CN205655295U - Fractional combustion gas low NOx burner - Google Patents

Fractional combustion gas low NOx burner Download PDF

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Publication number
CN205655295U
CN205655295U CN201620433253.2U CN201620433253U CN205655295U CN 205655295 U CN205655295 U CN 205655295U CN 201620433253 U CN201620433253 U CN 201620433253U CN 205655295 U CN205655295 U CN 205655295U
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CN
China
Prior art keywords
flue gas
spray gun
passage
wind passage
fuel spray
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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.)
Withdrawn - After Issue
Application number
CN201620433253.2U
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Chinese (zh)
Inventor
邱康平
高克迎
程怀志
贾刚建
宋方真
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Xuzhou Kerong Environmental Resources Co Ltd
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Xuzhou Kerong Environmental Resources Co Ltd
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Priority to CN201620433253.2U priority Critical patent/CN205655295U/en
Application granted granted Critical
Publication of CN205655295U publication Critical patent/CN205655295U/en
Withdrawn - After Issue legal-status Critical Current
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Abstract

The utility model provides a fractional combustion gas low NOx burner, include one -level fuel spray gun, second grade fuel spray gun, flue gas inner loop draw penetrate tub, combustion -supporting wind passageway, central direct current wind passageway, whirl wind passageway, secondary whirl wind passageway, throat formula spout, center direct current wind passageway is at the center of throat formula spout, one time whirl wind passageway, secondary whirl wind passageway are arranged in the central direct current wind passageway outside in proper order, one -level fuel spray gun circumference equipartition is between whirl wind passageway, secondary whirl wind passageway, the flue gas inner loop draws penetrates the pipe, lies in combustor throat formula and spouts the intraoral outside, and second grade fuel spray gun stretches into the flue gas inner loop and draws and penetrate the intraduct, the flue gas inner loop draw penetrate pipe and second grade fuel spray gun together the equipartition on same reference circle. The utility model discloses fuse means such as fuel is hierarchical, air classification, flue gas inner loop, reduced flame high -temperature region temperature, prolonged the mixing time of fuel and air, effectively restrained NOx's formation.

Description

A kind of fractional combustion combustion gas low NO
Technical field
This utility model relates to a kind of burner, a kind of fractional combustion combustion gas low NO being applicable to station boiler and Industrial Boiler.
Background technology
Atmospheric pollution becomes the focus of present global concern, and one of main arch-criminal causing atmospheric pollution is oxynitride.In China, the universal and increasingly stringent of environmental requirement used along with combustion gas, all of station boiler and Industrial Boiler joined burner NOx emission are the most up to standard, pollute environment.Therefore research low-NOx combustor becomes one of solution atmospheric pollution effective ways.
After deliberation, the NOx that gas burner produces when running is mainly the generation of NO, NOx and is divided into thermal NO x, Quick-type NOx and fuel type NOx.For high heating value and the fuel of not nitrogen-containing compound, NOx is mainly heating power type.The principal element generating thermal NO x is temperature, controls ignition temperature, it is to avoid localized hyperthermia, can effectively control the generation of NOx.
Some conventional low nitrogen technology now, the technology such as including fuel staging, air classification, flue gas recirculation, owing to not being fully found the core of combustion gas low-NO_x combustion technology, combustion gas and combustion air are not reaching to rationally mix, burner structure is unreasonable, can not meet existing environmental requirement.
Utility model content
The purpose of this utility model is intended to overcome deficiency of the prior art, it is provided that a kind of simple in construction, can reduce nitrogen oxides and does not reduce efficiency of combustion, meets the fractional combustion combustion gas low NO of existing environmental requirement.
For achieving the above object, fractional combustion combustion gas low NO of the present utility model, including circulation induction tunnel, combustion air passage, center direct current wind passage, Whirl deposite tank passage, swirl flow wind passage, a closed-entry spout in the primary fuel spray gun being located in reducing cylinder, secondary fuel spray gun, flue gas;Described center direct current wind passage is located at the center of closed-entry spout, the diffusion ejection of combustion air straight line vertically, forms hollow flame;A described Whirl deposite tank passage, swirl flow wind passage are sequentially arranged in the outside of center direct current wind passage;Described center direct current wind passage and a Whirl deposite tank passage maintain static, and swirl flow wind passage can adjust front and back position vertically;Described primary fuel spray gun is multiple, circumferentially it is distributed between a Whirl deposite tank passage and swirl flow wind passage, secondary fuel spray gun is multiple, circumferentially it is distributed on the outside of swirl flow wind passage, in described flue gas, circulation induction tunnel is multiple, identical with secondary fuel spray gun number, and position is corresponding, and circumferentially it is distributed on inside closed-entry spout, it is positioned at the outermost of closed-entry spout, the front portion of secondary fuel spray gun is circulated inside induction tunnel in stretching into flue gas, and in flue gas, circulation induction tunnel is distributed on same reference circle together with secondary fuel spray gun.
Described center direct current wind passage, a Whirl deposite tank passage and swirl flow wind passage are concentric, a Whirl deposite tank passage positioned proximate central direct current wind passage.
A described Whirl deposite tank passage and swirl flow wind passage are axial bending blade construction, and blade bending angle is 20 °~75 °.
A described Whirl deposite tank passage is consistent with swirl flow wind passage rotation direction.
The flue gas interior circulation eductor outlet pipe that in circulation induction tunnel circulates injection inlet tube and is located at flue gas in described flue gas in including flue gas, circulation injection inlet tube is anterior, in flue gas, circulation eductor outlet pipe is the one in straight tube, Taper Pipe or Venturi tube.
In described flue gas, the outlet of circulation induction tunnel radially flushes with closed-entry spout outlet, or stretches out closed-entry spout outlet
Beneficial effect: owing to have employed technique scheme, it is little that fuel can be divided into two-stage, primary fuel to account for the ratio of total fuel by this utility model, the ratio that secondary fuel accounts for total fuel is big, and in combustion, primary fuel stablizes flame, anti-anti-avulsion fire, fire extinguishing, ignite secondary fuel simultaneously.Primary fuel is in oxygen-enriched lower burning, and center is direct current cold air, forms the hollow flame of low temperature.Secondary fuel circulates induction tunnel ejection in flue gas, the supersonic speed high-speed gas of ejection, the flue gas volume inspiration surely firing zonal combustion generation is entered flue gas injection inner circulating tube, mix with secondary fuel laggard enter primary combustion zone, form the quenched fuel gas of low heat value, reduce concentration and the concentration of oxygen of combustion zone ionic hydrocarbon group.Being formed flue gas ejector by circulating induction tunnel in secondary fuel spray gun and flue gas, injection flue gas ratio can reach 12:1.Air is divided into five layers of combustion air by center direct current wind passage, the gap between Whirl deposite tank passage, swirl flow wind passage, a primary fuel spray gun, the interior gap circulated between induction tunnel of flue gas, the backlayering time that five layers of combustion air, two grate firing gas and volume are inhaled is arranged, reduce the concentration of oxygen in flame temperature and flue gas, effectively reduce the discharge of NOx, meet existing environmental requirement.Its simple in construction, easy to operate, using effect is good, has wide applicability.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model;
Fig. 2 is circulation induction tunnel perspective view in flue gas of the present utility model;
Fig. 3 is right TV structure schematic diagram of the present utility model.
In figure: 1-secondary fuel spray gun, 2-combustion air passage, circulation induction tunnel in 3-flue gas, circulation injection inlet tube in 31-flue gas, circulation eductor outlet pipe, 4-secondary wind swirl channel, 5-primary fuel spray gun, 6-First air swirl channel in 32-flue gas, 7-center direct current wind passage, 8-closed-entry spout;A-combustion air, circulating flue gas in circulating flue gas, D-in B-fuel, C-.
Detailed description of the invention
Below in conjunction with the accompanying drawings an embodiment of the present utility model is further described:
Fractional combustion combustion gas low NO of the present utility model, is mainly made up of circulation induction tunnel 3, swirl flow wind passage 4,5, Whirl deposite tank passage 6 of primary fuel spray gun, center direct current wind passage 7 and closed-entry spout 8 in the secondary fuel spray gun 1 being located in reducing cylinder, combustion air passage 2, flue gas;Described center direct current wind passage 7 is located at the center of closed-entry spout 8, the diffusion ejection of combustion air straight line vertically, forms hollow flame;A described Whirl deposite tank passage 6, swirl flow wind passage 4 are sequentially arranged in the outside of center direct current wind passage 7;With one heart, a described Whirl deposite tank passage 6 is consistent with swirl flow wind passage 4 rotation direction for described 7, Whirl deposite tank passage 6 of center direct current wind passage and swirl flow wind passage 4;Described center direct current wind passage 7 and a Whirl deposite tank passage 6 maintain static, and swirl flow wind passage 4 can adjust front and back position vertically;Whirl deposite tank passage 6 positioned proximate central direct current wind passage 7;Described primary fuel spray gun 5 is multiple, and circumference uniform distribution is between a Whirl deposite tank passage 6 and swirl flow wind passage 4;Whirl deposite tank passage 6 and swirl flow wind passage 4 are axial bending blade construction, and blade bending angle is 20 °~75 °.In described flue gas, circulation induction tunnel 3 is multiple, identical with secondary fuel spray gun 1 number, and position is corresponding, and circumferentially it is distributed on inside closed-entry spout 8, it is positioned at the outermost of closed-entry spout 8, in flue gas is stretched in the front portion of secondary fuel spray gun 1, circulation induction tunnel 3 is internal, and in flue gas, circulation induction tunnel 3 is distributed on same reference circle together with secondary fuel spray gun 1.The flue gas interior circulation eductor outlet pipe 32 of circulation injection inlet tube 31 front portion in circulation induction tunnel 3 includes flue gas interior circulation injection inlet tube 31 and is located at flue gas in described flue gas, in flue gas, circulation eductor outlet pipe 32 is the one in straight tube, Taper Pipe or Venturi.In described flue gas, circulation injection inlet tube 31 superstructure matches with the reducing angle of reducing body, reducing top has the interior circulating flue gas entrance entered for interior circulating flue gas C, interior circulating flue gas D circulates eductor outlet pipe 32 in flue gas and sprays, in flue gas, the outlet of circulation induction tunnel 3 radially flushes with the outlet of contracting cartridge type spout 2, or stretches out contracting cartridge type spout 10~50mm.Described closed-entry spout 8 uses cone cylinder structure, beneficially flue gas inner loop.
Supply fuel is divided into primary fuel and secondary fuel by primary fuel spray gun 5 and secondary fuel spray gun 1 by this utility model, the ratio that primary fuel accounts for total fuel is little, the ratio that secondary fuel accounts for total fuel is big, and the scale of fuel is divided by spray orifice number, injection diameter on primary fuel spray gun, the quantity of secondary fuel spray gun and the spray gun of setting.
During work, combustion air A delivers to closed-entry spout 8 by combustion air passage 2, and fuel B is fed by primary fuel spray gun 5 and secondary fuel spray gun 1.Primary fuel spray gun 5 and secondary fuel spray gun 1 are uniformly distributed along the circumference respectively, primary fuel spray gun 5 is between First air swirl channel 6 and secondary wind swirl channel 4, Whirl deposite tank and swirl flow wind both ensure that primary fuel stably burnt, make again primary fuel in oxygen-enriched lower burning, ignition temperature is low, without district of localized hyperthermia.Achieve fuel staging, reduce the generation of NOx.Five layers of combustion air are formed by circulating the gap between induction tunnel 3 in the gap between 7, Whirl deposite tank passage 6 of center direct current wind passage, swirl flow wind passage 4, primary fuel spray gun 5, flue gas, it is respectively direct current wind I, Whirl deposite tank II, direct current wind III, Whirl deposite tank IV and direct current wind V five layers, five layers of combustion air enter classification by respective passage and spray into burner hearth, the hollow flame at center is formed after direct current wind I flameholding by the ejection of center direct current wind passage 7, First air swirl channel 6 forms eddy flow negative pressuren zone, make primary fuel stably burn, do not put out a fire;Secondary wind swirl channel 4, between primary fuel spray gun 5 and flue gas induction tunnel 3, forms eddy flow negative pressuren zone, it is ensured that the stable ignition of secondary fuel, and secondary wind swirl channel 4 can regulate front and back position vertically, regulates the length of flame.
In described secondary fuel spray gun 1 and flue gas, circulation induction tunnel 3 forms flue gas ejector, secondary fuel spray gun 1 circulates the inside of induction tunnel 3 in stretching into flue gas, concentric with circulating induction tunnel 3 in flue gas, the flue gas volume inspiration burning surely firing region produced by the supersonic speed high-speed gas of secondary fuel spray gun 1 ejection enters flue gas induction tunnel, uniformly mix with secondary fuel laggard enter primary combustion zone, form the quenched fuel gas of low heat value, reduce the concentration of combustion zone ionic hydrocarbon group, reduce flame mean temperature, extend the blending time of fuel and oxygen, fundamentally reduce the generation of NOx.
Fractional combustion combustion gas low NO of the present utility model, integrate circulation in fuel staging, air classification, flue gas, center direct current wind passage 7 is at the center of spout, the direct current wind entered by center direct current wind passage 7 and First air swirl channel 6 and Whirl deposite tank, make the oxygen-enriched stable burning of primary fuel, form central hollow flame, reduce flame temperature, reduce the generation of nitrogen oxides.Secondary fuel sprays with ultrasonic speed, volume inhales the flue gas in central burner region, spray into the rear end burning in central burner region, reduce the concentration of primary combustion zone ionic hydrocarbon group, extend the blending time of fuel and oxygen, reduce flame temperature, the trace NOx that reduction central burner region generates, fundamentally inhibit the generation of NOx.

