CN206037027U - Anti -coking coal burner structure with two layers arranged perimeter wind - Google Patents
Anti -coking coal burner structure with two layers arranged perimeter wind Download PDFInfo
- Publication number
- CN206037027U CN206037027U CN201621070059.9U CN201621070059U CN206037027U CN 206037027 U CN206037027 U CN 206037027U CN 201621070059 U CN201621070059 U CN 201621070059U CN 206037027 U CN206037027 U CN 206037027U
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- China
- Prior art keywords
- coke cleaning
- nozzle
- coal
- tuber pipe
- airduct
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Abstract
The utility model discloses an anti -coking coal burner structure with two layers arranged perimeter wind, including tuber pipe, perimeter tuber pipe, coke cleaning wind nozzle, pulverized coal nozzle, coke cleaning tuber pipe and a water -cooling wall, tuber pipe, perimeter tuber pipe and a coke cleaning tuber pipe are set gradually outside to by interior, and the water -cooling wall cup joints on the outer wall of coke cleaning tuber pipe, and pulverized coal nozzle locates the exit position of a tuber pipe, and the exit position of coke cleaning tuber pipe is located to coke cleaning wind nozzle, and during the use, coke cleaning wind nozzle is just to the water -cooling wall, and this structure can effectual coking granule to around the pulverized coal nozzle sweep to be driven, guarantees the boiler pulverized coal burner safe operation.
Description
Technical field
This utility model is related to a kind of coal burner structure, and in particular to a kind of anti-caking with rebuilding surrounding air
Coking coal powder burner structure.
Background technology
Coal burner is the important ingredient of station boiler, and Main Function is that the mixture by coal dust with air sprays
Into burner hearth, by rationalization's stove internally-powered field, realize that coal dust firing releases energy.Boiler coal-ash combustor is typically by once
Wind and secondary wind pipeline and nozzle put in order to arrange in pairs or groups according to one and constitute.First air is the mixture of coal dust and air, is referred to as fired
Material wind, secondary wind composition is hot-air, and effect is auxiliary combustion.
Quasi- east coal is that a kind of reserves are huge, cost of winning is cheap, the coal that combustibility is excellent, with higher volatile matters
With relatively low ash, sulphur content, therefore easily catch fire and after-flame.Additionally, rich in alkali metal class materials such as Na, K in quasi- east coal so that
Its flying dust has extremely strong contamination, causes burner region coking and slagging, affects boiler performance.
Volatile matters are higher using for boiler, during the larger quasi- east coal of alkali metal content, it may occur that ignition time shortens, and catches fire
More nearby there is burning apart from nozzle in the phenomenon of point position reach, i.e. breeze airflow, this will greatly increase burner region
Thermic load so that the metal material of coal nozzle is heated intensification, flows through the pulverized coal particle melted by heat of pipeline and nozzle, adheres to
Around nozzle, coke button is formed.Elapse over time, coke button coverage is more and more wider, thickness of coke layer also gradually increases.Burner
The thick coke button of surrounding cladding will cause the water-cooling wall heat transfer deterioration of burner region, reduce air-cooled effect of the First air to burner
Really, coal nozzle may be caused when serious to block, burner burns, larger threat is brought safely to the operation of unit.
Utility model content
The purpose of this utility model is the shortcoming for overcoming above-mentioned prior art, there is provided a kind of to have rebuilding circumference
The anti-coking pulverized coal burner structure of wind, the structure effectively can carry out purging clearly to the coking granule around coal nozzle
Remove, it is ensured that boiler coal-ash combustor safe operation.
For reaching above-mentioned purpose, the knot of the anti-coking pulverized coal burner with rebuilding surrounding air described in the utility model
Structure includes primary air piping, circumference airduct, coke cleaning wind nozzle, coal nozzle, coke cleaning airduct and water-cooling wall；
Primary air piping, circumference airduct and coke cleaning airduct are set gradually from inside to outside, and water-cooling wall is socketed on the outer of coke cleaning airduct
On wall, located at the exit position of primary air piping, coke cleaning wind nozzle is located at the exit position of coke cleaning airduct to coal nozzle, during use,
Coke cleaning wind nozzle is just to water-cooling wall.
Light-dark separation device is provided with primary air piping, and the outlet of light-dark separation device is connected with the entrance of coal nozzle.
One end of coke cleaning wind tube outlet isShape structure.
This utility model has the advantages that：
Anti-coking pulverized coal burner structure with rebuilding surrounding air described in the utility model in concrete operations,
The coal dust of coal pulverizer output is entered in primary air piping, and Jing coal nozzles are ejected in burner hearth under the drive of wind again, together
When secondary wind enter in circumference airduct and coke cleaning airduct, the secondary wind in circumference airduct is entered as the cooling wind of coal burner
Enter in burner hearth, improve the ability that coal burner resists high temperature deformation, adjust the air-flow around coal nozzle, prevent what is melted
Coal grain stains coal nozzle, and the secondary wind Jing coke cleaning wind nozzle in coke cleaning airduct is blown on the water-cooling wall around coal burner,
Coking granule around purging bug dusting nozzle, it is to avoid fusing coal grain adheres to coking on water-cooling wall, it is ensured that coal burner
Safety movement runs, while ensureing that water-cooling wall heat transfer is effective, simple structure is easy to operate, and practicality is extremely strong.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Wherein, 1 is that primary air piping 1,2 is circumference airduct, 3 is coke cleaning wind nozzle, 4 is coal nozzle, 5 is water-cooling wall, 6 is
Light-dark separation device, 7 are coke cleaning airduct.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described in further detail：
With reference to Fig. 1, the anti-coking pulverized coal burner structure with rebuilding surrounding air described in the utility model includes
Primary air piping 1, circumference airduct 2, coke cleaning wind nozzle 3, coal nozzle 4, coke cleaning airduct 7 and water-cooling wall 5；Primary air piping 1, surrounding air
Pipe 2 and coke cleaning airduct 7 are set gradually from inside to outside, and water-cooling wall 5 is socketed on the outer wall of coke cleaning airduct 7, and coal nozzle 4 is located at one
The exit position of secondary airduct 1, located at the exit position of coke cleaning airduct 7, during use, coke cleaning wind nozzle 3 is just to water for coke cleaning wind nozzle 3
Cold wall 5.
Light-dark separation device 6 is provided with primary air piping 1, the outlet of light-dark separation device 6 is connected with the entrance of coal nozzle 4
It is logical；One end of the outlet of coke cleaning airduct 7 isShape structure.
This utility model specific work process is：
Breeze airflow Jing primary air pipings 1 are entered inside coal burner, pass through pulverized coal injection after passing through light-dark separation device 6
Mouth 4 sprays into ignition in burner hearth, and secondary wind is entered in circumference airduct 2 and coke cleaning airduct 7, wherein secondary in circumference airduct 2
Wind is entered in burner hearth, carries out air cooling to coal burner body, improves the ability that coal burner resists high temperature deformation, adjustment
Air-flow around coal nozzle 4, prevents the coal grain for melting from staiing coal nozzle 4；Secondary wind Jing coke cleaning wind spray in coke cleaning airduct 7
Mouth 3 is ejected on water-cooling wall 5, improves the cooling effect of coal burner, while carrying out to the water-cooling wall 5 of coal burner surrounding
Purging, it is to avoid the fusing coal grain of vortex backrush attaches coking in the region, it is ensured that not burning when coal burner uses quasi- east coal,
Noncoking, with higher reliability.
Claims (3)
1. a kind of anti-coking pulverized coal burner structure with rebuilding surrounding air, it is characterised in that including primary air piping
(1), circumference airduct (2), coke cleaning wind nozzle (3), coal nozzle (4), coke cleaning airduct (7) and water-cooling wall (5)；
Primary air piping (1), circumference airduct (2) and coke cleaning airduct (7) are set gradually from inside to outside, and water-cooling wall (5) is socketed on coke cleaning
On the outer wall of airduct (7), coal nozzle (4) is located at coke cleaning wind located at the exit position of primary air piping (1), coke cleaning wind nozzle (3)
The exit position of pipe (7), during use, coke cleaning wind nozzle (3) is just to water-cooling wall (5).
2. the anti-coking pulverized coal burner structure with rebuilding surrounding air according to claim 1, it is characterised in that
Light-dark separation device (6) is provided with primary air piping (1), the outlet of light-dark separation device (6) is connected with the entrance of coal nozzle (4)
It is logical.
3. the anti-coking pulverized coal burner structure with rebuilding surrounding air according to claim 1, it is characterised in that
One end that coke cleaning airduct (7) is exported is [shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621070059.9U CN206037027U (en) | 2016-09-21 | 2016-09-21 | Anti -coking coal burner structure with two layers arranged perimeter wind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621070059.9U CN206037027U (en) | 2016-09-21 | 2016-09-21 | Anti -coking coal burner structure with two layers arranged perimeter wind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206037027U true CN206037027U (en) | 2017-03-22 |
Family
ID=58296210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621070059.9U Active CN206037027U (en) | 2016-09-21 | 2016-09-21 | Anti -coking coal burner structure with two layers arranged perimeter wind |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206037027U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730969A (en) * | 2018-07-24 | 2018-11-02 | 西安热工研究院有限公司 | A kind of coal powder direct supplying burner structure with adjustable adherent wind |
-
2016
- 2016-09-21 CN CN201621070059.9U patent/CN206037027U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730969A (en) * | 2018-07-24 | 2018-11-02 | 西安热工研究院有限公司 | A kind of coal powder direct supplying burner structure with adjustable adherent wind |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |