CN206094041U - Low nitrogen gap formula combustor - Google Patents
Low nitrogen gap formula combustor Download PDFInfo
- Publication number
- CN206094041U CN206094041U CN201620936547.7U CN201620936547U CN206094041U CN 206094041 U CN206094041 U CN 206094041U CN 201620936547 U CN201620936547 U CN 201620936547U CN 206094041 U CN206094041 U CN 206094041U
- Authority
- CN
- China
- Prior art keywords
- spout
- wind
- low nitrogen
- speed
- air port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model relates to a low nitrogen gap formula combustor has wind spout and overgrate air spout, and the both sides of every wind spout are the overgrate air spout, wherein the overgrate air spout includes high -speed overgrate air spout and intermediate speed overgrate air spout, one time the wind spout is wind spout of intermediate speed, wind spout of intermediate speed overgrate air spout and intermediate speed corresponds, and this gap formula combustor can use with the cooperation of SOFA spout. When guaranteeing higher combustion efficiency, reduce NOx concentration.
Description
Technical field
The utility model is related to a kind of low nitrogen cross-tube burner, belongs to boiler coal-ash combustor technical field.
Background technology
Cross-tube burner of the prior art, as shown in figure 1, a wind snout and overfire air port arranged for interval, one
Secondary wind wind speed is relatively low, and secondary wind wind speed is higher, and coal dust causes coal dust mistake mainly by the Secondary Air jet injection undershoot of two bursts of high speeds
It is early to mix with a large amount of Secondary Airs, so that NOx（Nitrogen oxides）Concentration is higher.
The content of the invention
The purpose of this utility model is higher in order to solve the problems, such as existing cross-tube burner NOx concentration, there is provided one
Low nitrogen cross-tube burner is planted, again the overfire air port to cross-tube burner and a wind snout are designed and arrange,
In the case where pulverized coal flame undershoot is ensured, solve the problems, such as that coal dust mixes too early with a large amount of Secondary Airs, reduce NOx concentration.
The technical solution of the utility model is：Low nitrogen cross-tube burner, with a wind snout and overfire air port, often
The both sides of wind snout of row are overfire air port；Wherein described overfire air port includes that high speed overfire air port and middling speed are secondary
Wind snout a, wind snout is wind snout of middling speed.
Used as the improvement project of above-mentioned technical proposal, wind snout of middling speed overfire air port and middling speed is corresponding.
Above-mentioned low nitrogen cross-tube burner and SOFA（Separate type burnout degree）Spout is used in combination.
The beneficial effects of the utility model are：
1st, high combustion efficiency.Ensure the lower punch power of First air pulverized coal flame by improving First air wind speed, it is ensured that coal dust
In the time of staying of lower hearth burning, coal dust after-flame is unaffected, and boiler flyash carbon content is not raised.
2nd, low nitrogen effect is good.By gap secondary air separating into middling speed and high speed, Secondary Air and the First air of middling speed match, by
It is less in middling speed Secondary Air portion, it is to avoid coal dust the burning initial stage it is too early mix with substantial amounts of Secondary Air, NOx generations
Concentration is relatively low；Meanwhile, the air quantity needed for coal dust after burning is provided by the high speed Secondary Air that share is larger, speed is higher, so as to
Both efficient burnings are reached, makes NOx generate concentration again relatively low.
3rd, with the use of SOFA spouts, the deep-graded of short transverse is realized, the NOx emission concentration of boiler can be made lower,
It is particularly well-suited to the low nitrogen burning transformation of the W flame boiler of low volatile meager coal and anthracitic cross-tube burner.
Description of the drawings
Fig. 1 is the cross-tube burner of prior art；
Fig. 2 is the first layout pattern of low nitrogen cross-tube burner of the present utility model；
Fig. 3 is second layout pattern of low nitrogen cross-tube burner of the present utility model.
Specific embodiment
Low nitrogen cross-tube burner provided by the utility model is described in detail with reference to specific embodiment,
But the utility model is not limited thereto.
Low nitrogen cross-tube burner as shown in Figures 2 and 3, with a wind snout and overfire air port, each column is once
The both sides of wind snout are overfire air port；Wherein described overfire air port includes that high speed overfire air port and middling speed Secondary Air spray
Mouthful, a wind snout is wind snout of middling speed；Wind snout of middling speed overfire air port and middling speed is corresponding.By gap two
Secondary wind is divided into middling speed and high speed, and Secondary Air and the First air of middling speed match, and is ensured once by improving First air wind speed
The lower punch power of wind flame, it is ensured that the time of staying that coal dust burns in lower hearth, to reduce unburned carbon in flue dust；On the one hand, middling speed two
Secondary wind provides Air Quantity Required for the burning of coal dust early stage, and carries coal dust undershoot, on the other hand, due to middling speed Secondary Air portion
It is less, it is to avoid coal dust the burning initial stage it is too early mix with substantial amounts of Secondary Air, the air quantity needed for coal dust after burning is by part
The high speed Secondary Air that volume is larger, speed is higher is provided, and so as to reach both efficient burnings, makes NOx generate concentration again relatively low.
The burner is used in combination with SOFA spouts, and the NOx emission concentration of boiler can be made lower, is particularly well-suited to use low
The low nitrogen burning transformation of the W flame boiler of volatile matter meager coal and anthracitic cross-tube burner.
Claims (2)
1. low nitrogen cross-tube burner, with a wind snout and overfire air port, the both sides of wind snout of each column are secondary
Wind snout；Characterized in that, the overfire air port includes high speed overfire air port and middling speed overfire air port, the First air
Spout is wind snout of middling speed.
2. low nitrogen cross-tube burner as claimed in claim 1, it is characterised in that the middling speed overfire air port with it is described in
Fast First air nozzle exit area correspondence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620936547.7U CN206094041U (en) | 2016-08-25 | 2016-08-25 | Low nitrogen gap formula combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620936547.7U CN206094041U (en) | 2016-08-25 | 2016-08-25 | Low nitrogen gap formula combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206094041U true CN206094041U (en) | 2017-04-12 |
Family
ID=58469016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620936547.7U Active CN206094041U (en) | 2016-08-25 | 2016-08-25 | Low nitrogen gap formula combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206094041U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503626A (en) * | 2020-04-08 | 2020-08-07 | 哈尔滨工业大学 | Gap type exhaust gas post-positioned W flame boiler with secondary air arranged on arch and air distribution method |
-
2016
- 2016-08-25 CN CN201620936547.7U patent/CN206094041U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503626A (en) * | 2020-04-08 | 2020-08-07 | 哈尔滨工业大学 | Gap type exhaust gas post-positioned W flame boiler with secondary air arranged on arch and air distribution method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101832549B (en) | Multi-ejection grading combustion method | |
| CN101050853B (en) | Method for reducing nitrogen oxide of powder coal boiler mixed burning gas fuel | |
| CN101694295B (en) | W-shaped flame boiler disposing aperture type over-fire air spouts on stove arch | |
| CN106247320A (en) | A kind of opposed firing boiler degree of depth denitration combustion method | |
| CN106247321A (en) | A kind of W flame boiler for deeply denitration combustion method | |
| CN102003701B (en) | Low NOx coal dust combustion method and device based on underfire air and overfire air | |
| WO2014067405A1 (en) | Method for reducing nitrogen oxide discharge of biomass circulating fluidized bed boiler | |
| CN106287674A (en) | A kind of tangential boiler degree of depth denitration combustion method | |
| CN102692014A (en) | Combustion system using recycled flue gas to boost overfire air | |
| CN206094041U (en) | Low nitrogen gap formula combustor | |
| CN203907595U (en) | Boiler | |
| CN204593369U (en) | The tertiary air of pulverized-coal fired boiler is made into the device that First air carries out burning | |
| CN101569829B (en) | Method for jointly controlling emission of NOx by utilizing multi-stage bias combustion and fuel reburning | |
| TWI435036B (en) | Combustion system with low nitrogen oxides emission | |
| CN103807869B (en) | A kind of fire air nozzle for boiler and boiler | |
| CN106196020A (en) | The tertiary air of pulverized-coal fired boiler is made into the method and device that First air carries out burning | |
| CN103672863B (en) | The using method of the low nitrogen combustion apparatus of middle warehouse formula pulverized coal carried by hot air boiler | |
| CN208205001U (en) | A kind of low NO with humidifier | |
| CN108679599B (en) | Oxygen-enriched combustion method for mixing pulverized coal with biomass | |
| CN203757696U (en) | Low-nitrogen combustion device of middle storage cabin type hot air powder feeding boiler | |
| CN203628631U (en) | Low-nitrogen combustion device without main secondary air | |
| RU139936U1 (en) | MALOTOXIC VORTEX DUST-BURNER BURNER WITH MODIFIED AEROSMIX FLOW DISCUPLERS | |
| CN107940446B (en) | Large entrainment jet flow over-fire air system and jet method | |
| CN204513364U (en) | Two-part burnout degree system | |
| CN201875692U (en) | Low-NOx pulverized coal burning device based on under-fire air and over-fire air |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |