CN100439798C - Gas burning premixing high speed burning nozzle - Google Patents
Gas burning premixing high speed burning nozzle Download PDFInfo
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- CN100439798C CN100439798C CNB2005101307234A CN200510130723A CN100439798C CN 100439798 C CN100439798 C CN 100439798C CN B2005101307234 A CNB2005101307234 A CN B2005101307234A CN 200510130723 A CN200510130723 A CN 200510130723A CN 100439798 C CN100439798 C CN 100439798C
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- gas
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- premixer
- chamber
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 65
- 239000007789 gas Substances 0.000 claims abstract description 30
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 239000003054 catalyst Substances 0.000 claims abstract description 6
- 239000000919 ceramic Substances 0.000 claims abstract description 6
- 239000002737 fuel gas Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 abstract description 11
- 239000002245 particle Substances 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 2
- 239000003517 fume Substances 0.000 abstract 1
- 239000000567 combustion gas Substances 0.000 description 25
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 8
- 239000003546 flue gas Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
A high-speed burner with air-gas pre-mixing function for directly heating the fluidized solid particles is composed of the coaxially arranged gas tube, air tube and pre-mixing chamber, a mixing-igniting chamber containing high-temp porous ceramic catalyst, and a combustion chamber with cylindrical cap shape and fume outlet orifices on its side wall.
Description
Technical field
The present invention relates to a kind of gas burning premixing high speed burning nozzle.
Background technology
The fuel gas high-speed burner of using can be divided into premixed and non-premixed two kinds with regard to combustion gas and Air mixing mode at present.The adjustable range of premixed high combustion rate burner is little, and combustion gas and air can not be lower than a certain flow, otherwise tempering phenomenon can occur.Non-premixed not limited, can supply with preheated air; Can be divided into not temperature adjustment high combustion rate burner that is used for quick Convective Heating and the temperature adjustment high combustion rate burner that is used for heat treatment and drying oven by fuel gas high-speed burner purposes, the former does not supply auxiliary air, the coefficient of excess air change is little, the exit gas temperature adjustable range is little, latter's feeding secondary air, the coefficient of excess air vary within wide limits, the exit gas temperature adjustable range is also big.
Non-premixed fuel gas high-speed burner is that the combustion chamber is directly sent in combustion gas and air respectively, the two carries out non-premixed burning in the combustion chamber, in mixing arrangement, combustion gas usually along central tube, through entering the combustion chamber with the concentric nozzle of central tube or through the some small nozzles that form certain angle with air.The normal employing of common high combustion rate burner is non-premixed, as the Hot-Work company of Britain and the product of China Beijing Iron﹠Steel Design﹠Research Institute development, generally comprise fuel and three parts such as air adapter, combustion barrel and burner block, its operation principle be combustion gas at first with the mixed combustion in combustion barrel of part air, imperfect combustion combustion gas enters burner block and remaining air mixed combustion.The common defects of the non-premix burner of this class is: combustion gas and Air mixing process all are to finish by swirl-flow devices, the effect of mixing is limited, the volume of burner is big and heavy, flame holding is poor, be subject to influence, complex structure, maintenance inconvenience that burner is heated material outward, and since combustion gas and air in the combustion chamber, mix, mixed process has occupied a part of volume of combustion chamber, not only reduce the unit volume combustion intensity of combustion chamber, also can reduce the completeness of burning.But the adjustable range of this high combustion rate burner is bigger.
Premixed high combustion rate burner is that combustion gas and air are fully mixed before sending into the combustion chamber, and its mixed form is a lot, as large-scale employing ratio mixing drum blower fan, middle-size and small-size employing injector etc.What comparatively generally adopt in recent years is with the injector of air as working medium, and combustion gas is then used zero adjuster and kept its constant pressure, thus strict control combustion gas and Air mixing ratio.
The present widely used following several high combustion rate burner that has:
1, SGM type combustion gas low-voltage high speed burner: the combustion gas of SGM type combustion gas low-voltage high speed burner is thin layer through slit and flows out, air and combustion gas are met at an angle of 90, because the ejector action of air impels the two to mix strongly, mist enters the cylindrical combustion chamber burning through the waist circular port.Flame stabilization is to rely on high-temperature flue gas recirculation and combustion chamber wall surface between corner and stream thigh to realize.This kind high combustion rate burner coefficient of excess air adjustable range is wide, realizes smooth combustion easily, but the processing technology complexity, and volume is big, is not suitable for the situation of little space heating.
2, the high combustion rate burner of band flue gas reducing: the high combustion rate burner of band flue gas reducing is mainly used in cell-type METAL HEATING PROCESS stove.The characteristics of this kind high combustion rate burner are, air is along combustion chamber length decentralized supply, and are provided with the air throttle chamber.The decentralized supply of air has played the cooling effect to the combustion chamber, and like this, the combustion chamber can be with common heat resisting steel manufacturing.The flame holding height allows high combustion rate burner to work under big excess air coefficient.The characteristics of this high combustion rate burner have determined its structure more complicated, are not suitable for heating small particles material.
3, cast iron housing and welding shell high combustion rate burner: at the fuel gas inlet place one baffle plate is arranged, be supported on the combustion gas spout, force combustion gas to be flowed, produce eddy current simultaneously, help and Air mixing along the end inner surface with three round steel.Two rows of openings of air on the combustion chamber enter in the combustion chamber, burn while mixing with air.Make with corrosion resistant plate the combustion chamber, inner lining refractory.The combustion chamber reducing is made with the high-alumina refractory concrete, and there is stainless steel casing the outside, inner lining with silicon carbide.During high combustion rate burner work, refractory concrete is easy to generate the crack.For preventing this phenomenon, stainless steel casing not only has been installed, also be provided with the cold air road, keep outside air pressure greater than inboard flue gas pressures, in case the crack takes place, cold air can flow into cooling effect along seam, avoids hot flue gas to scurry outward, burns out burner.
4, self-preheating type high combustion rate burner: the self-preheating type high combustion rate burner is actually by individual high combustion rate burner and a counter-flow heat exchanger to be formed.Combustion gas flows into the combustion chamber from central tube, and air flows into the combustion chamber in air hose and Gas Pipe circumferential weld, and the heat exchanger fin is equipped with on the air hose surface.Flue gas becomes adverse current through the fin gap with air between sleeve pipe and air hose, flow to the burner front end and be discharged from.Air after the preheating enters combustion chamber and combustion gas mixing burning immediately.This type of high combustion rate burner complex structure, inconvenient maintenance is not suitable for heating fluidized material.
Up to the present, all high combustion rate burners all are intended for metallurgical furnace kiln, and these high combustion rate burners have some common drawbacks: bulky, complex structure is not suitable for heating small particles material and liquid material.
Summary of the invention
The purpose of this invention is to provide a kind of gas burning premixing high speed burning nozzle, be mainly used in direct heating and be in fluidised solid granular material.
Technical scheme of the present invention is as follows:
Gas burning premixing high speed burning nozzle provided by the invention comprises Gas Pipe 1, air hose 2, premixer 5, mixes catch fire chamber 6 and combustion chamber 8; Gas Pipe 1, air hose 2 and premixer's 5 three's coaxial arrangement, Gas Pipe 1 communicates with premixer 5 by the fuel gas inlet aperture 3 that is positioned at 5 bottoms, premixer, air hose 2 covers in Gas Pipe 1 outside, and communicate with premixer 5 by the air intake aperture 4 that is positioned on premixer's 5 sidewalls, 8 bottoms, combustion chamber and the mixing chamber 6 that catches fire is connected, it is characterized in that described mixing is caught fire and is filled with high temperature porous ceramics catalyst 7 in the chamber 6; Described combustion chamber 8 is a column type blast cap shape, and its sidewall has exhanst gas outlet aperture 9.
In the gas burning premixing high speed burning nozzle of the present invention, the fuel gas inlet aperture 3 of combustion gas by 5 bottoms, premixer enters premixer 5 with the speed of 150～200m/s, air enters premixer 5 by the air intake aperture 4 of premixer's sidewall with the speed about 200m/s, air and combustion gas be preliminary the mixing in premixer 5, then enter and mix the chamber 6 that catches fire and mix fully after wherein high temperature porous ceramics catalyst 7 contacts and catch fire with being positioned at, exhanst gas outlet aperture 9 ejection at a high speed of completing combustion in combustion chamber 8, high-temperature flue gas 8 sidewalls from the combustion chamber.
Principle of the present invention is; adopt said structure; especially high temperature porous ceramics catalyst can make combustion gas mix fully fast with air; and provide stable ignition source; thereby guarantee stable in the combustion chamber, the burning fully of combustion gas, high-temperature flue gas adds thermal material with up to the ejection of the speed more than 200m/s burner; the burning of combustion gas is not subjected to the external world to be heated the influence of material under the protection of the combustion chamber of column type blast cap shape.Because the gas burning premixing high speed burning nozzle combustion intensity that the present invention proposes is very high, can reach 70MW/m
3So the material that mixes catch fire chamber and combustion chamber must be a high temperature alloy, such as Cr25Ni20 or higher grade high temperature alloy.
The gas burning premixing high speed burning nozzle that the present invention proposes, combustion gas is fast with the air mixing velocity, mixes fully, burn complete, intensity is high, it is easy to adjust to burn, the burner volume is little, the combustion intensity height of unit volume; Can use separately, be specially adapted to the very narrow and small interior heating in space; Also can a plurality of burners parallel connections use, be used for the heating in the large space.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Referring to accompanying drawing 1, gas burning premixing high speed burning nozzle of the present invention, comprise Gas Pipe 1, air hose 2, premixer 5, mix catch fire chamber 6 and combustion chamber 8, Gas Pipe 1, air hose 2 and premixer's 5 three's coaxial arrangement, Gas Pipe 1 communicates with premixer 5 by the fuel gas inlet aperture 3 that is positioned at 5 bottoms, premixer, air hose 2 covers in Gas Pipe 1 outside, and communicates with premixer 5 by the air intake aperture 4 that is positioned on premixer's 5 sidewalls, and 8 bottoms, combustion chamber and the mixing chamber 6 that catches fire is connected; Mix in the chamber 6 that catches fire and be filled with high temperature porous ceramics catalyst 7; Combustion chamber 8 is a column type blast cap shape, and its sidewall has exhanst gas outlet aperture 9.
Claims (1)
1, a kind of gas burning premixing high speed burning nozzle, comprise Gas Pipe (1), air hose (2), premixer (5), mix catch fire chamber (6) and combustion chamber (8), Gas Pipe (1), air hose (2) and premixer (5) three's coaxial arrangement, Gas Pipe (1) communicates with premixer (5) by the fuel gas inlet aperture (3) that is positioned at bottom, premixer (5), air hose (2) covers in Gas Pipe (1) outside, and communicate with premixer (5) by the air intake aperture (4) that is positioned on premixer (5) sidewall, combustion chamber (8) bottom and the mixing chamber (6) that catches fire is connected; It is characterized in that described mixing is caught fire and is filled with high temperature porous ceramics catalyst (7) in the chamber (6); Described combustion chamber (8) is a column type blast cap shape, and its sidewall has exhanst gas outlet aperture (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101307234A CN100439798C (en) | 2005-12-23 | 2005-12-23 | Gas burning premixing high speed burning nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101307234A CN100439798C (en) | 2005-12-23 | 2005-12-23 | Gas burning premixing high speed burning nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1987199A CN1987199A (en) | 2007-06-27 |
| CN100439798C true CN100439798C (en) | 2008-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101307234A Active CN100439798C (en) | 2005-12-23 | 2005-12-23 | Gas burning premixing high speed burning nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100439798C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430091B (en) * | 2007-11-05 | 2010-07-21 | 中南大学 | Catalytic combustion premixing device |
| CN103047644A (en) * | 2013-01-28 | 2013-04-17 | 重庆大学 | Double-airflow channel air cap |
| CN104046976A (en) * | 2014-06-26 | 2014-09-17 | 贵州钢绳股份有限公司 | Gas heating system for pickling-phosphating production line |
| SE539758C2 (en) * | 2014-12-04 | 2017-11-21 | Powercell Sweden Ab | Catalytic burner arragement |
| CN108947209B (en) * | 2018-09-07 | 2021-09-21 | 台嘉玻璃纤维有限公司 | Automatic combustion control system of glass fiber pure oxygen kiln |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2148257Y (en) * | 1992-11-04 | 1993-12-01 | 樊燕刚 | Premixing internal-combustion and -heating type gas burning heat-exchanger |
| CN2201590Y (en) * | 1994-08-19 | 1995-06-21 | 尹哲 | Full premixing centripetal flame gas burner |
| US5569020A (en) * | 1994-11-05 | 1996-10-29 | Abb Research Ltd. | Method and device for operating a premixing burner |
| US5577904A (en) * | 1994-05-20 | 1996-11-26 | Abb Research Ltd. | Method of operating a premixing burner |
| US5655903A (en) * | 1994-11-23 | 1997-08-12 | Asea Brown Boveri Ag | Combustion chamber with premixing burners |
| CN2384112Y (en) * | 1999-08-13 | 2000-06-21 | 大庆石油管理局天然气公司 | Pre-mix degree adjustable gas burner |
| JP2002122309A (en) * | 2000-10-16 | 2002-04-26 | Osaka Gas Co Ltd | Turning pre-mixing burner and heat source machine equipped with former |
| CN2554481Y (en) * | 2002-07-02 | 2003-06-04 | 彭贤正 | High-efficient smokeless combustion-chamber device |
-
2005
- 2005-12-23 CN CNB2005101307234A patent/CN100439798C/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2148257Y (en) * | 1992-11-04 | 1993-12-01 | 樊燕刚 | Premixing internal-combustion and -heating type gas burning heat-exchanger |
| US5577904A (en) * | 1994-05-20 | 1996-11-26 | Abb Research Ltd. | Method of operating a premixing burner |
| CN2201590Y (en) * | 1994-08-19 | 1995-06-21 | 尹哲 | Full premixing centripetal flame gas burner |
| US5569020A (en) * | 1994-11-05 | 1996-10-29 | Abb Research Ltd. | Method and device for operating a premixing burner |
| US5655903A (en) * | 1994-11-23 | 1997-08-12 | Asea Brown Boveri Ag | Combustion chamber with premixing burners |
| CN2384112Y (en) * | 1999-08-13 | 2000-06-21 | 大庆石油管理局天然气公司 | Pre-mix degree adjustable gas burner |
| JP2002122309A (en) * | 2000-10-16 | 2002-04-26 | Osaka Gas Co Ltd | Turning pre-mixing burner and heat source machine equipped with former |
| CN2554481Y (en) * | 2002-07-02 | 2003-06-04 | 彭贤正 | High-efficient smokeless combustion-chamber device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1987199A (en) | 2007-06-27 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Gonghuan Energy Technology Co., Ltd. Assignor: Institute of Engineering Thermophysics, Chinese Academy of Sciences Contract fulfillment period: 2007.6.3 to 2012.6.2 Contract record no.: 2008990001396 Denomination of invention: Gas burning premixing high speed burning nozzle Granted publication date: 20081203 License type: Exclusive license Record date: 2008.12.9 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.6.3 TO 2012.6.2; CHANGE OF CONTRACT Name of requester: BEIJING GONGHUAN ENERGY TECHNOLOGY CO., LTD. Effective date: 20081209 |
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Effective date of registration: 20170825 Address after: 100080 No. 15, No. three, Zhongguancun Road, Haidian District, Beijing, No. seventy-fifth, 106 Patentee after: BEIJING ZHONGKE ZHONGNENG TECHNOLOGY CO., LTD. Address before: 100080 No. 12, Zhongguancun Road, Beijing, Haidian District Patentee before: Institute of Engineering Thermophysics, Chinese Academy of Sciences |
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| TR01 | Transfer of patent right |
Effective date of registration: 20171227 Address after: R & D center 9 No. 421000 Hunan province Hengyang City Baishazhou Industrial Park, Yanfeng District Industrial Avenue, room 512 Patentee after: Hengyang Zhongke green nurseries Technology Co., Ltd. Address before: 100080 No. 15, No. three, Zhongguancun Road, Haidian District, Beijing, No. seventy-fifth, 106 Patentee before: BEIJING ZHONGKE ZHONGNENG TECHNOLOGY CO., LTD. |
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Effective date of registration: 20190304 Address after: 238000 Huashan Service Center, Bantang Road, Chaohu Economic Development Zone, Hefei, Anhui Province Patentee after: Hefei Coal Gasification Technology Co., Ltd. Address before: Room 512, R&D Center, No. 9 Industrial Avenue, Baishazhou Industrial Park, Yanfeng District, Hengyang City, Hunan Province Patentee before: Hengyang Zhongke green nurseries Technology Co., Ltd. |