CN204582950U - Denitration in Boiler spray ammonia grid guiding device - Google Patents
Denitration in Boiler spray ammonia grid guiding device Download PDFInfo
- Publication number
- CN204582950U CN204582950U CN201520265658.5U CN201520265658U CN204582950U CN 204582950 U CN204582950 U CN 204582950U CN 201520265658 U CN201520265658 U CN 201520265658U CN 204582950 U CN204582950 U CN 204582950U
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- deflector
- boiler
- pneumatic actuator
- spray ammonia
- denitration
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Abstract
The utility model provides a kind of Denitration in Boiler spray ammonia grid guiding device, it comprises deflector, deflector adjusting device, boiler load monitoring device, controller, deflector is arranged on spray ammonia barrier place, deflector adjusting device comprises pneumatic actuator and intelligent positioner, pneumatic actuator is connected with deflector, intelligent positioner is arranged on pneumatic actuator, boiler load checkout gear, deflector adjusting device is all connected with controller, guiding device adopts pneumatic adjustment deflector, deflector angle before adjustment ammonia-spraying grid, its manipulation adjusts accordingly according to the boiler load detected completely, to improve flue gas flow field distributing homogeneity, promote the mixing uniformity of flue gas and ammonia, reduce the escaping of ammonia rate, improve the purification efficiency of secondary flue gas.
Description
Technical field
the utility model relates to a kind of boiler plant auxiliary accessories, is specially a kind of Denitration in Boiler spray ammonia grid guiding device.
Background technology
Along with industrial generation unit capacity maximizes and the raising gradually of environmental requirement, the fume emission quality of overcritical large-sized boiler all includes strict supervision in, in fire coal boiler fume emission control, only adopt primary combustion control measure as low oxysulfide, nitrogen oxide burning technology etc., be difficult to meet discharge standard, also must utilize secondary flue gas control techniques, as installed tail flue gas desulfurization additional, denitration ammonia-gas spraying device etc., at present, several deflectors can be provided with in the outlet of denitration spray ammonia barrier, deflector design adopts fixed installation mode, when there is larger change in boiler load, flue gas flow changes greatly, flue gas flow field distribution changes, because deflector angle is fixed, cause ammonia-spraying grid place flue gas flow field skewness, it is excessive or not enough that subregion there will be ammonia spraying amount, for ensureing that denitrating system outlet NOx data do not exceed standard, ammonia spraying amount increases, system the escaping of ammonia raises, the problems such as air preheater blocking can be caused.
Summary of the invention
For solving the problems of the technologies described above, the utility model spy provides a kind of Denitration in Boiler spray ammonia grid guiding device, automatically can adjust ammonia spraying amount, improve secondary flue gas purification efficiency according to boiler load.
For achieving the above object, technical solution adopted in the utility model is:
A kind of Denitration in Boiler spray ammonia grid guiding device, it comprises deflector, deflector adjusting device, boiler load monitoring device, controller, deflector is arranged on spray ammonia barrier place, deflector adjusting device comprises pneumatic actuator and intelligent positioner, pneumatic actuator is connected with deflector, intelligent positioner is arranged on pneumatic actuator, and boiler load checkout gear, deflector adjusting device are all connected with controller.
Described intelligent positioner is connected with the gauge tap circuit of pneumatic actuator, and pneumatic actuator is provided with cylinder, and its cylinder movement range is monitored by intelligent positioner and controlled.
Deflector is made up of the steel plate that many groups have certain deflection angle, and the rotating shaft of deflector is connected with pneumatic actuator by connecting rod, and deflector is arranged on the front of spray ammonia barrier place flue, in order to adjust the flue gas water conservancy diversion situation in flue.
Described boiler load checkout gear comprises boiler feed water meter and data collecting instrument, and data collecting instrument is connected with water inlet meter, controller respectively.
The beneficial effects of the utility model are:
Denitration in Boiler spray ammonia grid guiding device adopts pneumatic adjustment deflector, deflector angle before adjustment ammonia-spraying grid, its manipulation adjusts accordingly according to the boiler load detected completely, to improve flue gas flow field distributing homogeneity, promote the mixing uniformity of flue gas and ammonia, reduce the escaping of ammonia rate, improve the purification efficiency of secondary flue gas.
Accompanying drawing explanation
Fig. 1 is the utility model example structure schematic diagram.
Detailed description of the invention
A kind of Denitration in Boiler spray ammonia grid guiding device as shown in drawings, it comprises deflector 1, deflector adjusting device, boiler load monitoring device 3, controller 4, deflector 1 is arranged on spray ammonia barrier place, deflector adjusting device comprises pneumatic actuator 2 and intelligent positioner 5, pneumatic actuator 2 is connected with deflector 1, intelligent positioner 5 is arranged on pneumatic actuator 2, and boiler load checkout gear 3, deflector adjusting device is all connected with controller 4.
Described intelligent positioner 5 is connected with the gauge tap circuit of pneumatic actuator 2, and pneumatic actuator 2 is provided with cylinder, and its cylinder movement range is monitored by intelligent positioner 5 and controlled.
Deflector 1 is made up of the steel plate that many groups have certain deflection angle, and the rotating shaft of deflector is connected with pneumatic actuator 2 by connecting rod, and deflector 1 is arranged on the front of spray ammonia barrier place flue, in order to adjust the flue gas water conservancy diversion situation in flue.
Described boiler load checkout gear 3 comprises boiler feed water meter and data collecting instrument, and data collecting instrument is connected with water inlet meter, controller respectively.
Before formal this device of use, first before will carrying out ammonia-spraying grid, flue gas flow field distribution character is tested, under different boiler load, by adjustment deflector angle, find the deflector angle corresponding to flue gas flow field best distribution under this load, by the best deflector angle-data corresponding to boiler load stored in controller system, in running, deflector carries out the angle adjustment of deflector from the change of motion tracking boiler load.
Claims (4)
1. a Denitration in Boiler spray ammonia grid guiding device, it is characterized in that: it comprises deflector, deflector adjusting device, boiler load monitoring device, controller, deflector is arranged on spray ammonia barrier place, deflector adjusting device comprises pneumatic actuator and intelligent positioner, pneumatic actuator is connected with deflector, intelligent positioner is arranged on pneumatic actuator, and boiler load checkout gear, deflector adjusting device are all connected with controller.
2. Denitration in Boiler spray ammonia grid guiding device according to claim 1, is characterized in that: described intelligent positioner is connected with the gauge tap circuit of pneumatic actuator, and pneumatic actuator is provided with cylinder.
3. Denitration in Boiler spray ammonia grid guiding device according to claim 1, it is characterized in that: deflector is made up of the steel plate that many groups have certain deflection angle, the rotating shaft of deflector is connected with pneumatic actuator by connecting rod, and deflector is arranged on the front of spray ammonia barrier place flue.
4. Denitration in Boiler spray ammonia grid guiding device according to claim 1, it is characterized in that: described boiler load checkout gear comprises boiler feed water meter and data collecting instrument, data collecting instrument is connected with water inlet meter, controller respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520265658.5U CN204582950U (en) | 2015-04-29 | 2015-04-29 | Denitration in Boiler spray ammonia grid guiding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520265658.5U CN204582950U (en) | 2015-04-29 | 2015-04-29 | Denitration in Boiler spray ammonia grid guiding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204582950U true CN204582950U (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520265658.5U Expired - Fee Related CN204582950U (en) | 2015-04-29 | 2015-04-29 | Denitration in Boiler spray ammonia grid guiding device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204582950U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008147A (en) * | 2017-06-09 | 2017-08-04 | 南京电力设备质量性能检验中心 | A kind of ammonia-gas spraying device for SCR denitration system |
| CN108993136A (en) * | 2018-08-13 | 2018-12-14 | 丁文铃 | A kind of efficiency of waste gas denitrification apparatus |
| CN109173708A (en) * | 2018-09-14 | 2019-01-11 | 国网河北省电力有限公司电力科学研究院 | Flow mixing device, SCR denitration system and denitrating system flue gas duct even method |
| CN109432978A (en) * | 2018-12-28 | 2019-03-08 | 启明星宇节能科技股份有限公司 | A kind of denitration flue gas disturbance device |
| CN113694762A (en) * | 2021-08-24 | 2021-11-26 | 西安热工研究院有限公司 | Self-adaptive adjustment dynamic ammonia injection mixer |
-
2015
- 2015-04-29 CN CN201520265658.5U patent/CN204582950U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008147A (en) * | 2017-06-09 | 2017-08-04 | 南京电力设备质量性能检验中心 | A kind of ammonia-gas spraying device for SCR denitration system |
| CN107008147B (en) * | 2017-06-09 | 2023-01-31 | 国能南京电力试验研究有限公司 | Ammonia spraying device for SCR denitration system |
| CN108993136A (en) * | 2018-08-13 | 2018-12-14 | 丁文铃 | A kind of efficiency of waste gas denitrification apparatus |
| CN109173708A (en) * | 2018-09-14 | 2019-01-11 | 国网河北省电力有限公司电力科学研究院 | Flow mixing device, SCR denitration system and denitrating system flue gas duct even method |
| CN109432978A (en) * | 2018-12-28 | 2019-03-08 | 启明星宇节能科技股份有限公司 | A kind of denitration flue gas disturbance device |
| CN113694762A (en) * | 2021-08-24 | 2021-11-26 | 西安热工研究院有限公司 | Self-adaptive adjustment dynamic ammonia injection mixer |
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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: 20150826 Termination date: 20160429 |