CN109611842B - Ultra-low nitrogen emission gas burner - Google Patents

Ultra-low nitrogen emission gas burner Download PDF

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Publication number
CN109611842B
CN109611842B CN201910040027.6A CN201910040027A CN109611842B CN 109611842 B CN109611842 B CN 109611842B CN 201910040027 A CN201910040027 A CN 201910040027A CN 109611842 B CN109611842 B CN 109611842B
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Prior art keywords
gas
air
multiple distributor
combustion chamber
spray holes
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CN201910040027.6A
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CN109611842A (en
Inventor
肖彬
王川
刘喜斌
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Yueyang Yuanda Heat Energy Equipment Co ltd
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Yueyang Yuanda Heat Energy Equipment Co ltd
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    • 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
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
    • 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
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

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

Abstract

本发明公开了一种超低氮排放燃气燃烧器，所述燃烧器主体内设有风箱、燃气分配包、燃气喷管、空气多次分配器、燃气多次分配器、强化燃烧室，所述燃气管道和燃气分配包相连，燃气分配包上接有燃气多次分配器，所述燃气多次分配器上分布有燃气喷孔，所述燃气喷孔的开口在强化燃烧室壁上；所述空气管道和风箱相连，所述风箱接有空气多次分配器，所述空气多次分配器为上分布有空气喷孔，所述空气喷孔的开口在强化燃烧室壁上。本发明可将火焰分割许多小火炬，燃烧烟气掺混到2次空气里面，再与剩余的燃气进行燃烧，使得每个小火炬产生的温度被迅速散热，这样控制火焰使得火焰温度低，因而产生的NOX排放会很低。

The present invention discloses an ultra-low nitrogen emission gas burner, wherein the burner body is provided with a bellows, a gas distribution package, a gas nozzle, an air multiple distributor, a gas multiple distributor, and an enhanced combustion chamber, wherein the gas pipeline is connected to the gas distribution package, the gas distribution package is connected to the gas multiple distributor, the gas multiple distributor is provided with gas spray holes, and the opening of the gas spray holes is on the wall of the enhanced combustion chamber; the air pipeline is connected to the bellows, the bellows is connected to the air multiple distributor, the air multiple distributor is provided with air spray holes, and the opening of the air spray holes is on the wall of the enhanced combustion chamber. The present invention can divide the flame into many small torches, mix the combustion flue gas into the secondary air, and then burn with the remaining gas, so that the temperature generated by each small torch is quickly dissipated, so that the flame temperature is low and the NO x emission generated is very low.

Description

Ultralow nitrogen emission gas burner
Technical Field
The invention relates to a combustion device for an industrial fuel furnace, in particular to an ultralow-nitrogen-emission gas burner for the industrial fuel furnace.
Background
Industrial furnaces are classified into two types according to heat supply modes, namely flame furnaces (or fuel furnaces) which heat workpieces by using combustion heat of solid, liquid or gas fuel in the furnaces, and electric furnaces which convert electric energy into heat for heating.
According to the national standard GB 13271-2012 "emission Standard for atmospheric pollutants of boiler", the NOx emission of newly built gas-fired boiler cannot exceed 200mg/m3 (100 ppm), and the important area cannot exceed 150mg/m3 (75 ppm). As the temperature of the fuel furnace in the metallurgical industry is high, the common temperature is about 1100 ℃, the NO X emission of the old product is generally (240-300) mg/m 3, and the original fuel furnace does not meet the requirements along with the improvement of the national environmental protection on the NOx emission requirements. Since fuel is burned in an industrial fuel furnace by a burner mounted on the industrial furnace, the performance of the burner is directly related to the NOx emissions of the industrial furnace fuel. It is possible to reduce NOx emissions by modifying the burner used on an industrial fuel furnace.
Disclosure of Invention
The invention aims to provide a gas burner for an industrial fuel furnace, which has the advantages of simple structure and maintenance, has no specific size requirement on the combustion hearth space of the industrial fuel furnace, and finally has the smoke emission NOX of less than 58mg/m 3.
The ultralow nitrogen emission gas burner is characterized in that the burner body is a single cylinder, a bellows, a gas distribution bag, a gas spray pipe, an air multiple distributor, a gas multiple distributor and a reinforced combustion chamber are arranged in the single cylinder, one end of the single cylinder is connected with a gas pipeline and an air pipeline, the gas pipeline is connected with the gas distribution bag, the gas distribution bag is of an internal hollow structure, the gas distribution bag is connected with the gas multiple distributor, the gas multiple distributor is a plurality of gas spray pipes which are arranged in parallel and are arrayed into a ring shape, gas spray holes with adjustable gas volume are distributed on the rear half section of the gas spray pipes, openings of the gas spray holes are formed in the reinforced combustion chamber wall, the air pipeline is connected with the bellows, the bellows is connected with the air multiple distributor, the air multiple distributor is a space outside the rear half section of the gas spray pipe of the gas multiple distributor, the air multiple distributor is distributed with the air spray holes, and the openings of the air spray holes are formed in the reinforced combustion chamber wall.
The gas distribution package is welded with the gas spray pipe, the air multiple distributor, the gas multiple distributor and the reinforced combustion chamber into a whole, and the bellows are independently arranged.
The air spray holes and the gas spray holes adopt concentric circular hole structures, and the air spray holes are arranged outside the gas spray holes.
The gas spray holes are distributed at equal intervals.
The key innovation of the invention is that 1, the flame is divided and combusted through the gas spray hole. 2. And recycling the flue gas in the enhanced combustion chamber. 3. And (5) burning in a dark or light state. Therefore, the flame can be divided into a plurality of small torches under the condition of oxygen deficiency, flue gas generated by the flame at the root of the burner is mixed into 2 times of air and then burnt with the rest of fuel gas, so that the temperature generated by each small torch is rapidly radiated, and the flame is controlled to have low temperature, so that the generated NO X emission is very low.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a gas and air flow diagram of the present invention;
In the figure, 1, an air pipeline, 2, a bellows, 3, an air multiple distributor, 4, a fuel gas pipeline, 5, a fuel gas distribution package, 6, a fuel gas multiple distributor and 7, a reinforced combustion chamber.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description:
The invention has the advantages that the structures of all the parts are independent, all the parts are connected in a split combination mode, and the air and the fuel gas are mixed in proportion between the air multi-time distributor and the fuel gas distribution bag to leave enough space, the air and the fuel gas are unified into the same channel enhanced combustion chamber by the structure of the invention, and secondary combustion is completed in the enhanced combustion chamber, the invention optimizes the process that other general low-nitrogen burners can perform re-proportioning combustion only by leading the fuel gas and the air to enter the hearth or the special combustion chamber, thus the structure of the invention fully meets the environmental use requirement required by users when the combustion is completed and enters the equipment, and achieves the aims of high efficiency, energy saving and consumption reduction in advance under the corresponding conditions.
The structural and arrangement features of the present invention are further described below:
As can be seen from fig. 1, the ultralow nitrogen emission gas burner comprises a burner main body, wherein the burner main body is a single cylinder, a bellows 2, a gas distribution bag 5, a gas spray pipe, an air multiple distributor 3, a gas multiple distributor 6 and a reinforced combustion chamber 7 are arranged in the single cylinder, one end of the single cylinder is connected with a gas pipeline 4 and an air pipeline 1, the gas pipeline is connected with the gas distribution bag, the gas distribution bag is of an internal hollow structure, the gas distribution bag is connected with the gas multiple distributor, the gas multiple distributor is a plurality of gas spray pipes which are arranged in parallel and are arrayed into a ring shape, gas spray holes with adjustable gas quantity are distributed on the rear half section of the gas spray pipe, the gas spray holes are opened on the reinforced combustion chamber wall, the air pipeline is connected with the bellows, the air multiple distributor is a space outside the rear half section of the gas spray pipe of the gas multiple distributor, the air multiple distributor is distributed with air spray holes with adjustable gas quantity, and the air spray holes are opened on the reinforced combustion chamber wall. The air spray holes and the gas spray holes adopt concentric circular hole structures, and the air spray holes are arranged outside the gas spray holes.
All parts of the burner are welded and formed, the appearance of the whole product is a single cylinder, no complex external belt part exists, the appearance is concise and attractive, the practicability is high, meanwhile, the gas distribution bag, the gas spray pipe, the air multiple distributor, the gas multiple distributor and the reinforced combustion chamber are all connected into a whole through welding, and the bellows exists independently.
As can be seen from fig. 2, combustion air is fed through the air duct 1, the windbox 2 into the air multi-distributor 3 and from the air jet holes into the enhanced combustion chamber 7. The gas enters the gas distribution package 5 through the gas pipeline 4 and is distributed to the gas spray holes of the gas multiple distributor 6 to enter the enhanced combustion chamber 7, when the gas and the air enter the enhanced combustion chamber through the respective spray holes, the gas is firstly combusted with part of air, the smoke generated by the combustion is mixed with the 2 times of air distributed by the air multiple distributor and then is mixed with the gas which is not combusted, because each small torch has a certain interval, the generated high temperature is cooled by the 2 times of air diluted heat, and the 2 times of air is combusted with the rest of gas for 2 times after being mixed with the smoke, so that the flame temperature of the whole combustion process is controlled, and the NOX generated by the high temperature is correspondingly controlled.
The embodiments of the present invention are merely described in terms of preferred embodiments of the present invention, and the present invention is not limited to the spirit and scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of the present invention, and the technical content claimed by the present invention is fully described in the claims.

Claims (2)

1.一种超低氮排放燃气燃烧器，包括燃烧器主体，其特征在于：所述燃烧器主体为一单圆柱体，单圆柱体内设有风箱、燃气分配包、燃气喷管、空气多次分配器、燃气多次分配器、强化燃烧室，单圆柱体的一端接有燃气管道和空气管道，所述燃气管道和燃气分配包相连，燃气分配包为内部中空结构，燃气分配包上接有燃气多次分配器，所述燃气多次分配器为多根平行设置并排列成环形的燃气喷管，所述燃气喷管的后半段上分布有可调节气量大小的燃气喷孔，所述燃气喷孔的开口在燃气喷管壁上；所述空气管道和风箱相连，所述风箱接有空气多次分配器，所述空气多次分配器为燃气多次分配器的燃气喷管的后半段外的空间，空气多次分配器上分布有空气喷孔，所述空气喷孔的开口在强化燃烧室壁上；1. An ultra-low nitrogen emission gas burner, comprising a burner body, characterized in that: the burner body is a single cylinder, in which a bellows, a gas distribution bag, a gas nozzle, an air multiple distributor, a gas multiple distributor, and an enhanced combustion chamber are arranged, one end of the single cylinder is connected to a gas pipeline and an air pipeline, the gas pipeline is connected to the gas distribution bag, the gas distribution bag is an internal hollow structure, the gas distribution bag is connected to the gas multiple distributor, the gas multiple distributor is a plurality of gas nozzles arranged in parallel and arranged in a ring, the rear half of the gas nozzle is distributed with gas spray holes with adjustable gas volume, the opening of the gas spray hole is on the wall of the gas nozzle; the air pipeline is connected to the bellows, the bellows is connected to the air multiple distributor, the air multiple distributor is the space outside the rear half of the gas nozzle of the gas multiple distributor, the air multiple distributor is distributed with air spray holes, and the opening of the air spray holes is on the wall of the enhanced combustion chamber; 所述燃烧器主体内设的燃气分配包与燃气喷管、空气多次分配器、燃气多次分配器、强化燃烧室焊接成整体，风箱单独存在；The gas distribution package in the burner body is welded into a whole with the gas nozzle, the air multiple distributor, the gas multiple distributor and the enhanced combustion chamber, and the wind box exists separately; 所述空气喷孔和所述燃气喷孔采用同心圆孔结构，所述空气喷孔在燃气喷孔外；The air spray hole and the gas spray hole adopt a concentric circle hole structure, and the air spray hole is outside the gas spray hole; 助燃空气通过空气管道，风箱进入空气多次分配器，从空气喷孔进入强化燃烧室，燃气通过燃气管道进入燃气分配包分配到燃气多次分配器的燃气喷孔进入强化燃烧室，当燃气与空气通过各自喷孔进入强化燃烧室后，燃气先与部分空气进行燃烧，燃烧产生的烟气与空气多次分配器分配来的2次空气进行混合后再与没有燃烧完的燃气进行混合燃烧，由于每个小火炬有一定的间距，产生的高温被2次空气稀热冷却，2次空气由于掺混了烟气后再与剩余的燃气进行2次燃烧，使得整个燃烧过程的火焰温度得到了控制，因此高温产生NOX相应得到控制。The combustion-supporting air passes through the air duct and the bellows and enters the air multiple distributor, and enters the enhanced combustion chamber from the air nozzle. The gas enters the gas distribution bag through the gas pipeline and is distributed to the gas nozzle of the gas multiple distributor and enters the enhanced combustion chamber. When the gas and air enter the enhanced combustion chamber through their respective nozzles, the gas is first burned with part of the air, and the flue gas generated by the combustion is mixed with the secondary air distributed by the air multiple distributor and then mixed with the unburned gas for combustion. Since each small torch has a certain distance between them, the high temperature generated is cooled by the dilute heat of the secondary air. The secondary air is mixed with the flue gas and then burned twice with the remaining gas, so that the flame temperature of the entire combustion process is controlled, and the NOX generated by the high temperature is controlled accordingly. 2.根据权利要求1所述的超低氮排放燃气燃烧器，其特征在于：所述燃气喷孔为等距分布。2. The ultra-low nitrogen emission gas burner according to claim 1 is characterized in that the gas spray holes are equidistantly distributed.
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110513887B (en) * 2019-09-17 2024-10-18 岳阳远大热能设备有限公司 Ultralow nitrogen emission gas hot-blast stove
CN112879904B (en) * 2021-02-05 2025-03-28 江苏琅特环保工程有限公司 A small low nitrogen combustion burner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201396761Y (en) * 2009-05-18 2010-02-03 郑州豫兴耐火材料有限公司 The burner with double rows of gas and air nozzles in the pre-combustion chamber and the external premixed combustion
CN106524154A (en) * 2016-11-28 2017-03-22 北京水木星源环保科技有限公司 Gas-graded low-NOx burner
CN209458939U (en) * 2019-01-16 2019-10-01 岳阳远大热能设备有限公司 Ultra-low nitrogen emission gas burner

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20032327A1 (en) * 2003-11-28 2005-05-29 Techint Spa GAS BURNER WITH LOW POLLUTING EMISSIONS.
CN205592954U (en) * 2016-05-06 2016-09-21 北京佳德昌科技有限责任公司 One -level gas injection type low NOx burner
CN107120652B (en) * 2017-05-09 2023-07-21 北京水木星源环保科技有限公司 Graded gas low-nitrogen burner
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201396761Y (en) * 2009-05-18 2010-02-03 郑州豫兴耐火材料有限公司 The burner with double rows of gas and air nozzles in the pre-combustion chamber and the external premixed combustion
CN106524154A (en) * 2016-11-28 2017-03-22 北京水木星源环保科技有限公司 Gas-graded low-NOx burner
CN209458939U (en) * 2019-01-16 2019-10-01 岳阳远大热能设备有限公司 Ultra-low nitrogen emission gas burner

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