air speed range, and at the same time, the air outlet serves as a combustion cold and hot interface to protect the combustion head 2. The air box is used as a pressure equalizing box of combustion air, which ensures that the air quantity entering the combustion head 2 is proper and the air pressure is uniform. Before and after the combustion head 2 is installed, the combustion head 2 can move back and forth along the horizontal direction through the pulley guide rail 3 (the connecting rod at the lower end of the pulley is divided into two sections which are connected through threads, so that the height adjustment can be realized), and the installation and the disassembly of the combustion head 2 are facilitated (the positioning screw rod 4 is loosened before the movement, and the positioning screw rod is fixed after the movement is in place). Each air deflector 25 can rotate along the fixed shaft stem 201 to adjust the angle and is fixed, 5 air deflectors 25 are provided, the distribution situation of the flow of the combustion air at the inner side and the outer side can be changed according to the change of the direction during installation and adjustment, and if the air deflectors 25 are in the horizontal direction, the inner air and the outer air (the air in the front end and the rear end of the air deflectors 25) are uniformly distributed; if the wind deflector 25 is inclined outward in the form of a bell mouth, the outside air is increased and the inside air is reduced, so that the shape of the burning flame can be changed.
As shown in fig. 1, 2, 3 and 4, when the present invention is used, external fuel gas is ejected through the front end fire nozzle 241 of the ignition tube, the igniter outputs high-voltage electric spark through the ignition needle 23 to ignite the fuel gas, meanwhile, the external fuel gas enters the fuel gas distribution pipe 26 of the burner through the air inlet pipe 29 and is ejected from the main nozzles 211 at the front ends of the six main ignition tubes 21 and the central nozzle 221 at the front end of the central burner, meanwhile, air input by the external fan enters the flame tube 1 through the air box, and then is ejected from the front end opening of the flame stabilizing disc 27 to be mixed with the fuel gas and ignited by the front end fire source of the ignition tube, and further the combustion generates heat. The present invention has the following advantages. (1) Under the action of the main fire nozzle 21 and the central fire nozzle 22, the fuel is divided into central fuel and main fuel for two-stage supply, wherein the main fire nozzle 21 is provided with a plurality of nozzles to form a multi-flame shape, which is beneficial to the heat transfer effect of the flame and reduces the local high-temperature area of the flame; the production of NOx in combustion can be effectively reduced. (2) The nozzle of the main fire nozzle 21 is arranged outside the flame tube 1, and is mixed with air in the hearth at the diffusion position of a combustion-supporting air outlet output by the flame stabilizing disc 27, and a speed difference is formed between the main fire nozzle and the combustion-supporting air outlet, so that the mixing speed of fuel and air is increased; meanwhile, the expansion of the flame is facilitated, the area of the flame is enlarged, the mutual heating effect among the flames is weakened, and the generation of NOX in combustion can be effectively reduced. (3) A central fire spray pipe nozzle 221 is arranged at the central position of the combustion head, so that the combustion head outputs a small amount of central fuel, the central temperature of the whole flame is not too low, the stability of the flame is facilitated, and the instability influence caused by the flame expanded by the outer ring main flame is counteracted. (4) The flame stabilizing disc 27 is arranged at the position which is parallel and level with the front end surface of the flame tube 1, the flame stabilizing disc 27 can cause the flue gas generated by combustion to flow back due to the negative pressure area formed by the air flow, the flue gas internal circulation effect is formed, the flue gas internal circulation can be up to the root of the flame, the optimal cooling effect is achieved, and the generation of NOX is reduced to the maximum extent. (5) The flame stabilizing disc 27 is arranged in the middle right in front of the flame tube 1, a channel of combustion air is divided into an inner layer and an outer layer, the periphery of the flame stabilizing disc is in a advection state, the flow rate accounts for more than 70%, the inner side of the flame stabilizing disc passes through the flame stabilizing disc body and is divided into an advection state and a rotational flow state again, the flame shape can be changed by adjusting the proportion of the advection to the rotational flow, the flame temperature distribution is changed, the flame temperature is reduced as far as possible under the condition that the flame stability is ensured, and the NOx emission level is reduced. (6) The spray holes 2111 and 2112 of the nozzle of the main fire spray pipe are distributed at the inner side and the outer side, and the large holes at the outer side are contacted with a large amount of advective air for combustion, so that the combustion speed is effectively accelerated; the inner side small holes are contacted with swirling air passing through the outer side of the flame stabilizing disc 27 for combustion, and flame is effectively stabilized. (7) The five air deflectors 25 can be independently adjusted, the flow of outside advection air can be further adjusted according to the actual situation of a matched boiler, and the flame shape and the temperature distribution effect are improved; the nozzle 211 of the main fire nozzle can independently rotate for a certain angle according to actual conditions, so that the main nozzles 2111 on the outer side are arranged at a certain angle, and a larger swirl effect is formed to accelerate combustion. (8) The split type structure can be independently and flexibly matched with the fan when being matched with a high-power boiler, meets the requirements of different air flow and air pressure according to the requirements, and ensures that the matched different boiler types can achieve ideal combustion effect. The invention can realize the requirement that the NOx emission is less than 50mg/Nm3, and improves the combustion efficiency.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. A multi-flame split low-nitrogen burner comprises a flame tube, a combustion head, a pulley guide rail, a positioning fastening screw, a flame monitor and an air box; the rear end of the flame tube is arranged together with the front end of the air box, the front end of the flame tube is positioned in a boiler furnace, and the rear end of the air box is connected with an external fan and an air quantity adjusting mechanism; the pulley guide rail is arranged at the inner upper end of the flame tube, the pulley assembly is arranged in the pulley guide rail, the lower connecting rod of the pulley assembly is arranged with one side of the combustion head outside the upper end of the gas distribution pipe, the other side of the combustion head outside the upper end of the gas distribution pipe is provided with the positioning fixing column, and the lower end of the positioning fastening screw rod is connected with the positioning fixing column; the flame monitor is arranged outside the flame tube.
2. The split type low-nitrogen burner with multiple flames according to claim 1, wherein the burner head comprises a plurality of main flame spray pipes, a central flame spray pipe, ignition needles, ignition pipes, air deflectors, a gas distribution pipe and a flame stabilizing disc, the main flame spray pipes are provided with a plurality of main flame spray pipes, the rear ends of the central flame spray pipes are arranged in the middle of the front end of the gas distribution pipe, the rear ends of the main flame spray pipes are annularly distributed and spaced around the front end of the gas distribution pipe, the flame stabilizing disc is arranged at the front ends of the central flame spray pipe and the main flame spray pipes, an ignition fixing bracket is arranged at the outer side ends of the two main flame spray pipes, the ignition tubes and the ignition needles are respectively arranged at the two side ends of the ignition fixing bracket, the lower end of the gas distribution pipe is provided with an air inlet pipe, the lower part of the air inlet pipe is connected with the gas pipeline, a plurality of fixing shaft levers are arranged between the outer side ends of the main flame spray pipes, the, the rear side end of the flame stabilizing disc is arranged at the front outer side end of the flame tube.
3. The split type low-nitrogen burner with multiple flames according to claim 1, wherein the front end and the rear end of the gas distribution pipe are of a closed structure, and the central fire nozzle, the rear ends of the main fire nozzles, the gas inlet pipe and the gas distribution pipe are in a communicated state.
4. The split type low-nitrogen burner with multiple flames according to claim 1, wherein the front ends of the main flame spray pipe, the central flame spray pipe and the ignition pipe are respectively provided with a main flame nozzle, a central flame nozzle and an ignition nozzle, the central flame nozzle and the ignition nozzle are respectively provided with a spray hole in the middle, the outer side end of the main flame nozzle is provided with a main spray hole, and the inner side of the main flame nozzle is provided with an auxiliary spray hole.
5. The split type low-nitrogen burner with multiple flames according to claim 1, wherein the surface of the flame stabilizing disc is provided with a plurality of air holes at certain intervals.
CN202110350197.1A 2021-03-31 2021-03-31 Multi-flame split type low-nitrogen combustor Pending CN112923367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110350197.1A CN112923367A (en) 2021-03-31 2021-03-31 Multi-flame split type low-nitrogen combustor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110350197.1A CN112923367A (en) 2021-03-31 2021-03-31 Multi-flame split type low-nitrogen combustor

