CN204611801U - Air preheater dust stratification automatic clearing apparatus - Google Patents
Air preheater dust stratification automatic clearing apparatus Download PDFInfo
- Publication number
- CN204611801U CN204611801U CN201520178224.1U CN201520178224U CN204611801U CN 204611801 U CN204611801 U CN 204611801U CN 201520178224 U CN201520178224 U CN 201520178224U CN 204611801 U CN204611801 U CN 204611801U
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- Prior art keywords
- air preheater
- dust stratification
- clearing apparatus
- pipeline
- grey motor
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Abstract
The utility model relates to a kind of deashing device in electricity power field of boilers, specifically relates to a kind of air preheater dust stratification automatic clearing apparatus.Technical scheme: comprise air preheater, it is characterized in that: be connected respectively with cold junction in the hot junction of air preheater and to blow grey motor, one tunnel of blowing grey motor connects the pipeline introduced from Late reworking outlet, pipeline is arranged and blows grey vapour source decompressor, another road of blowing grey motor connects high pressure washing waterpipe, and high pressure washing waterpipe arranges high-pressure pump.Beneficial effect: adjusted by the method for operation after the denitration of boiler liquefied ammonia, thoroughly can be eliminated the serious dust stratification of air preheater, improve production environment, improve unit safety operation level, reduce air-introduced machine power consumption, ensures that unit safety operation improves unit efficiency.
Description
Technical field
The utility model relates to a kind of deashing device in electricity power field of boilers, specifically relates to a kind of air preheater dust stratification automatic clearing apparatus.
Background technology
Power plant commonly uses liquefied ammonia catalytic reduction method and the decompose nitrogen oxides in flue gas is become nitrogen and water, to reach the object of denitrogenation, but the NH escaped
3with SO
3meet water and generate liquid ammonium sulfate; In addition because the water vapour content in flue gas after liquefied ammonia denitration increases, make air preheater dust stratification serious, the autumn that especially environment temperature is lower, winter, had a strong impact on the safety and economic operation of unit.
Utility model content
The purpose of this utility model is the deficiency existed for prior art, through company research staff effort, develops high, the time saving and energy saving and air preheater dust stratification automatic clearing apparatus that ash-removal effect is good of a kind of automaticity.
Technical scheme: comprise air preheater, it is characterized in that: be connected respectively with cold junction in the hot junction of air preheater and to blow grey motor, one tunnel of blowing grey motor connects the pipeline introduced from Late reworking outlet, pipeline is arranged and blows grey vapour source decompressor, another road of blowing grey motor connects high pressure washing waterpipe, and high pressure washing waterpipe arranges high-pressure pump.
Technique scheme also can be improved to: the described pipeline introduced from Late reworking outlet connects and blows grey motor, after extend drain pipe again.
Beneficial effect: adjusted by the method for operation after the denitration of boiler liquefied ammonia, thoroughly can be eliminated the serious dust stratification of air preheater, improve production environment, improve unit safety operation level, reduce air-introduced machine power consumption, ensures that unit safety operation improves unit efficiency.
Accompanying drawing explanation
Accompanying drawing 1 is the annexation schematic block diagram of the present embodiment.
Detailed description of the invention
With reference to accompanying drawing 1, air preheater dust stratification automatic clearing apparatus comprises a pair air preheater A, B, be connected respectively with cold junction in the hot junction of a pair air preheater A, B and to blow grey motor 3, one tunnel of blowing grey motor 3 connects the pipeline 1 introduced from Late reworking outlet, pipeline is arranged and blows grey vapour source decompressor 2, another road of blowing grey motor 3 connects high pressure washing waterpipe 6, high pressure washing waterpipe 6 is arranged high-pressure pump 5; The described pipeline 1 introduced from Late reworking outlet connects and blows grey motor 3, after extend drain pipe 4 again.
Be in operation and drop into air preheater in time according to air preheater gateway pressure reduction and blow ash, interruption can be blown ash according to pressure reduction situation of change when blowing ash and change into and blow ash continuously, shorten if desired and blow ash interval time; Input wants abundant heating coil hydrophobic before blowing ash, drops into when ensureing that drain temperature is more than 200 DEG C as far as possible again, avoids moist steam to spray into aggravation clogging phenomenon and occurs; Control First air, secondary air flow is not excessive at zone of reasonableness, avoid the too cooling of cold section of air preheater; Running to ensure that exhaust gas temperature is more than flue gas dew point lower than dropping into steam air heater when 5 DEG C in environment temperature especially, avoiding steam to condense on air preheater increasing the weight of air preheater dust stratification and smoke condensation causes air preheater to corrode; Run to reduce unit heat loss higher than stopping steam air heater when 5 DEG C in environment temperature; In addition, controlling denitration outlet ammonia escapement ratio, make it be less than 3ppm, can effectively prevent the liquid ammonium sulfate of viscosity from producing, having positive effect to improving the stifled grey problem of cold section of air preheater.
Claims (2)
1. air preheater dust stratification automatic clearing apparatus, comprise air preheater, it is characterized in that: be connected respectively with cold junction in the hot junction of air preheater and to blow grey motor, one tunnel of blowing grey motor connects the pipeline introduced from Late reworking outlet, pipeline is arranged and blows grey vapour source decompressor, another road of blowing grey motor connects high pressure washing waterpipe, and high pressure washing waterpipe arranges high-pressure pump.
2. air preheater dust stratification automatic clearing apparatus according to claim 1, is characterized in that: the described pipeline introduced from Late reworking outlet connects and blows grey motor, after extend drain pipe again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520178224.1U CN204611801U (en) | 2015-03-27 | 2015-03-27 | Air preheater dust stratification automatic clearing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520178224.1U CN204611801U (en) | 2015-03-27 | 2015-03-27 | Air preheater dust stratification automatic clearing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204611801U true CN204611801U (en) | 2015-09-02 |
Family
ID=53964359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520178224.1U Expired - Fee Related CN204611801U (en) | 2015-03-27 | 2015-03-27 | Air preheater dust stratification automatic clearing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204611801U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706674A (en) * | 2020-07-31 | 2020-09-25 | 大唐滨州发电有限公司 | Radial sealing system of fit contact type air preheater |
-
2015
- 2015-03-27 CN CN201520178224.1U patent/CN204611801U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706674A (en) * | 2020-07-31 | 2020-09-25 | 大唐滨州发电有限公司 | Radial sealing system of fit contact type air preheater |
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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: 20150902 Termination date: 20200327 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |