CN203620510U - Flue gas denitration system - Google Patents
Flue gas denitration system Download PDFInfo
- Publication number
- CN203620510U CN203620510U CN201320785233.8U CN201320785233U CN203620510U CN 203620510 U CN203620510 U CN 203620510U CN 201320785233 U CN201320785233 U CN 201320785233U CN 203620510 U CN203620510 U CN 203620510U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- pipeline
- outlet
- feeding device
- burner hearth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000003546 flue gas Substances 0.000 title claims abstract description 26
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004202 carbamide Substances 0.000 claims abstract description 8
- 239000000376 reactant Substances 0.000 claims abstract description 6
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000012806 monitoring device Methods 0.000 abstract 2
- 238000005507 spraying Methods 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model provides a flue gas denitration system. In the system, denitration can be performed without liquid, so that denitration is simple, safe and efficient. The denitration system comprises a feeding device, wherein the lower side of the feeding device faces the upper feeding hole of a reactant storage cabin; a quantitative feeding device is arranged on the lower discharging hole of the reactant storage cabin; the outlet of the quantitative feeding device is connected to the inlet of a spraying device through a pipeline; compressed air is introduced into the pipeline; the outlet of the spraying device is positioned above the side wall of a hearth; the bottom of the hearth is provided with a flue gas inlet; the upper part of the other side wall of the hearth is provided with a flue gas outlet pipeline; a corresponding probe of a flue gas online monitoring device is arranged in the flue gas outlet pipeline; the flue gas online monitoring device is externally connected with the input end of a PLC (Programmable Logic Controller) control system; the output end of the PLC control system is connected with a power source at the output end of the quantitative feeding device; the feeding device is filled with urea particles.
Description
Technical field
The utility model relates to the technical field of gas cleaning, is specially a kind of flue gas denitrification system.
Background technology
At present, according to the discharge standard of every profession and trade flue gas, need to reduce processing to the nitrogen oxides pollution thing in flue gas.SNCR method of the prior art (SNCR) is take ammoniacal liquor (or urea liquid) as reducing agent, with the reaction of nitrogen oxides in burner hearth.Its shortcoming is that ammoniacal liquor and liquefied ammonia are that dangerous cargo is not easy to transportation and storage is applied less; And urea liquid need be prepared at the scene, carry, dilutes, mixes to be injected in burner hearth again and go, complex process, cost of investment and regular maintenance expense are higher.
Utility model content
For existing above-mentioned defect, the utility model provides a kind of flue gas denitrification system, and it carries out denitration without re-using liquid, makes denitration simply, safely, effectively.
A kind of flue gas denitrification system, it is characterized in that: it comprises feeding device, the top charging aperture of the below orientating reaction agent warehouse of described feeding device, the bottom discharging opening of described reactant warehouse is provided with metering device, the outlet of described metering device is connected to the entrance of flusher by pipeline, in described pipeline, pass into compressed air, the outlet of described flusher is positioned at the sidewall top of described burner hearth, the bottom of described burner hearth is smoke inlet, the upper position of another sidewall of described burner hearth has exhanst gas outlet pipeline, in described exhanst gas outlet pipeline, be furnished with the correspondence probe of flue gas on-Line Monitor Device, the input of the external PLC control system of described flue gas on-Line Monitor Device, the output of described PLC control system connects the power source of the output of described metering device, in described feeding device, it is urea granules.
It is further characterized in that: the outlet of charging gear is communicated with the material inlet of blast injection device, the outlet side of described blast injection device connects one end of described pipeline, and the compressed air in described blast injection device sprays to described flusher by described pipeline;
Temperature in described burner hearth is 900 ℃～1100 ℃.
After flue gas denitrification system of the present utility model, urea granules injects directly to the entrance of flusher by compressed air, then enter burner hearth by flusher, nitrogen oxide generation chemical reaction in the flue gas coming up with below: in addition, flue gas on-Line Monitor Device is to the NO in flue gas for 2CO (NH2) 2+4NO+O2=4N2+4H2O+2CO2
xcontent is tested, and feed back to PLC control system, the power source of the output of PLC control system calculating rear drive metering device is to regulate the dosage of reactant, it adopts urea granules as final reducing agent, it carries out denitration without re-using liquid, makes denitration simply, safely, effectively.
Accompanying drawing explanation
Fig. 1 is structural representation block diagram sketch of the present utility model.
The specific embodiment
See Fig. 1, it comprises feeding device 1, the top charging aperture of the below orientating reaction agent warehouse 2 of feeding device 2, the bottom discharging opening of reactant warehouse 2 is provided with metering device 3, the outlet of metering device 3 is connected to the entrance of flusher 5 by pipeline, in pipeline, pass into compressed air, the outlet of flusher 5 is positioned at the sidewall top of burner hearth 8, the bottom of burner hearth 8 is smoke inlet, the upper position of another sidewall of burner hearth 8 has exhanst gas outlet pipeline 9, in exhanst gas outlet pipeline 9, be furnished with the correspondence probe of flue gas on-Line Monitor Device 6, the input of the external PLC control system 7 of flue gas on-Line Monitor Device 6, the output of PLC control system 7 connects the power source of the output of metering device 3, in feeding device 1, it is urea granules.The outlet of charging gear 3 is communicated with the material inlet of blast injection device 4, one end of the outlet side connecting pipe of blast injection device 4, the inlet end of blast injection device 4 passes into compressed air, and the compressed air in blast injection device 4 sprays to flusher 5 by pipeline; Temperature in burner hearth 8 is 900 ℃～1100 ℃.
Claims (3)
1. a flue gas denitrification system, it is characterized in that: it comprises feeding device, the top charging aperture of the below orientating reaction agent warehouse of described feeding device, the bottom discharging opening of described reactant warehouse is provided with metering device, the outlet of described metering device is connected to the entrance of flusher by pipeline, in described pipeline, pass into compressed air, the outlet of described flusher is positioned at the sidewall top of described burner hearth, the bottom of described burner hearth is smoke inlet, the upper position of another sidewall of described burner hearth has exhanst gas outlet pipeline, in described exhanst gas outlet pipeline, be furnished with the correspondence probe of flue gas on-Line Monitor Device, the input of the external PLC control system of described flue gas on-Line Monitor Device, the output of described PLC control system connects the power source of the output of described metering device, in described feeding device, it is urea granules.
2. a kind of flue gas denitrification system according to claim 1, it is characterized in that: the outlet of charging gear is communicated with the material inlet of blast injection device, the outlet side of described blast injection device connects one end of described pipeline, and the compressed air in described blast injection device sprays to described flusher by described pipeline.
3. a kind of flue gas denitrification system according to claim 1 and 2, is characterized in that: the temperature in described burner hearth is 900 ℃～1100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320785233.8U CN203620510U (en) | 2013-12-04 | 2013-12-04 | Flue gas denitration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320785233.8U CN203620510U (en) | 2013-12-04 | 2013-12-04 | Flue gas denitration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203620510U true CN203620510U (en) | 2014-06-04 |
Family
ID=50807037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320785233.8U Expired - Lifetime CN203620510U (en) | 2013-12-04 | 2013-12-04 | Flue gas denitration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203620510U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103611412A (en) * | 2013-12-04 | 2014-03-05 | 无锡雪浪环境科技股份有限公司 | Flue gas denitrification system |
-
2013
- 2013-12-04 CN CN201320785233.8U patent/CN203620510U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103611412A (en) * | 2013-12-04 | 2014-03-05 | 无锡雪浪环境科技股份有限公司 | Flue gas denitrification system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 214000 no.2020 Lihu Avenue, Binhu District, Wuxi City, Jiangsu Province Patentee after: WUXI XUELANG ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Address before: 214128, Wuxi, Jiangsu province Binhu District Taihu Street double new economic Park Patentee before: WUXI XUELANG ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |