CN103672883B - Grid type swirl burner - Google Patents
Grid type swirl burner Download PDFInfo
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- CN103672883B CN103672883B CN201310709667.4A CN201310709667A CN103672883B CN 103672883 B CN103672883 B CN 103672883B CN 201310709667 A CN201310709667 A CN 201310709667A CN 103672883 B CN103672883 B CN 103672883B
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Abstract
Provided is a grid type swirl burner. Most of swirl burners applied to coal-fired boilers have the problems that adaptability of cola types is not wide enough and the discharge amount of nitric oxides is high, and changes of the Harbin boiler factory to continuously research and develop swirl pulverized coal burners which are suitable for the coal types and low in discharge amount of nitric oxides. The grid type swirl burner is composed of a primary air pipe (1), wherein a grid type combustion stabilization device (2) is arranged at a jet nozzle of the primary air pipe, the primary air pipe is connected with a pulverized coal inlet elbow (3), a crescent-shaped check block (4) is arranged inside the pulverized coal inlet elbow, an inner secondary air pipe (5) is arranged outside the primary air pipe, an outer secondary air pipe (6) is arranged outside the inner secondary air pipe, the inner secondary air pipe is connected with an inner secondary air swirler (7), and the outer secondary air pipe is connected with an outer secondary air swirler (8). The grid type swirl burner is used for swirl burners.
Description
Technical field：
The present invention relates to a kind of grid type swirl burner.
Background technology：
The turbulent burner that coal-burning boiler is applied, mostly exist coal adaptability not extensively, discharged nitrous oxides
Measure higher problem, the change of domestic and international electricity market requires Harbin Boiler Plant constantly to research and develop suitable these coals, simultaneously nitrogen
The low vortex burner of oxide emissions.
Content of the invention：
It is an object of the invention to provide a kind of grid type swirl burner.
Above-mentioned purpose is realized by following technical scheme：
A kind of grid type swirl burner, its composition includes:Primary air piping, the nozzle of described primary air piping is provided with
Grid type stabilizer, described primary air piping is connected with coal powder entrance elbow, is provided with the moon in described coal powder entrance elbow
Thread form block, is provided with inner second air pipe outside described primary air piping, is provided with outer secondary outside described inner second air pipe
Airduct, described inner second air pipe is connected with inner second air cyclone, and described outer second air pipe is with outer second air cyclone even
Connect, wear-resistant ceramic is pasted with described primary air piping inwall and described grid type stabilizer, described inner second air pipe
It is concentric circular passage with described outer second air pipe.
The method of described grid type swirl burner burning, in turbulent burner, the air of burning is divided into three strands,
I.e. First air, inner second air and outer second air；First air is provided by primary air fan, enters in coal pulverizer and carries coal dust, forms one
Secondary wind powder mixture, sends into burner hearth through burner inlet elbow and primary air piping；The same inner second air of breeze airflow, outer second air are joined
Close it is ensured that maintaining a stable flame at burner throat；Bellows on water-cooling wall before and after burner hearth, to every
Individual burner supply inner second air and outer second air；Inner second air and outer second air pass through concentric circular passage in burner,
Enter burner hearth in the different phase of burning, contribute to NOXThe reduction of total amount and the after-flame of fuel；The inner second air gear of burner
Plate is in order to adjust the ratio of the inner second air amount of each burner；The adjusting lever of baffle plate passes through combustor panel in combustor external
The position of regulating fender；Outer second air and inner second air produce necessary rotation by respective cyclone；Burner outer secondary
Wind adjusts the tangential swirl intensity of outer second air by connecting rod；The swirl strength of inner second air then passes through to adjust cyclone
Axial location is adjusted；For preventing from wearing and tearing, in the grid pasting wear resistant ceramic of primary air piping inwall and burner nozzle.
Beneficial effect：
1. the present invention is suitable for coal extensively, includings bituminous coal, meager coal, brown coal, have ignition stably, low-load combustion-stabilizing
Ability is strong, high combustion efficiency, NOXDischarge low advantage, there is good development prospect.
The present invention not only solves the problems, such as that domestic power plant uses coal complexity, and has widened turbulent burner further
Economy and environmental protection characteristic, possess good adaptability and market potential, be domestic initiation, product advanced in the world.
According to the fire behaviour of coal, the present invention suitably adjusts burner nozzle structure, installs grid additional in primary wind and powder spout
Formula stabilizer, the size of grid is according to the catching fire of coal, surely combustion, low nitrogen characteristic are designed.
