CN204301044U - Prevent the burnout degree adjust structure of opposed firing boiler slagging scorification - Google Patents
Prevent the burnout degree adjust structure of opposed firing boiler slagging scorification Download PDFInfo
- Publication number
- CN204301044U CN204301044U CN201420585010.1U CN201420585010U CN204301044U CN 204301044 U CN204301044 U CN 204301044U CN 201420585010 U CN201420585010 U CN 201420585010U CN 204301044 U CN204301044 U CN 204301044U
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- CN
- China
- Prior art keywords
- burnout degree
- boiler
- burnout
- slagging scorification
- opposed firing
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Abstract
The utility model discloses a kind of burnout degree adjust structure preventing opposed firing boiler slagging scorification, it comprises the boiler furnace (1) of opposed firing boiler, coal burner (2), burnout degree (3) and water-cooling wall (4), it is characterized in that: burnout degree (3) structure is intermediate dc (5), outside eddy flow (6) structure, the coal burner (2) of more than six and burnout degree (3) with burner hearth center on the symmetrical and front wall being connected to boiler furnace (1) uniformly of the plane of symmetry and rear wall, according to the difference of institute installation site, be positioned at the burnout degree (3) of both sides for side burnout degree (7), being positioned at middle burnout degree (3) is middle burnout degree (8), the intermediate dc (5) of side burnout degree (7) and the adjustable plate aperture of outside eddy flow (6) are 100%, the adjustable plate aperture of the intermediate flow (5) of middle burnout degree (8) is 80%, and the adjustable plate aperture of outside eddy flow (6) is 10%.After implementing by the utility model, under the prerequisite ensureing boiler combustion efficiency and furnace outlet Nox value, effectively prevent the slagging scorification of boiler side wall, ensure safety and the economical operation of boiler.
Description
Technical field
The utility model relates to a kind of burnout degree adjust structure preventing opposed firing boiler slagging scorification, belongs to technical field of boiler combustion.
Background technology
Opposed firing mode boiler is mainly used in the burn higher bituminous coal of fugitive constituent or meager coal, is generally equipped with enhanced ignition-dual register burner, to be liquidated swirl flow combustion by front and back.According to burning ature of coal, in burner hearth, generally do not lay wall with refractory lining, refracto.Opposed firing boiler due to coal dust and Secondary Air mixing better, combustion economization is higher.Fuel design ature of coal, generally can not form serious slagging scorification phenomenon in stove.But due to the anxiety of power coal market, boiler of power plant also exists the changeable problem of ature of coal, actual as-fired coal matter often substantial deviation designing coal quality.For reducing cost of electricity-generating, power plant needs to mix the anthracite burning some.Anthracite due to volatile matter low, burning time is long, causes on boiler furnace flame kernel and moves, and calory burning concentrates on burnout degree position, burner hearth middle and upper part.In this case because wind ability mended by opposed firing boiler furnace side wall, slagging scorification occurs at side wall position mostly, when slagging scorification is serious, after slag melts, trickling is piled up to furnace bottom furnace hopper place, cause boiler cannot normal deslagging, have a strong impact on safe operation of the boiler, boiler forced outage.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of burnout degree adjust structure that can prevent opposed firing boiler slagging scorification, can overcome the deficiencies in the prior art
The technical solution of the utility model is:
Prevent the burnout degree adjust structure of opposed firing boiler slagging scorification, it comprises the boiler furnace of opposed firing boiler, coal burner, burnout degree and water-cooling wall, burnout degree structure is intermediate dc, outer buttons flow structure, the coal burner of more than six and burnout degree with burner hearth center on the symmetrical and front wall being connected to boiler furnace uniformly of the plane of symmetry and rear wall, according to the difference of institute installation site, the burnout degree being positioned at both sides is side burnout degree, and being positioned at middle burnout degree is middle burnout degree; The intermediate dc of side burnout degree and the adjustable plate aperture of outside eddy flow are 100%; The adjustable plate aperture of the intermediate dc of middle burnout degree is 80%, and the adjustable plate aperture of outside eddy flow is 10%.
The above-mentioned burnout degree adjust structure of opposed firing boiler slagging scorification that prevents is, the quantity of burnout degree be 12, front wall and rear wall are all furnished with 6, and the total amount being positioned at the side burnout degree of front wall and rear wall is 8.
Compared with the prior art, the utility model compared with prior art has following beneficial effect:
1, the side burnout degree of sidepiece, direct current wind and Whirl deposite tank, aperture are 100%, and this air distribution mode makes there are enough Secondary Airs by wall side, ensures the reducing atmosphere at side wall place, prevents boiler scaling.
2, middle middle burnout degree, direct current wind aperture 80%, Whirl deposite tank aperture 10%.Direct current wind maintains larger opening, is conducive to ensureing that intermediate combustion device air-flow has stronger rigidity to penetrate combustion centre, ensures combustion economization and reduces NOx content; Whirl deposite tank maintains comparatively small guide vane, pastes wall place oxidizing atmosphere for keeping.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the horizontal direction sectional view installing burnout degree position in boiler furnace;
Fig. 3 is the sectional view of this burnout degree horizontal direction.
Detailed description of the invention
embodiment 1:composition graphs 1, Fig. 2 and 3 pair the utility model are described in detail, and wherein coal burner 2 adopts turbulent burner, are arranged on the water-cooling wall 4 in burner hearth; Burnout degree 3 adopts intermediate dc 5, outside eddy flow 6 structure (as Fig. 3), to be arranged in burner hearth coal burner 2 above on water-cooling wall 4.During layout coal burner 2 and burnout degree 3 with burner hearth center line on the symmetrical and front wall being connected to boiler furnace 1 uniformly of the plane of symmetry and rear wall, according to the difference of present position, the burnout degree 3 of two side positions is divided into side burnout degree 7, and centre position burnout degree 3 is divided into middle burnout degree 8.Need to regulate the adjustable plate aperture of burnout degree 3, intermediate dc 5 and outside eddy flow 6 aperture of side burnout degree 7 are 100% simultaneously, and this air distribution mode makes there are enough Secondary Airs by wall side, ensures the reducing atmosphere at side wall place, prevents boiler scaling.
Intermediate dc 5 aperture 80% of middle burnout degree 8, outside eddy flow 6 aperture 10%.Intermediate dc 5 maintains larger opening, is conducive to ensureing that intermediate combustion device air-flow has stronger rigidity to penetrate combustion centre, ensures combustion economization and reduces NOx content; Outside eddy flow 6 maintains comparatively small guide vane, pastes wall place oxidizing atmosphere for keeping.
After implementing by the utility model, under the prerequisite ensureing boiler combustion efficiency and furnace outlet Nox value, effectively prevent the slagging scorification of boiler side wall, ensure safety and the economical operation of boiler.
Claims (2)
1. one kind prevents the burnout degree adjust structure of opposed firing boiler slagging scorification, it comprises the boiler furnace (1) of opposed firing boiler, coal burner (2), burnout degree (3) and water-cooling wall (4), it is characterized in that: burnout degree (3) structure is intermediate dc (5), outside eddy flow (6) structure, the coal burner (2) of more than six and burnout degree (3) with burner hearth center on the symmetrical and front wall being connected to boiler furnace (1) uniformly of the plane of symmetry and rear wall, according to the difference of institute installation site, be positioned at the burnout degree (3) of both sides for side burnout degree (7), being positioned at middle burnout degree (3) is middle burnout degree (8), the intermediate dc (5) of side burnout degree (7) and the adjustable plate aperture of outside eddy flow (6) are 100%, the adjustable plate aperture of the intermediate flow (5) of middle burnout degree (8) is 80%, and the adjustable plate aperture of outside eddy flow (6) is 10%.
2. the burnout degree adjust structure preventing opposed firing boiler slagging scorification according to claim 1, is characterized in that: the quantity of burnout degree (3) be 12, front wall and rear wall are all furnished with 6, and the total amount being positioned at the side burnout degree (7) of front wall and rear wall is 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585010.1U CN204301044U (en) | 2014-10-11 | 2014-10-11 | Prevent the burnout degree adjust structure of opposed firing boiler slagging scorification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585010.1U CN204301044U (en) | 2014-10-11 | 2014-10-11 | Prevent the burnout degree adjust structure of opposed firing boiler slagging scorification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204301044U true CN204301044U (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420585010.1U Expired - Fee Related CN204301044U (en) | 2014-10-11 | 2014-10-11 | Prevent the burnout degree adjust structure of opposed firing boiler slagging scorification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204301044U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365732A (en) * | 2020-02-28 | 2020-07-03 | 广东电科院能源技术有限责任公司 | Hedging boiler over-fire air self-adaptive control method, system and equipment |
-
2014
- 2014-10-11 CN CN201420585010.1U patent/CN204301044U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365732A (en) * | 2020-02-28 | 2020-07-03 | 广东电科院能源技术有限责任公司 | Hedging boiler over-fire air self-adaptive control method, system and equipment |
| CN111365732B (en) * | 2020-02-28 | 2021-09-14 | 南方电网电力科技股份有限公司 | Hedging boiler over-fire air self-adaptive control method, system and equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20151011 |
|
| EXPY | Termination of patent right or utility model |