CN204034568U - SCR+SNCR combined denitration reactor - Google Patents
SCR+SNCR combined denitration reactor Download PDFInfo
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- CN204034568U CN204034568U CN201420498806.3U CN201420498806U CN204034568U CN 204034568 U CN204034568 U CN 204034568U CN 201420498806 U CN201420498806 U CN 201420498806U CN 204034568 U CN204034568 U CN 204034568U
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Abstract
SCR+SNCR combined denitration reactor, comprise SNCR reactor, atomization process tank, cyclone dust collector and SCR reactor, SNCR reactor upper end is provided with HP jetting pump, HP jetting pump connects air inlet pipe and ammonia water pipe respectively, HP jetting pump also connects high-pressure injection pipe, high-pressure injection pipe stretches into SNCR inside reactor, described SNCR reactor outer wall is provided with thermal insulation layer, the inwall of SNCR reactor is provided with electric heater, SNCR reactor connects atomization process tank by relief valve, atomization process tank inside is provided with water smoke jet pipe and filter grid, circulating water pipe is provided with bottom atomization process tank, atomization process tank gas outlet connects cyclone dust collector, cyclone dust collector connects SCR reactor.
Description
Technical field
The utility model relates to field of Environment Protection, especially relates to a kind of SCR+SNCR combined denitration reactor being applicable to harmful smoke process.
Background technology
Sulfur dioxide and nitrogen oxide affect larger gaseous contaminant in atmosphere pollution, has high risks to human body, environment and the ecosystem, along with the increasingly stringent of environmental requirement, and NO
xand SO
2the problem of discharge more and more receives publicity.Sulfur dioxide and nitrogen oxide mainly stem from the combustion process of the fossil fuel such as coal, oil, and the roasting of ore, the fume emission of smelting process, wherein various burning boiler particularly power plant boiler smoke evacuation there is the features such as concentration is low, exhaust gas volumn is large, floating dust is many and be difficult to administer.In conventional art, desulfurization and denitration are normally separately carried out by discharge sulfur dioxide in flue gas and purification of nitrogen oxides technology, which results in the defects such as the complexity of discharging flue gas purification system is huge, initial outlay is large, operating cost is high, seriously constrain the actual enforcement of discharge flue gas desulfurization and denitrification.Flue gas desulfurization technique is mainly based on Gypsum Wet, rotating spraying semidry method, in-furnace calcium spraying afterbody humidification activation, sea water desulfuration, electron-beam desulfurization, flue gas circulating fluidized bed desulfurization etc., wherein Wet Limestone method is the tail flue gas desulfur technology be most widely used in the world now, its subject matter is that the solubility of absorbent (lime or lime stone) is little, utilization rate is low, and waste residue amount is large; Gas denitrifying technology mainly contains SCR technology (SCR), SNCR technology (SNCR), electronic beam method, impulse electric corona method, complex compound absorption process and urea absorptive method etc., gas denitrifying technology mainly SCR technology, SNCR technology and SNCR/SCR combination technique comparatively ripe in current operation, but there is initial investment costly in SCR method, operating temperature range is narrow, and there is NH_3 leakage, can N be generated
2o, and the shortcoming such as catalyst easy in inactivation; And SNCR denitration efficiency is lower, and NH_3 leakage is many, causes secondary pollution.
Utility model content
In order to overcome above-mentioned technical problem, the utility model provides a kind of compact conformation, reveals little, the SCR+SNCR combined denitration reactor that treatment effeciency is high, and the technical scheme of employing is as follows:
SCR+SNCR combined denitration reactor, comprise SNCR reactor, atomization process tank, cyclone dust collector and SCR reactor, SNCR reactor upper end is provided with HP jetting pump, HP jetting pump connects air inlet pipe and ammonia water pipe respectively, HP jetting pump also connects high-pressure injection pipe, high-pressure injection pipe stretches into SNCR inside reactor, described SNCR reactor outer wall is provided with thermal insulation layer, the inwall of SNCR reactor is provided with electric heater, SNCR reactor connects atomization process tank by relief valve, atomization process tank inside is provided with water smoke jet pipe and filter grid, circulating water pipe is provided with bottom atomization process tank, atomization process tank gas outlet connects cyclone dust collector, cyclone dust collector connects SCR reactor.
Further, the thermal insulation layer of described SNCR reactor is asbestos.
Further, described filter grid is located at the lower end of water smoke jet pipe.
Further, described cyclone dust collector is provided with water inlet pipe and residual cake valve.
Adopt above-mentioned SCR+SNCR combined denitration reactor, compact conformation, reveal little, treatment effeciency is high, avoids the leakage of ammonia.
Accompanying drawing explanation
Fig. 1 is the structural representation of SCR+SNCR combined denitration reactor.
Detailed description of the invention
SCR+SNCR combined denitration reactor as shown in Figure 1, comprise SNCR reactor 9, atomization process tank 10, cyclone dust collector 7 and SCR reactor 13, SNCR reactor 9 upper end is provided with HP jetting pump 14, HP jetting pump 14 connects air inlet pipe 3 and ammonia water pipe 2 respectively, HP jetting pump 14 also connects high-pressure injection pipe 4, it is inner that high-pressure injection pipe 4 stretches into SNCR reactor 9, described SNCR reactor 9 outer wall is provided with insulating layer of asbestos, the inwall of SNCR reactor 9 is provided with electric heater 1, SNCR reactor 9 connects atomization process tank 10 by relief valve 15, atomization process tank 10 inside is provided with water smoke jet pipe 11 and filter grid 6, filter grid 6 is located at the lower end of water smoke jet pipe 11, circulating water pipe 5 is provided with bottom atomization process tank 10, atomization process tank 10 gas outlet connects cyclone dust collector 7, cyclone dust collector 7 is provided with water inlet pipe 12 and residual cake valve 8, cyclone dust collector 7 connects SCR reactor 13.
The above, be only detailed description of the invention of the present utility model, and those of ordinary skill in the art are in the scope that the utility model discloses, and the change that can expect easily, within the protection domain that all should be encompassed in utility model.
Claims (4)
1.SCR+SNCR combined denitration reactor, comprise SNCR reactor, atomization process tank, cyclone dust collector and SCR reactor, it is characterized in that SNCR reactor upper end is provided with HP jetting pump, HP jetting pump connects air inlet pipe and ammonia water pipe respectively, HP jetting pump also connects high-pressure injection pipe, high-pressure injection pipe stretches into SNCR inside reactor, described SNCR reactor outer wall is provided with thermal insulation layer, the inwall of SNCR reactor is provided with electric heater, SNCR reactor connects atomization process tank by relief valve, atomization process tank inside is provided with water smoke jet pipe and filter grid, circulating water pipe is provided with bottom atomization process tank, atomization process tank gas outlet connects cyclone dust collector, cyclone dust collector connects SCR reactor.
2. SCR+SNCR combined denitration reactor as claimed in claim 1, is characterized in that the thermal insulation layer of described SNCR reactor is asbestos.
3. SCR+SNCR combined denitration reactor as claimed in claim 1, is characterized in that described filter grid is located at the lower end of water smoke jet pipe.
4. SCR+SNCR combined denitration reactor as claimed in claim 1, is characterized in that described cyclone dust collector is provided with water inlet pipe and residual cake valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420498806.3U CN204034568U (en) | 2014-09-02 | 2014-09-02 | SCR+SNCR combined denitration reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420498806.3U CN204034568U (en) | 2014-09-02 | 2014-09-02 | SCR+SNCR combined denitration reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204034568U true CN204034568U (en) | 2014-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420498806.3U Expired - Fee Related CN204034568U (en) | 2014-09-02 | 2014-09-02 | SCR+SNCR combined denitration reactor |
Country Status (1)
| Country | Link |
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| CN (1) | CN204034568U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106268316A (en) * | 2016-08-26 | 2017-01-04 | 合肥合意环保科技工程有限公司 | A kind of multidirectional injection SNCR adds monolayer SCR denitration system |
| CN107469595A (en) * | 2017-09-19 | 2017-12-15 | 浙江工匠环境科技有限公司 | A kind of dust removal integrated device and method of waste gas of industrial kiln and furnace desulphurization denitration |
| CN109764351A (en) * | 2018-12-12 | 2019-05-17 | 河南心连心化肥有限公司 | A kind of coal-fired boiler tail gas minimum discharge device and discharge technology |
-
2014
- 2014-09-02 CN CN201420498806.3U patent/CN204034568U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106268316A (en) * | 2016-08-26 | 2017-01-04 | 合肥合意环保科技工程有限公司 | A kind of multidirectional injection SNCR adds monolayer SCR denitration system |
| CN107469595A (en) * | 2017-09-19 | 2017-12-15 | 浙江工匠环境科技有限公司 | A kind of dust removal integrated device and method of waste gas of industrial kiln and furnace desulphurization denitration |
| CN109764351A (en) * | 2018-12-12 | 2019-05-17 | 河南心连心化肥有限公司 | A kind of coal-fired boiler tail gas minimum discharge device and discharge technology |
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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: 20141224 Termination date: 20150902 |
|
| EXPY | Termination of patent right or utility model |