Claims (6)

1. a fractional combustion combustion gas low NO, it is characterised in that: it includes the primary fuel spray gun being located in reducing cylinder (5), circulation induction tunnel (3), combustion air passage (2), center direct current wind passage (7) in secondary fuel spray gun (1), flue gas, Whirl deposite tank passage (6), swirl flow wind passage (4), a closed-entry spout (8);Described center direct current wind passage (7) sets At the center of closed-entry spout (8), the diffusion ejection of combustion air straight line vertically, form hollow flame;A described eddy flow Wind passage (6), swirl flow wind passage (4) are sequentially arranged in the outside at center direct current wind passage (7);Described center direct current Wind passage (7) and a Whirl deposite tank passage (6) maintain static, and swirl flow wind passage (4) can adjust front and back position vertically; Described primary fuel spray gun (5) is multiple, is circumferentially distributed on a Whirl deposite tank passage (6) and swirl flow wind passage (4) Between, secondary fuel spray gun (1) is multiple, is circumferentially distributed on the outside of swirl flow wind passage (4), in described flue gas Circulation induction tunnel (3) is multiple, identical with secondary fuel spray gun (1) number, and position is corresponding, and is circumferentially distributed on contracting Mouth formula spout (8) inner side, is positioned at the outermost of closed-entry spout (8), and flue gas is stretched in the front portion of secondary fuel spray gun (1) Interior circulation induction tunnel (3) is internal, and in flue gas, circulation induction tunnel (3) is distributed on same point together with secondary fuel spray gun (1) On degree circle.
Fractional combustion combustion gas low NO the most according to claim 1, it is characterised in that: described center direct current wind passage (7), a Whirl deposite tank passage (6) and swirl flow wind passage (4) concentric, one time Whirl deposite tank passage (6) positioned proximate central is straight Stream wind passage (7).
Fractional combustion combustion gas low NO the most according to claim 1, it is characterised in that: a described Whirl deposite tank passage (6) and swirl flow wind passage (4) is axial bending blade construction, blade bending angle is 20 °~75 °.
Fractional combustion combustion gas low NO the most according to claim 1, it is characterised in that: a described Whirl deposite tank passage (6) consistent with swirl flow wind passage (4) rotation direction.
Fractional combustion combustion gas low NO the most according to claim 1, it is characterised in that: circulation induction tunnel in described flue gas (3) follow in the flue gas that in circulating injection inlet tube (31) in including flue gas and being located at flue gas, circulation injection inlet tube (31) is anterior Ring eductor outlet pipe (32), in flue gas, circulation eductor outlet pipe (32) is the one in straight tube, Taper Pipe or Venturi tube.
Fractional combustion combustion gas low NO the most according to claim 1, it is characterised in that: in described flue gas, circulation is drawn The outlet penetrating pipe (3) radially flushes with closed-entry spout (8) outlet, or stretches out closed-entry spout (8) outlet.
CN201620433253.2U 2016-05-12 2016-05-12 Fractional combustion gas low NOx burner Withdrawn - After Issue CN205655295U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105805746A (en) * 2016-05-12 2016-07-27 徐州科融环境资源股份有限公司 Classified-combustion fuel gas low-nitrogen combustor
CN106678793A (en) * 2017-01-25 2017-05-17 上海华之邦科技股份有限公司 Fuel gas graded and segmented distribution combustion device and fuel gas graded and segmented distribution method thereof
CN107270287A (en) * 2017-06-22 2017-10-20 北京奥林联诚能源设备有限公司 A kind of low NO
CN108954305A (en) * 2018-08-15 2018-12-07 山东中科天健环保科技有限公司 A kind of novel hierarchical burning low nitrogen oxide burner structure
CN109099425A (en) * 2018-10-22 2018-12-28 北京泷涛环境科技有限公司 A kind of interior super low NO of circulation of flue gas
CN110173690A (en) * 2019-06-24 2019-08-27 上海锅炉厂有限公司 A kind of boiler combustion gas low NO
CN110207120A (en) * 2019-06-24 2019-09-06 上海锅炉厂有限公司 A kind of combustion gas low NO
CN110454776A (en) * 2019-06-28 2019-11-15 浙江先创能源科技股份有限公司 A kind of boiler smoke internal circulation system
CN110469848A (en) * 2019-09-11 2019-11-19 江阴德尔热能机械有限公司 A kind of ultralow nitrogen combustion apparatus of flue gas recirculation
CN110869673A (en) * 2017-07-21 2020-03-06 库珀斯解决方案有限公司 Burner with a burner head
CN111121005A (en) * 2019-12-02 2020-05-08 中国科学院过程工程研究所 Decoupling gas burner and using method thereof
CN111396871A (en) * 2020-01-17 2020-07-10 华中科技大学 Microminiature combustor with multistage passive air inlet function
CN111780107A (en) * 2020-07-07 2020-10-16 中国科学院过程工程研究所 Gas decoupling combustor and using method thereof
CN111810951A (en) * 2020-07-17 2020-10-23 北京泷涛环境科技有限公司 Environment-friendly combustor with ultralow nitrogen oxide emission

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105805746B (en) * 2016-05-12 2017-12-15 徐州科融环境资源股份有限公司 A kind of fractional combustion combustion gas low NO
CN105805746A (en) * 2016-05-12 2016-07-27 徐州科融环境资源股份有限公司 Classified-combustion fuel gas low-nitrogen combustor
CN106678793A (en) * 2017-01-25 2017-05-17 上海华之邦科技股份有限公司 Fuel gas graded and segmented distribution combustion device and fuel gas graded and segmented distribution method thereof
CN106678793B (en) * 2017-01-25 2019-04-30 上海华之邦科技股份有限公司 The hierarchical segmented configuration burner of combustion gas and its hierarchical segmented configuration method of combustion gas
CN107270287A (en) * 2017-06-22 2017-10-20 北京奥林联诚能源设备有限公司 A kind of low NO
CN110869673A (en) * 2017-07-21 2020-03-06 库珀斯解决方案有限公司 Burner with a burner head
CN108954305A (en) * 2018-08-15 2018-12-07 山东中科天健环保科技有限公司 A kind of novel hierarchical burning low nitrogen oxide burner structure
CN109099425B (en) * 2018-10-22 2022-06-28 北京泷涛环境科技有限公司 Flue gas inner loop ultralow nitrogen combustor
CN109099425A (en) * 2018-10-22 2018-12-28 北京泷涛环境科技有限公司 A kind of interior super low NO of circulation of flue gas
CN110173690A (en) * 2019-06-24 2019-08-27 上海锅炉厂有限公司 A kind of boiler combustion gas low NO
CN110207120A (en) * 2019-06-24 2019-09-06 上海锅炉厂有限公司 A kind of combustion gas low NO
CN110454776A (en) * 2019-06-28 2019-11-15 浙江先创能源科技股份有限公司 A kind of boiler smoke internal circulation system
CN110469848A (en) * 2019-09-11 2019-11-19 江阴德尔热能机械有限公司 A kind of ultralow nitrogen combustion apparatus of flue gas recirculation
CN111121005B (en) * 2019-12-02 2021-04-09 中国科学院过程工程研究所 Decoupling gas burner and using method thereof
CN111121005A (en) * 2019-12-02 2020-05-08 中国科学院过程工程研究所 Decoupling gas burner and using method thereof
CN111396871A (en) * 2020-01-17 2020-07-10 华中科技大学 Microminiature combustor with multistage passive air inlet function
CN111396871B (en) * 2020-01-17 2021-03-26 华中科技大学 Microminiature combustor with multistage passive air inlet function
CN111780107A (en) * 2020-07-07 2020-10-16 中国科学院过程工程研究所 Gas decoupling combustor and using method thereof
CN111780107B (en) * 2020-07-07 2021-11-09 中国科学院过程工程研究所 Gas decoupling combustor and using method thereof
CN111810951A (en) * 2020-07-17 2020-10-23 北京泷涛环境科技有限公司 Environment-friendly combustor with ultralow nitrogen oxide emission
CN111810951B (en) * 2020-07-17 2022-06-28 北京泷涛环境科技有限公司 Environment-friendly combustor with ultralow nitrogen oxide emission

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C14 Grant of patent or utility model
GR01 Patent grant
CB03 Change of inventor or designer information

Inventor after: Qiu Kangping

Inventor after: Liu Yixin

Inventor after: Gao Keying

Inventor after: Cheng Huaizhi

Inventor after: Jia Gangjian

Inventor after: Song Fangzhen

Inventor before: Qiu Kangping

Inventor before: Gao Keying

Inventor before: Cheng Huaizhi

Inventor before: Jia Gangjian

Inventor before: Song Fangzhen

CB03 Change of inventor or designer information
AV01 Patent right actively abandoned

Granted publication date: 20161019

Effective date of abandoning: 20171215

AV01 Patent right actively abandoned