CN103672883A - Grid type swirl burner - Google Patents
Grid type swirl burner Download PDFInfo
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- CN103672883A CN103672883A CN201310709667.4A CN201310709667A CN103672883A CN 103672883 A CN103672883 A CN 103672883A CN 201310709667 A CN201310709667 A CN 201310709667A CN 103672883 A CN103672883 A CN 103672883A
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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 turbulent burner.
background technology:
the applied turbulent burner of coal-burning boiler, mostly exist the problem that coal adaptability is extensive not, nitrogen oxide emission is higher, the variation of electricity market both at home and abroad requires Harbin Boiler Plant constantly applicable these coals of research and development, the low vortex burner of while nitrogen oxide emission.
summary of the invention:
the object of this invention is to provide a kind of grid type turbulent burner.
above-mentioned object realizes by following technical scheme:
a kind of grid type turbulent burner, its composition comprises: an airduct, the nozzle of a described airduct is provided with grid type stabilizer, a described airduct is connected with coal powder entrance elbow, in described coal powder entrance elbow, crescent block is installed, at a described airduct, inner second air pipe is installed outward, at described inner second air pipe, outer second air pipe is installed outward, described inner second air pipe is connected with inner second air cyclone, and described outer second air pipe is connected with outer second air cyclone.
described grid type turbulent burner is pasted with wear-resistant ceramic on a described airduct inwall and described grid type stabilizer, and described inner second air pipe and described outer second air pipe are concentric circular passages.
in utilizationthe method of the grid type turbulent burner burning of stating,
in turbulent burner, the air of burning is divided into three strands, i.e. wind, inner second air and an outer second air; One time wind is provided by primary air fan, enters in coal pulverizer and carries coal dust, forms primary wind and powder mixture, through burner inlet elbow and an airduct, sends into burner hearth; The same inner second air of breeze airflow, outer second air coordinate, and have guaranteed maintaining a stable flame near burner throat place; Be positioned at the bellows on the water-cooling wall of burner hearth front and back, to each burner, supply with inner second air and outer second air; Inner second air and outer second air, by concentric circular passage in burner, enter burner hearth in the different phase of burning, and contribute to NO x the reduction of total amount and the after-flame of fuel; The inner second air baffle plate of burner is in order to regulate the ratio of the inner second air amount of each burner; The adjusting lever of baffle plate is the position at combustor external regulating fender through burner panel; Outer second air and inner second air produce necessary rotation by cyclone separately; The outer second air of burner is adjusted the tangential swirl intensity of outer second air by connecting rod; The swirl strength of inner second air is by regulating the axial location of cyclone to adjust; For wear prevention, at the grid pasting wear resistant ceramic of airduct inwall and burner nozzle.
beneficial effect:
1. the applicable coal of the present invention is extensive, comprises bituminous coal, meager coal, brown coal, has that ignition is stable, low-load combustion-stabilizing ability is strong, efficiency of combustion is high, NO
x
discharge the advantages such as low, there is good development prospect.
the present invention has not only solved the problem that domestic power plant uses coal complexity, and has further widened economy and the environmental protection characteristic of turbulent burner, possesses good adaptability and market potential, is domestic initiation, product advanced in the world.
according to the fire behaviour of coal, the present invention suitably adjusts burner nozzle structure, at primary wind and powder spout, installs grid type stabilizer additional, and the size of Turbogrid plates is according to the catching fire of coal, surely combustion, low nitrogen characteristic design.
the present invention be directed to electricity market requirement, the coal-burning boiler turbulent burner that exploitation coal adaptability is extensive, nitrogen oxide emission is low; The combustion technology that exploitation has an independent intellectual property right simultaneously Ye Shiwo company the type boiler is moved towards the needs of international market.Advanced in performance low NO
x
burner is the Main Means of denitration in the stove, has wide market prospects, is the important performance guarantee means of boiler, is that exploitation is domestic, the important technology guarantee of international market.
accompanying drawing explanation:
accompanying drawing 1 is structural representation of the present invention.
accompanying drawing 2 is left views of accompanying drawing 1.
the specific embodiment:
embodiment 1:
a kind of grid type turbulent burner, its composition comprises: an airduct 1, the nozzle of a described airduct is provided with grid type stabilizer 2, a described airduct is connected with coal powder entrance elbow 3, in described coal powder entrance elbow, crescent block 4 is installed, at a described airduct, inner second air pipe 5 is installed outward, at described inner second air pipe, outer second air pipe 6 is installed outward, described inner second air pipe is connected with inner second air cyclone 7, and described outer second air pipe is connected with outer second air cyclone 8.
embodiment 2:
according to the grid type turbulent burner described in embodiment 1, on a described airduct inwall and described grid type stabilizer, be pasted with wear-resistant ceramic, described inner second air pipe and described outer second air pipe are concentric circular passages.
embodiment 3:
grid type turbulent burner described in embodiment 1 or 2, in turbulent burner, the air of burning is divided into three strands, i.e. wind, inner second air and an outer second air.One time wind is provided by primary air fan, enters in coal pulverizer and carries coal dust, forms primary wind and powder mixture, through burner inlet elbow and an airduct, sends into burner hearth.The same inner second air of breeze airflow, outer second air coordinate, and have guaranteed maintaining a stable flame near burner throat place.Be positioned at the bellows on the water-cooling wall of burner hearth front and back, to each burner, supply with inner second air and outer second air.Inner second air and outer second air, by concentric circular passage in burner, enter burner hearth in the different phase of burning, and contribute to NO
x
the reduction of total amount and the after-flame of fuel.The inner second air baffle plate of burner is in order to regulate the ratio of the inner second air amount of each burner.The adjusting lever of baffle plate can be in the position of combustor external regulating fender through burner panel.Outer second air and inner second air produce necessary rotation by cyclone separately.The outer second air of burner can be adjusted by connecting rod the tangential swirl intensity of outer second air.The swirl strength of inner second air is by regulating the axial location of cyclone to adjust.For wear prevention, at the grid pasting wear resistant ceramic of airduct inwall and burner nozzle, more do not paste pottery and increase substantially its service life.
Claims (3)
1. a grid type turbulent burner, its composition comprises: an airduct, it is characterized in that: the nozzle of a described airduct is provided with grid type stabilizer, a described airduct is connected with coal powder entrance elbow, in described coal powder entrance elbow, crescent block is installed, at a described airduct, inner second air pipe is installed outward, at described inner second air pipe, outer second air pipe is installed outward, described inner second air pipe is connected with inner second air cyclone, and described outer second air pipe is connected with outer second air cyclone.
2. grid type turbulent burner according to claim 1, is characterized in that: on a described airduct inwall and described grid type stabilizer, be pasted with wear-resistant ceramic, described inner second air pipe and described outer second air pipe are concentric circular passages.
3.
a kind of utilizationthe method of the grid type turbulent burner burning described in claim 1 or 2, is characterized in that:
in turbulent burner, the air of burning is divided into three strands, i.e. wind, inner second air and an outer second air; One time wind is provided by primary air fan, enters in coal pulverizer and carries coal dust, forms primary wind and powder mixture, through burner inlet elbow and an airduct, sends into burner hearth; The same inner second air of breeze airflow, outer second air coordinate, and have guaranteed maintaining a stable flame near burner throat place; Be positioned at the bellows on the water-cooling wall of burner hearth front and back, to each burner, supply with inner second air and outer second air; Inner second air and outer second air, by concentric circular passage in burner, enter burner hearth in the different phase of burning, and contribute to NO x the reduction of total amount and the after-flame of fuel; The inner second air baffle plate of burner is in order to regulate the ratio of the inner second air amount of each burner; The adjusting lever of baffle plate is the position at combustor external regulating fender through burner panel; Outer second air and inner second air produce necessary rotation by cyclone separately; The outer second air of burner is adjusted the tangential swirl intensity of outer second air by connecting rod; The swirl strength of inner second air is by regulating the axial location of cyclone to adjust; For wear prevention, at the grid pasting wear resistant ceramic of airduct inwall and burner nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310709667.4A CN103672883B (en) | 2013-12-21 | 2013-12-21 | Grid type swirl burner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310709667.4A CN103672883B (en) | 2013-12-21 | 2013-12-21 | Grid type swirl burner |
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| CN103672883A true CN103672883A (en) | 2014-03-26 |
| CN103672883B CN103672883B (en) | 2017-02-22 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650631A (en) * | 2016-03-09 | 2016-06-08 | 南阳市亚龙筑路机械制造有限公司 | Energy-saved and environment-friendly pulverized coal combustion device |
| CN106918049A (en) * | 2017-05-05 | 2017-07-04 | 郑州大学 | Gas fired-boiler air stage feeding device |
| CN107250668A (en) * | 2015-03-31 | 2017-10-13 | 三菱日立电力系统株式会社 | Burner and the boiler for possessing the burner |
| CN107350094A (en) * | 2017-08-07 | 2017-11-17 | 云南昆船机械制造有限公司 | Spin current mine tailing desliming device and method |
| US10591154B2 (en) | 2015-03-31 | 2020-03-17 | Mitsubishi Hitachi Power Systems, Ltd. | Combustion burner and boiler |
| US10677457B2 (en) | 2015-09-11 | 2020-06-09 | Mitsubishi Hitachi Power Systems, Ltd. | Combustion burner and boiler equipped with the same |
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| 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 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107250668A (en) * | 2015-03-31 | 2017-10-13 | 三菱日立电力系统株式会社 | Burner and the boiler for possessing the burner |
| US10458645B2 (en) | 2015-03-31 | 2019-10-29 | Mitsubishi Hitachi Power Systems, Ltd. | Combustion burner and boiler provided with same |
| US10591154B2 (en) | 2015-03-31 | 2020-03-17 | Mitsubishi Hitachi Power Systems, Ltd. | Combustion burner and boiler |
| US10677457B2 (en) | 2015-09-11 | 2020-06-09 | Mitsubishi Hitachi Power Systems, Ltd. | Combustion burner and boiler equipped with the same |
| CN105650631A (en) * | 2016-03-09 | 2016-06-08 | 南阳市亚龙筑路机械制造有限公司 | Energy-saved and environment-friendly pulverized coal combustion device |
| 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 |
| CN107350094A (en) * | 2017-08-07 | 2017-11-17 | 云南昆船机械制造有限公司 | Spin current mine tailing desliming device and method |
| 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 |
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| CN103672883B (en) | 2017-02-22 |
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