CN102102872A - Lignite rotational flow combustor - Google Patents
Lignite rotational flow combustor Download PDFInfo
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- CN102102872A CN102102872A CN2011100477498A CN201110047749A CN102102872A CN 102102872 A CN102102872 A CN 102102872A CN 2011100477498 A CN2011100477498 A CN 2011100477498A CN 201110047749 A CN201110047749 A CN 201110047749A CN 102102872 A CN102102872 A CN 102102872A
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- air pipe
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Abstract
The invention provides a lignite rotational flow combustor. Some boiler rotational flow combustors have the problems such as high NOx emission, spout coking, primary air pipe abrasion and the like. The lignite rotational flow combustor is designed for avoiding the phenomenon of higher NOx emission caused by incapability of realizing stronger classified combustion due to serious coking. The lignite rotational flow combustor provided by the invention comprises a center air pipe (1), wherein a primary air pipe (2) is sleeved at the outer side of the center air pipe, and the primary air pipe is internally provided with a powdered coal concentrator (3); the outer side of the primary air pipe is connected with a combustor front plate (4), an internal secondary air box (5), an adjustable internal secondary air cyclone (6), an internal secondary air pipe (16) and an external secondary air flaring (7); and the internal secondary air pipe is connected with an adjustable external secondary air cyclone and an external secondary air pipe (17). The lignite rotational flow combustor provided by the invention is a rotational flow combustor used in a lignite boiler.
Description
Technical field:
Invention relates to a kind of brown coal turbulent burner that is used for boiler combustion system.
Background technology:
Part boiler turbulent burner exists NOx discharging height, spout coking, a problem such as airduct wearing and tearing.Can not realize that for fear of serious coking thereby bigger fractional combustion causes the higher phenomenon of NOx discharging, makes the present invention.
Summary of the invention:
The purpose of invention provides a kind of brown coal turbulent burner, life-span height, flame stabilization, has guaranteed near burner throat place stable flame.
Above-mentioned purpose realizes by following technical scheme:
The brown coal turbulent burner, its composition comprises: central air hose, once airduct is overlapped in the described central air hose outside, pulverized coal concentrator is equipped with in a described airduct inboard, the described airduct outside connects burner header board, interior secondary air box, adjustable interior secondary wind cyclone, interior secondary air channel and the enlarging of outer secondary wind, and described interior secondary air channel connects adjustable outer secondary wind cyclone and outer secondary air channel.
Described brown coal turbulent burner, the outer wall of described central air hose is installed wearing layer, and described central air hose one end has steady combustion tooth and Venturi tube, and described airduct one end has steady combustion ring and the enlarging of interior secondary wind.
Described brown coal turbulent burner, a described airduct comprises the coal powder entrance elbow, a described airduct inwall and described coal powder entrance elbow interior wall all have wearing layer, the secondary air box upper end has interior secondary windshield plate in described, the adjusting lever of secondary windshield plate passes the position that the burner panel is also externally adjusted baffle plate in described, described outer secondary wind is by the swirl strength of the outer secondary wind of connecting rod adjustment of adjustable outer secondary wind cyclone, and the swirl strength of interior secondary wind is then adjusted by the axial location of regulating cyclone.
The beneficial effect of the invention:
1. invention has flameholding, and the low-load combustion-stabilizing ability is strong, the efficiency of combustion height, and NOx discharges advantages such as low, can prevent the spout coking effectively.Has good development prospect.This burner will achieve the desired result.
The invention breeze airflow cooperates with interior secondary wind, outer secondary wind, has guaranteed keeping a stable flame near the burner throat place.
Every burner of invention also has one center wind.With stabilize oil flame, prevent oily flame impingement central air hose and oil burner cyclone to an amount of center wind of burner central supply, also play the effect that prevents the burner coking simultaneously.
Invention has high-abrasive material at central air hose outer wall and an airduct inwall, and improve several times its service life than before.An elegance direct current, so wind of burner inlet elbow adopts not iso-diameter elbow and has wear-resistant material layer.Owing to be space structure, design and manufacturing are all relatively more difficult.This structure is initiative.
Invention is at electricity market coal requirement, the vortex burner that exploitation is fit to the burning brown coal has not only solved the problem that domestic power plant uses brown coal, and further widened the scope of application of vortex burner coal, have good and economic, adaptability and market potential, be domestic initiation, product advanced in the world.
. in brown coal turbulent burner of the present invention, the air of burning is divided into four strands, i.e. wind, interior secondary wind, outer secondary wind and a center wind.One time wind is provided by primary air fan, enters and carries coal dust in the coal pulverizer, forms the primary wind and powder mixture, sends into burner hearth through burner inlet elbow and an airduct.Middle front part at a close burner hearth of airduct is provided with pulverized coal concentrator, before entering burner hearth at breeze airflow it is concentrated.Breeze airflow cooperates with interior secondary wind, outer secondary wind, has guaranteed keeping a stable flame near the burner throat place.
Be positioned at the bellows on the water-cooling wall before and after the burner hearth, in each burner is supplied with secondary wind with outside secondary wind.
Interior secondary wind and outer secondary wind enter burner hearth by concentric circular passage in the burner in the different phase of burning, and help the reduction of NOx total amount and the after-flame of fuel.The interior secondary windshield plate of burner is in order to the ratio of the secondary air flow of regulating each burner.The adjusting lever of baffle plate passes the position that the burner panel can be adjusted baffle plate at combustor external.Outer secondary wind and interior secondary wind produce necessary rotation by cyclone separately.The outer secondary wind of burner can be adjusted the swirl strength of outer secondary wind by connecting rod.The swirl strength of interior secondary wind is then adjusted by the axial location of regulating cyclone.
Description of drawings:
Accompanying drawing 1 is the structural representation of this product.
Accompanying drawing 2 is right views of accompanying drawing 1.
The specific embodiment:
Embodiment 1:
A kind of brown coal turbulent burner, its composition comprises: central air hose 1, once airduct 2 is overlapped in the described central air hose outside, pulverized coal concentrator 3 is equipped with in a described airduct inboard, the described airduct outside connects burner header board 4, interior secondary air box 5, adjustable interior secondary wind cyclone 6, interior secondary air channel 16 and outer secondary wind enlarging 7, and described interior secondary air channel connects adjustable outer secondary wind cyclone and outer secondary air channel 17.
Embodiment 2:
Embodiment 1 described brown coal turbulent burner, described central air hose 2 one ends have air port, center 11, and the described central air hose other end has center wind inlet 12, and the outer wall of described central air hose is installed high-abrasive material.Described central air hose 1 one ends are equipped with steady combustion tooth 8 and Venturi tube 9, and described airduct 2 one ends are equipped with steady combustion ring 10 and interior secondary wind enlarging 7.
Embodiment 3:
Embodiment 1 described brown coal turbulent burner, a described airduct comprise coal powder entrance elbow and a wind inlet, and a described airduct inwall and described coal powder entrance elbow interior wall all have wear-resistant material layer.
Embodiment 4:
Embodiment 1 described brown coal turbulent burner, described adjustable outer secondary wind cyclone has outer overfire air port 13 and interior overfire air port 14.
Embodiment 5:
Embodiment 1 described brown coal turbulent burner, secondary windshield plate 15 is equipped with in described secondary air box upper end.
Claims (3)
1. brown coal turbulent burner, its composition comprises: central air hose, it is characterized in that: once airduct is overlapped in the described central air hose outside, pulverized coal concentrator is equipped with in a described airduct inboard, the described airduct outside connects burner header board, interior secondary air box, adjustable interior secondary wind cyclone, interior secondary air channel and the enlarging of outer secondary wind, and described interior secondary air channel connects adjustable outer secondary wind cyclone and outer secondary air channel.
2. brown coal turbulent burner according to claim 1, it is characterized in that: the outer wall of described central air hose is installed wearing layer, described central air hose one end has steady combustion tooth and Venturi tube, and described airduct one end has steady combustion ring and the enlarging of interior secondary wind.
3. brown coal turbulent burner according to claim 1 and 2, it is characterized in that: a described airduct comprises the coal powder entrance elbow, a described airduct inwall and described coal powder entrance elbow interior wall all have wearing layer, the secondary air box upper end has interior secondary windshield plate in described, the adjusting lever of secondary windshield plate passes the position that the burner panel is also externally adjusted baffle plate in described, described outer secondary wind is by the swirl strength of the outer secondary wind of connecting rod adjustment of adjustable outer secondary wind cyclone, and the swirl strength of interior secondary wind is then adjusted by the axial location of regulating cyclone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110047749.8A CN102102872B (en) | 2011-02-28 | 2011-02-28 | Brown coal turbulent burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110047749.8A CN102102872B (en) | 2011-02-28 | 2011-02-28 | Brown coal turbulent burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102102872A true CN102102872A (en) | 2011-06-22 |
| CN102102872B CN102102872B (en) | 2015-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110047749.8A Active CN102102872B (en) | 2011-02-28 | 2011-02-28 | Brown coal turbulent burner |
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| CN (1) | CN102102872B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434878A (en) * | 2011-09-09 | 2012-05-02 | 华中科技大学 | Three-layer secondary air low nitrogen oxide swirling burner |
| CN102506425A (en) * | 2011-09-28 | 2012-06-20 | 哈尔滨工业大学 | Central-feeding swirling pulverized coal burner with central air pipeline |
| CN103672883A (en) * | 2013-12-21 | 2014-03-26 | 哈尔滨锅炉厂有限责任公司 | Grid type swirl burner |
| CN106196041A (en) * | 2016-07-05 | 2016-12-07 | 哈尔滨锅炉厂有限责任公司 | Multiple stage separation annular return formula axial rotational flow burner |
| CN113803715A (en) * | 2021-10-28 | 2021-12-17 | 西安热工研究院有限公司 | System for solving problem of slag bonding of surrounding water-cooled wall of cyclone burner |
Citations (5)
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| US4602571A (en) * | 1984-07-30 | 1986-07-29 | Combustion Engineering, Inc. | Burner for coal slurry |
| CN1155052A (en) * | 1996-11-18 | 1997-07-23 | 浙江大学 | Wide-regulatior-ratio multiple-coal-kind thick-thin-phase coal powder cyclone burner |
| CN101290119A (en) * | 2008-06-04 | 2008-10-22 | 杭州意能节能技术有限公司 | Low NOx cyclone micro-oil coal powder burner |
| CN201680364U (en) * | 2010-04-06 | 2010-12-22 | 山西蓝天环保设备有限公司 | Efficient low NOx pulverized coal burner for small and medium-sized industrial boilers |
| CN202008139U (en) * | 2011-02-28 | 2011-10-12 | 哈尔滨锅炉厂有限责任公司 | Lignite cyclone burner |
-
2011
- 2011-02-28 CN CN201110047749.8A patent/CN102102872B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4602571A (en) * | 1984-07-30 | 1986-07-29 | Combustion Engineering, Inc. | Burner for coal slurry |
| CN1155052A (en) * | 1996-11-18 | 1997-07-23 | 浙江大学 | Wide-regulatior-ratio multiple-coal-kind thick-thin-phase coal powder cyclone burner |
| CN101290119A (en) * | 2008-06-04 | 2008-10-22 | 杭州意能节能技术有限公司 | Low NOx cyclone micro-oil coal powder burner |
| CN201680364U (en) * | 2010-04-06 | 2010-12-22 | 山西蓝天环保设备有限公司 | Efficient low NOx pulverized coal burner for small and medium-sized industrial boilers |
| CN202008139U (en) * | 2011-02-28 | 2011-10-12 | 哈尔滨锅炉厂有限责任公司 | Lignite cyclone burner |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434878A (en) * | 2011-09-09 | 2012-05-02 | 华中科技大学 | Three-layer secondary air low nitrogen oxide swirling burner |
| CN102506425A (en) * | 2011-09-28 | 2012-06-20 | 哈尔滨工业大学 | Central-feeding swirling pulverized coal burner with central air pipeline |
| CN102506425B (en) * | 2011-09-28 | 2015-03-11 | 哈尔滨工业大学 | Central-feeding swirling pulverized coal burner with central air pipeline |
| CN103672883A (en) * | 2013-12-21 | 2014-03-26 | 哈尔滨锅炉厂有限责任公司 | Grid type swirl burner |
| CN103672883B (en) * | 2013-12-21 | 2017-02-22 | 哈尔滨锅炉厂有限责任公司 | Grid type swirl burner |
| CN106196041A (en) * | 2016-07-05 | 2016-12-07 | 哈尔滨锅炉厂有限责任公司 | Multiple stage separation annular return formula axial rotational flow burner |
| CN113803715A (en) * | 2021-10-28 | 2021-12-17 | 西安热工研究院有限公司 | System for solving problem of slag bonding of surrounding water-cooled wall of cyclone burner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102102872B (en) | 2015-10-07 |
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