CN204629460U - Tertiary air staged combustion device - Google Patents
Tertiary air staged combustion device Download PDFInfo
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- CN204629460U CN204629460U CN201520261537.3U CN201520261537U CN204629460U CN 204629460 U CN204629460 U CN 204629460U CN 201520261537 U CN201520261537 U CN 201520261537U CN 204629460 U CN204629460 U CN 204629460U
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- tertiary air
- air pipeline
- light
- conveyance conduit
- separation device
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Abstract
The utility model relates to boiler tertiary air technical field, be specially a kind of tertiary air staged combustion device, it can reduce the impact on main combustion zone, increase burnt wind ratio, effective reduction NOx emission, it comprises tertiary air conveyance conduit, it is characterized in that, described force 3 wind conveyance conduit connects light-dark separation device arrival end, the described light-dark separation device port of export connects dense side tertiary air pipeline and light side tertiary air pipeline, the main combustion zone of tertiary air pipeline communication, described dense side, tertiary air pipeline communication burnt zone, described light side.
Description
Technical field
The utility model relates to boiler tertiary air technical field, is specially a kind of tertiary air staged combustion device.
Background technology
In domestic 130t/h-410t/h coal-powder boiler, a large number of users adopts warehouse pulverized coal carried by hot air in Ball Mill, its boiler tertiary air rate generally accounts for 20-30%, tertiary air quantity accounting is larger, tertiary air wind speed is high, tertiary air temperature is low, affect coal dust to burn, Coal pulverizer is on the impact of boiler operatiopn large (furnace outlet gas temperature and spray water flux), the more difficult distribution air quantity of Researched of Air Staging Combustion Burning Pulverized Coal simultaneously, secondary air flow accounting is about 40-50%, be difficult to arrange burnt wind, NOx emission is difficult to reduce, similar boiler has tertiary air than the NOx emission increase about 150-200mg/Nm3 arranged without tertiary air, if arrange the burnt wind of larger proportion, boiler coke can be caused, furnace outlet gas temperature raises, load do not gone up by boiler band.
Summary of the invention
In order to solve the problem, the utility model provides a kind of tertiary air staged combustion device, and it can reduce the impact on main combustion zone, increases burnt wind ratio, effectively reduces NOx emission.
Its technical scheme is such: a kind of tertiary air staged combustion device, it comprises tertiary air conveyance conduit, it is characterized in that, described force 3 wind conveyance conduit connects light-dark separation device arrival end, the described light-dark separation device port of export connects dense side tertiary air pipeline and light side tertiary air pipeline, the main combustion zone of tertiary air pipeline communication, described dense side, tertiary air pipeline communication burnt zone, described light side.
It is further characterized in that, is separately installed with adjustable contraction in described dense side tertiary air pipeline, light side tertiary air pipeline.
After adopting structure of the present utility model, tertiary air is divided into deep or light two strands after tertiary air conveyance conduit is transported to light-dark separation device, dense tertiary air delivers to main combustion zone through overrich side tertiary air pipeline, light tertiary air delivers to burnt zone through light side tertiary air pipeline, as burnt wind, reduce the impact on main combustion zone, increase burnt wind ratio, effective reduction NOx emission, overcome in prior art the burnt wind arranging larger proportion, can cause boiler coke, furnace outlet gas temperature raises, and the defect of load do not gone up by boiler band.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Detailed description of the invention
As shown in Figure 1, a kind of tertiary air staged combustion device, it comprises tertiary air conveyance conduit 1, force 3 wind conveyance conduit 1 connects light-dark separation device 2(and bend pipe coal dust disconnecting gear) arrival end, light-dark separation device 2 port of export connects dense side tertiary air pipeline 3 and light side tertiary air pipeline 4, dense side tertiary air pipeline 3 is communicated with main combustion zone 6, and light side tertiary air pipeline 4 is communicated with burnt zone 7.
Be separately installed with adjustable contraction 5 in dense side tertiary air pipeline 3, light side tertiary air pipeline 4, dense tertiary air and light tertiary air flow can be regulated by adjustable contraction 5, reduce the impact on main combustion zone 6 further, increase burnt wind ratio, effectively reduce NOx emission.
This device of the present utility model is applied in the technological transformation of Products at present, and achieve good effect, for new product, the friendly 480t/h coal-powder boiler in Tangshan three have employed this technology, estimates will put into operation soon.
Claims (2)
1. a tertiary air staged combustion device, it comprises tertiary air conveyance conduit, it is characterized in that, described tertiary air conveyance conduit connects light-dark separation device arrival end, the described light-dark separation device port of export connects dense side tertiary air pipeline and light side tertiary air pipeline, the main combustion zone of tertiary air pipeline communication, described dense side, tertiary air pipeline communication burnt zone, described light side.
2. a kind of tertiary air staged combustion device according to claim 1, is characterized in that, is separately installed with adjustable contraction in described dense side tertiary air pipeline, light side tertiary air pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520261537.3U CN204629460U (en) | 2015-04-28 | 2015-04-28 | Tertiary air staged combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520261537.3U CN204629460U (en) | 2015-04-28 | 2015-04-28 | Tertiary air staged combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204629460U true CN204629460U (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520261537.3U Active CN204629460U (en) | 2015-04-28 | 2015-04-28 | Tertiary air staged combustion device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204629460U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465772A (en) * | 2015-04-28 | 2016-04-06 | 无锡华光锅炉股份有限公司 | Tertiary-air staged combustion device |
| CN106402847A (en) * | 2016-09-21 | 2017-02-15 | 黑龙江省电力科学研究院 | Burner arrangement structure with tertiary air and SOFA air arranged alternately |
-
2015
- 2015-04-28 CN CN201520261537.3U patent/CN204629460U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465772A (en) * | 2015-04-28 | 2016-04-06 | 无锡华光锅炉股份有限公司 | Tertiary-air staged combustion device |
| CN106402847A (en) * | 2016-09-21 | 2017-02-15 | 黑龙江省电力科学研究院 | Burner arrangement structure with tertiary air and SOFA air arranged alternately |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 214028 No. 3 Chengnan Road, new Wu District, Jiangsu, Wuxi Patentee after: Wuxi Huaguang Environmental Protection Energy Group Co., Ltd Address before: 214028 No. 3 Chengnan Road, New District, Jiangsu, Wuxi Patentee before: WUXI HUAGUANG BOILER Co.,Ltd. |