CN206935103U - A kind of W flame Denitration in Boiler system - Google Patents
A kind of W flame Denitration in Boiler system Download PDFInfo
- Publication number
- CN206935103U CN206935103U CN201720771101.8U CN201720771101U CN206935103U CN 206935103 U CN206935103 U CN 206935103U CN 201720771101 U CN201720771101 U CN 201720771101U CN 206935103 U CN206935103 U CN 206935103U
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- China
- Prior art keywords
- flue
- shower nozzle
- denitration
- boiler system
- flame
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Abstract
The utility model provides a kind of W flame Denitration in Boiler system, including boiler, the first flue, the second flue, dust removal machine, the chimney once connected；The utility model by setting SNCR and SCR denitration system respectively in flue, and it will control the shower nozzle of different zones that there is different atomizing effects and jet length by pressure regulator valve, the output of every spray gun can be adjusted, it is stronger to the adaptability of unit load and as-fired coal；Accurately Full-automatic temperature measuring system, all standing measurement is carried out to urea jeting area, accurately select the position that spray sets urea liquid, accurate orienting response is optimal " window temperature ", and according to temperature field, independent overlay area is set up for every spray gun.
Description
Technical field
It the utility model is related to a kind of W flame Denitration in Boiler system.
Background technology
For W flame boiler, in terms of NOx emission is reduced, low-NO_x combustion technology+SCR selective reduction methods are typically taken
Denitration technology route.From the point of view of current low NO applicable cases, in the outlet of W flame boiler applications rear hearth, NOx is dropped to
700mg/Nm3 has been highly desirable effect.Minimum discharge is realized, follow-up SCR denitration efficiency need to reach more than 93%.By right
Domestic more W type flame boilers running situations investigation consulting, depends merely on LNB+SCR denitration technologies, short time efficiency can reach after optimization
To 93%, but the operation that can not maintain a long-term stability, it can not meet minimum discharge requirement.In November, 2015, Chinese electromechanical engineering
Can be in Guizhou tissue《Overcritical W types flame boiler seminar》Middle brainstrust is proposed under state-of-the art, only
W flame boiler NOX stable minimum discharge is difficult to by LNB+SCR technologies.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of W flame Denitration in Boiler system.
The utility model is achieved by the following technical programs.
A kind of W flame Denitration in Boiler system provided by the utility model, including once connect boiler, the first flue,
Two flues, dust removal machine, chimney；Shower nozzle is installed in first flue, SCR reactors and sky are installed in second flue
Pre- device.
The SCR reactors are arranged on the front end of air preheater.
Infrared temperature sensor is additionally provided with the shower nozzle.
The shower nozzle is provided with some in the first flue and is each connected by single pipeline with feeder sleeve.
Pressure regulator valve is provided with the pipeline that the shower nozzle is connected with feeder sleeve.
The spray region of the shower nozzle does not interfere with one another.
The beneficial effects of the utility model are：By setting SNCR and SCR denitration system respectively in flue, and will be logical
The shower nozzle for crossing pressure regulator valve control different zones has different atomizing effects and jet length, can adjust going out for every spray gun
Power is stronger to the adaptability of unit load and as-fired coal；Accurately Full-automatic temperature measuring system, urea jeting area is carried out
All standing measures, and accurately selectes the position that spray sets urea liquid, accurate orienting response is optimal " window temperature ", according to temperature
, set up independent overlay area for every spray gun.Accurate survey calculation flow and pressure, realize to all spray guns individually control with
All areas in stove are covered under different load, while different spray gun any combination can be realized, enhance system to different coals
Kind, the adaptability of different load.The flow of single spray gun, concentration can individually be controlled in spray gun region, guarantee is sprayed
The uniformity of urea.According to temperature field, independent overlay area is set up for every spray gun；Can be to single spray gun in spray gun region
Flow, concentration are individually controlled.Effectively control the escaping of ammonia rate is in below 10ppm.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1- boilers, the flues of 2- first, the flues of 3- second, 4- dust removal machines, 5- chimneys, 6-SCR reactors, 7- shower nozzles,
8- pressure regulator valves, 9- feeder sleeves, 10- air preheaters.
Embodiment
Be described further below the technical solution of the utility model, but claimed scope be not limited to it is described.
A kind of W flame Denitration in Boiler system, including boiler 1, the first flue 2, the second flue 3, the dust removal machine once connected
4th, chimney 5；Shower nozzle 7 is installed in first flue 2, SCR reactors 6 and air preheater 10 are installed in second flue 3.
Have not by setting SNCR and SCR denitration system respectively in flue, and by the shower nozzle that different zones are controlled by pressure regulator valve
Same atomizing effect and jet length, can adjust the output of every spray gun, stronger to the adaptability of unit load and as-fired coal；
Accurately Full-automatic temperature measuring system, all standing measurement is carried out to urea jeting area, is accurately selected spray and is set urea liquid
Position, accurate orienting response is optimal " window temperature ", and according to temperature field, independent overlay area is set up for every spray gun.Essence
True survey calculation flow and pressure, realize that individually control under different load to cover all areas in stove to all spray guns, together
When can realize different spray guns any combination, enhance adaptability of the system to Coal rank, different load.In spray gun region
The flow of single spray gun, concentration can individually be controlled, ensure to spray the uniformity of urea.According to temperature field, for every spray
Rifle sets up independent overlay area；The flow of single spray gun, concentration can individually be controlled in spray gun region.Effectively control ammonia
Escapement ratio is in below 10ppm.
The SCR reactors 6 are arranged on the front end of air preheater 10.
Infrared temperature sensor is additionally provided with the shower nozzle 7.
The shower nozzle 7 is provided with some in the first flue 2 and is each connected by single pipeline with feeder sleeve 9.
Pressure regulator valve 8 is provided with the pipeline that the shower nozzle 7 is connected with feeder sleeve 9.
The spray region of the shower nozzle 7 does not interfere with one another.
Claims (6)
1. a kind of W flame Denitration in Boiler system, including once connect boiler (1), the first flue (2), the second flue (3), remove
Dirt machine (4), chimney (5), it is characterised in that：Shower nozzle (7) is installed in first flue (2), pacified in second flue (3)
Equipped with SCR reactors (6) and air preheater (10).
2. W flame Denitration in Boiler system as claimed in claim 1, it is characterised in that：The SCR reactors (6) are arranged on sky
The front end of pre- device (10).
3. W flame Denitration in Boiler system as claimed in claim 1, it is characterised in that：It is additionally provided with the shower nozzle (7) infrared
Temperature sensor.
4. W flame Denitration in Boiler system as claimed in claim 1, it is characterised in that：The shower nozzle (7) is in the first flue (2)
Inside it is provided with some and is each connected by single pipeline with feeder sleeve (9).
5. W flame Denitration in Boiler system as claimed in claim 1, it is characterised in that：The shower nozzle (7) connects with feeder sleeve (9)
Pressure regulator valve (8) is provided with the pipeline connect.
6. W flame Denitration in Boiler system as claimed in claim 1, it is characterised in that：The spray region of the shower nozzle (7) is mutual
Do not interfere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720771101.8U CN206935103U (en) | 2017-06-29 | 2017-06-29 | A kind of W flame Denitration in Boiler system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720771101.8U CN206935103U (en) | 2017-06-29 | 2017-06-29 | A kind of W flame Denitration in Boiler system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206935103U true CN206935103U (en) | 2018-01-30 |
Family
ID=61366381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720771101.8U Expired - Fee Related CN206935103U (en) | 2017-06-29 | 2017-06-29 | A kind of W flame Denitration in Boiler system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206935103U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110813048A (en) * | 2019-12-02 | 2020-02-21 | 中科聚信洁能热锻装备研发股份有限公司 | Flue gas denitration device and control method thereof |
-
2017
- 2017-06-29 CN CN201720771101.8U patent/CN206935103U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110813048A (en) * | 2019-12-02 | 2020-02-21 | 中科聚信洁能热锻装备研发股份有限公司 | Flue gas denitration device and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180130 Termination date: 20210629 |