The present invention be directed to electricity market requires, the exploitation coal-fired pot that coal adaptability is extensive, nitrogen oxide emission is low
Stove turbulent burner；The combustion technology that exploitation has independent intellectual property right is also that my company's the type boiler moves towards international city simultaneously
The needs of field.Advanced in performance low NOXBurner is the Main Means of denitration in the stove, has wide market prospect, is boiler
Important performance guarantee means, are to develop domestic, international market important technology guarantee.
Brief description：
Accompanying drawing 1 is the structural representation of the present invention.
Accompanying drawing 2 is the left view of accompanying drawing 1.
Specific embodiment：
Embodiment 1：
A kind of grid type swirl burner, its composition includes:Primary air piping 1, the nozzle of described primary air piping is pacified
Equipped with grid type stabilizer 2, described primary air piping is connected with coal powder entrance elbow 3, in described coal powder entrance elbow
Crescent block 4 is installed, inner second air pipe 5 is installed outside described primary air piping, outside described inner second air pipe
Outer second air pipe 6 is installed, described inner second air pipe is connected with inner second air cyclone 7, described outer second air pipe with
Outer second air cyclone 8 connects.
Embodiment 2：
Grid type swirl burner according to embodiment 1, in described primary air piping inwall and described grid
Wear-resistant ceramic is pasted with formula stabilizer, described inner second air pipe and described outer second air pipe are concentric circular passages.
Embodiment 3：
Grid type swirl burner described in embodiment 1 or 2, in turbulent burner, the air of burning is divided into
Three strands, i.e. First air, inner second air and outer second air.First air is provided by primary air fan, enters in coal pulverizer and carries coal dust, shape
Become primary wind and powder mixture, send into burner hearth through burner inlet elbow and primary air piping.The same inner second air of breeze airflow, outer secondary
Wind cooperation is it is ensured that maintaining a stable flame at burner throat.Bellows on water-cooling wall before and after burner hearth,
Supply inner second air and outer second air to each burner.Inner second air and outer second air pass through concentric annular in burner and lead to
Road, enters burner hearth in the different phase of burning, contributes to NOXThe reduction of total amount and the after-flame of fuel.The inner second air of burner
Baffle plate is in order to adjust the ratio of the inner second air amount of each burner.The adjusting lever of baffle plate passes through combustor panel can burn
The position of the outside regulating fender of device.Outer second air and inner second air produce necessary rotation by respective cyclone.Burner
Outer second air can adjust the tangential swirl intensity of outer second air by connecting rod.The swirl strength of inner second air then passes through to adjust
The axial location of section cyclone is adjusted.For preventing from wearing and tearing, paste resistance in the grid of primary air piping inwall and burner nozzle
Mill pottery, its service life is less pasted pottery and is increased substantially.
Claims (1)
1. a kind of grid type swirl burner, its composition includes:Primary air piping, the nozzle of described primary air piping is provided with grid
Form stabilizer, the size of grid is according to the catching fire of coal, surely combustion, low-carbon (LC) characteristic are designed, described primary air piping and coal
Powder inlet elbow connects, and is provided with crescent block in described coal powder entrance elbow, installs outside described primary air piping
There is inner second air pipe, outer second air pipe, described inner second air pipe and inner second air are installed outside described inner second air pipe
Cyclone connects, and described outer second air pipe is connected with outer second air cyclone, described inner second air pipe and described outer two
Secondary airduct is concentric circular passage；The method of described grid type swirl burner burning, is characterized in that:In swirl flow combustion
In device, the air of burning is divided into three strands, i.e. First air, inner second air and outer second air；First air is provided by primary air fan, enters
Enter and in coal pulverizer, carry coal dust, form primary wind and powder mixture, send into burner hearth through burner inlet elbow and primary air piping；Coal dust
The same inner second air of air-flow, outer second air cooperation are it is ensured that maintaining a stable flame at burner throat；Positioned at stove
Bellows on water-cooling wall before and after thorax, supply inner second air and outer second air to each burner；Inner second air and outer second air lead to
Cross concentric circular passage in burner, enter burner hearth in the different phase of burning, contribute to NOXThe reduction of total amount and fuel
After-flame；The inner second air baffle plate of burner is in order to adjust the ratio of the inner second air amount of each burner；The adjusting lever of baffle plate is worn
Cross the position in combustor external regulating fender for the combustor panel；Outer second air and inner second air must by the generation of respective cyclone
The rotation wanted；The outer second air of burner adjusts the tangential swirl intensity of outer second air by connecting rod；The rotation of inner second air
Intensity of flow is then adjusted by adjusting the axial location of cyclone；For preventing from wearing and tearing, in primary air piping inwall and burner spray
The grid pasting wear resistant ceramic of mouth, according to the fire behaviour of coal, suitably adjustment burner nozzle structure, widen eddy flow further
The economy of burner and environmental protection characteristic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310709667.4A CN103672883B (en) | 2013-12-21 | 2013-12-21 | Grid type swirl burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310709667.4A CN103672883B (en) | 2013-12-21 | 2013-12-21 | Grid type swirl burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103672883A CN103672883A (en) | 2014-03-26 |
| CN103672883B true CN103672883B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310709667.4A Active CN103672883B (en) | 2013-12-21 | 2013-12-21 | Grid type swirl burner |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016158081A1 (en) * | 2015-03-31 | 2016-10-06 | 三菱日立パワーシステムズ株式会社 | Combustion burner and boiler provided therewith |
| MX2017009761A (en) | 2015-03-31 | 2017-12-11 | Mitsubishi Hitachi Power Sys | Combustion burner and boiler. |
| JP6642912B2 (en) | 2015-09-11 | 2020-02-12 | 三菱日立パワーシステムズ株式会社 | Combustion burner and boiler provided with the same |
| CN105650631B (en) * | 2016-03-09 | 2019-08-09 | 南阳市亚龙筑路机械制造有限公司 | A kind of energy saving and environment friendly coal dust burner |
| CN106918049A (en) * | 2017-05-05 | 2017-07-04 | 郑州大学 | Gas fired-boiler air stage feeding device |
| CN107350094B (en) * | 2017-08-07 | 2023-05-30 | 云南昆船机械制造有限公司 | Self-rotational flow tailing desliming equipment and method |
| CN110836367A (en) * | 2019-11-26 | 2020-02-25 | 哈尔滨锅炉厂有限责任公司 | Wide-load biomass cyclone burner suitable for biomass coupling coal-fired boiler |
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| CN101290118A (en) * | 2008-06-04 | 2008-10-22 | 杭州意能节能技术有限公司 | Low NOx DC micro-oil coal powder burner |
| CN101988698A (en) * | 2009-07-31 | 2011-03-23 | 戴卫军 | Cyclone pulverized coal burner |
| CN102102872A (en) * | 2011-02-28 | 2011-06-22 | 哈尔滨锅炉厂有限责任公司 | Lignite rotational flow combustor |
| CN202561736U (en) * | 2012-05-16 | 2012-11-28 | 泰山中联水泥有限公司 | Flame stabilizer for pulverized coal burner |
| CN202598507U (en) * | 2012-06-07 | 2012-12-12 | 哈尔滨锅炉厂有限责任公司 | Novel steady burning tooth for lignite swirling burner |
| CN203215667U (en) * | 2013-04-17 | 2013-09-25 | 嘉峪关大友企业公司轧辊厂 | Vortex burner |
| CN203628644U (en) * | 2013-12-21 | 2014-06-04 | 哈尔滨锅炉厂有限责任公司 | Grid type turbulent burner |
-
2013
- 2013-12-21 CN CN201310709667.4A patent/CN103672883B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290118A (en) * | 2008-06-04 | 2008-10-22 | 杭州意能节能技术有限公司 | Low NOx DC micro-oil coal powder burner |
| CN101988698A (en) * | 2009-07-31 | 2011-03-23 | 戴卫军 | Cyclone pulverized coal burner |
| CN102102872A (en) * | 2011-02-28 | 2011-06-22 | 哈尔滨锅炉厂有限责任公司 | Lignite rotational flow combustor |
| CN202561736U (en) * | 2012-05-16 | 2012-11-28 | 泰山中联水泥有限公司 | Flame stabilizer for pulverized coal burner |
| CN202598507U (en) * | 2012-06-07 | 2012-12-12 | 哈尔滨锅炉厂有限责任公司 | Novel steady burning tooth for lignite swirling burner |
| CN203215667U (en) * | 2013-04-17 | 2013-09-25 | 嘉峪关大友企业公司轧辊厂 | Vortex burner |
| CN203628644U (en) * | 2013-12-21 | 2014-06-04 | 哈尔滨锅炉厂有限责任公司 | Grid type turbulent burner |
Also Published As
| Publication number | Publication date |
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| CN103672883A (en) | 2014-03-26 |
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