Publications (1)

Publication Number Publication Date
CN112923367A true CN112923367A (en) 2021-06-08

Family

ID=76173521

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110350197.1A Pending CN112923367A (en) 2021-03-31 2021-03-31 Multi-flame split type low-nitrogen combustor

Country Status (1)

Country Link
CN (1) CN112923367A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114608013A (en) * 2022-04-20 2022-06-10 南京嘉燃机电设备有限公司 Multi-flame split type low-nitrogen combustor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114608013A (en) * 2022-04-20 2022-06-10 南京嘉燃机电设备有限公司 Multi-flame split type low-nitrogen combustor
CN114608013B (en) * 2022-04-20 2024-05-17 南京嘉燃机电设备有限公司 Multi-flame split low-nitrogen combustor

Similar Documents

Publication Publication Date Title
CN107559827B (en) Ultralow nitrogen gas burner
CN109323254B (en) Full premix water-cooling low-nitrogen burner for gas two-stage injection air
WO2020140383A1 (en) Two-stage fuel burning row burner
CN111256162A (en) Anti-slagging and anti-coking system and method for blending-burning low-ash-melting-point coal boiler
CN112923367A (en) Multi-flame split type low-nitrogen combustor
CN106016345A (en) Device mounted on supercritical W flame boiler for reducing temperature deviation of water-cooled walls
CN111780106A (en) Flameless burner of steel rolling heating furnace and application thereof
US4462795A (en) Method of operating a wall fired duct heater
US4286945A (en) Wall fired duct heater
CN214745724U (en) Multi-flame split type low-nitrogen combustor
CN209639004U (en) A kind of two-stage combustion formula fire row combustor
CN115013973B (en) Full premix water-cooling gas boiler
CN106051759A (en) Multistage separation center backflow axial cyclone burner
CN209763073U (en) Low Nox coke oven gas burner
CN210801184U (en) High-pressure-drop multistage strong-turbulence low-NOx emission gas burner
US4375952A (en) Wall fired duct heater
CN103807850B (en) A kind of afterburning burner for gas-turbine waste heat boiler
CN204084368U (en) Fuel gas with low heat value radiation pipe burner tip
CN114659105B (en) Straight rod type premix burner and low-nitrogen combustion method
CN206191572U (en) Fluidized bed boiler lighting up and low -load stable -combustion combustor
CN218237459U (en) Ultralow nitrogen gas burner
CN220152729U (en) Gradually-expanding injection burner
CN109631021A (en) A kind of premix staged-combustion method and device
CN220061773U (en) Tail gas burner of phosphorus furnace
CN219389716U (en) High-rigidity flame long-flame burner

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination