CN204806429U - SCR deNOx systems who simplifies - Google Patents
SCR deNOx systems who simplifies Download PDFInfo
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- CN204806429U CN204806429U CN201520593715.2U CN201520593715U CN204806429U CN 204806429 U CN204806429 U CN 204806429U CN 201520593715 U CN201520593715 U CN 201520593715U CN 204806429 U CN204806429 U CN 204806429U
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- China
- Prior art keywords
- air
- aforesaid
- static mixer
- air inlet
- denitration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model provides a SCR deNOx systems who simplifies which characterized in that includes exhaust -heat boiler, static mixer and ammonia intake pipe. Exhaust -heat boiler has flue gas entry and exhanst gas outlet and enters the mouth to the exhanst gas outlet from the flue gas and is equipped with steam superheating section, regeneration air preheating section, steam generation section and denitration interval in in proper order, and aforesaid regeneration air preheating section has cold air intake duct and hot -air outlet duct, and aforesaid denitration interval has the mixed admission pipe, static mixer's gas outlet and aforesaid mixed intake -tube connection, the air inlet all is connected with aforesaid cold air intake duct and hot -air outlet duct, the ammonia intake pipe, the ammonia source is connected to the inlet end, and aforementioned static mixer's air inlet is connected to the end of giving vent to anger. Compared with the prior art, the utility model has the advantages of overall structure is simple, easily realizes, denitration simultaneously is respond well.
Description
Technical field
The utility model relates to a kind of SCR denitration system, can be applied to the denitration of dehydrogenating propane device for the useless regeneration air after catalyst regeneration.
Background technology
Selective catalytic reduction (SelectiveCatalyticReduction, SCR) denitration technology, refers under the effect of catalyst, utilizes reducing agent (as NH
3, liquefied ammonia, urea) come " selective " with the NO in flue gas
xreact and generate the N of nontoxic pollution-free
2and H
2o.This technology has NO
xthe features such as removal efficiency is high, secondary pollution is little, technology is more ripe, be apply in the world at most at present, the most fruitful a kind of gas denitrifying technology.
A lot of the SCR disconnecting means and the method for denitration that are applicable to respective chemical field is disclosed, if the patent No. is the Chinese invention patent " a kind of SCR denitration device and method of denitration being applicable to medium small boiler " (Authorization Notice No. is CN103506005B) of ZL201310473172.6 in prior art; And for example application number is open " a kind of SCR denitration method of ammoniacal liquor and device " (publication number is CN104548930A) of Chinese invention patent application of 201410827405.2., and application number is open " a kind of portable SCR denitration device of convenient and efficient " (publication number is CN104307362A) of Chinese invention patent application of 201410545858.6 for another example.
Dehydrogenating propane device is used in the useless regeneration air after catalyst regeneration containing NO, NO
2deng nitrogen oxide, need to be removed.Existing SCR disconnecting means does not also have special for dehydrogenating propane device for the useless regeneration air after catalyst regeneration, therefore needs to develop a set of new system.
Utility model content
Technical problem to be solved in the utility model is the SCR denitration system of the simplification providing a kind of denitration cost lower for the above-mentioned state of the art and easily realize.
Technical problem to be solved in the utility model provides a kind of for the above-mentioned state of the art to be particularly suitable for the SCR denitration system of dehydrogenating propane device for the useless regeneration air after catalyst regeneration.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of SCR denitration system of simplification, it is characterized in that comprising
Waste heat boiler, there is smoke inlet and exhanst gas outlet and from smoke inlet to exhanst gas outlet successively in be provided with steam superheating section, regeneration air preheating section, steam generation section and denitration interval, aforesaid regeneration air preheating section has cold air air inlet pipe and hot-air escape pipe, and aforesaid denitration interval has and is mixed into tracheae;
Static mixer, gas outlet is connected with the aforesaid tracheae that is mixed into, air inlet is all connected with aforesaid cold air air inlet pipe and hot-air escape pipe, and, this static mixer and hot-air escape pipe connecting line are provided with the first air valve, and this static mixer and cold air air inlet pipe connecting line are provided with the second air valve;
Ammonia air inlet pipe, inlet end connects ammonia source, and outlet side connects the air inlet of aforementioned static blender; And
3rd air valve, is located in aforesaid ammonia air inlet pipe.
Described cold air air inlet pipe is connected an arm with hot-air escape pipe, and this arm is connected on static mixer, and this arm is provided with gas flowmeter and thermometer.
Compared with prior art, the utility model has the advantage of: decrease the air blast needed for existing SCR denitration and corresponding corollary system, not only can reach good denitration effect, and air capacity when can adjust different operating mode flexibly needed for denitration, be applicable to very much the afterheat boiler system of dehydrogenating propane and similar device.Achieve the object reducing costs and reduce energy consumption.Overall structure is simple, realizes easily.
Accompanying drawing explanation
Fig. 1 is example structure schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
As shown in Figure 1, the SCR denitration system of the simplification in the present embodiment comprises waste heat boiler 1, static mixer 2, ammonia air inlet pipe 8, first air valve 51, second air valve 52 and the 3rd air valve 53.
Waste heat boiler 1 there is smoke inlet and exhanst gas outlet and from smoke inlet to exhanst gas outlet successively in be provided with steam superheating section 11, regeneration air preheating section 12, steam generation section 13 and denitration interval 14, regeneration air preheating section 12 has cold air air inlet pipe 54 and hot-air escape pipe 55, and denitration interval 14 has and is mixed into tracheae 6.
The gas outlet of static mixer 2 be mixed into tracheae 6 and be connected, air inlet is all connected with cold air air inlet pipe 54 and hot-air escape pipe 55, and, this static mixer 2 is provided with the first air valve 51 with hot-air escape pipe 55 connecting line, and this static mixer 2 is provided with the second air valve 52 with cold air air inlet pipe 54 connecting line; The inlet end of ammonia air inlet pipe 8 connects ammonia source, and outlet side connects the air inlet of static mixer 2; 3rd air valve 53 is located in ammonia air inlet pipe 8.
Cold air air inlet pipe 54 is connected one 7 pipe with hot-air escape pipe 55, this arm 7 is connected on static mixer 2, and this arm is provided with gas flowmeter 4 and thermometer 3.
The System Working Principle of this simplification is described below:
Open the first air valve 51, hot-air enters static mixer 2; Open the second air valve 52, cold air enters static mixer 2.First air valve 51 and the second air valve 52 are opened to appropriate location, meets the flow needed for diluent air and temperature, wherein, gas flowmeter 4 and thermometer 3 teletransmission also can show flow and temperature on DCS.
Open the ammonia amount that the 3rd air valve 53 adjustment enters denitration interval 14, when guaranteeing that nitrogen oxides in effluent concentration under different operating mode is different, ammonia can carry out reduction reaction in the proper ratio, thus maximizes the nitrous oxides concentration reduced in waste heat boiler 1 exiting flue gas.
Static mixer 2 can allow diluent air and the good mixing of ammonia, thus guarantees that ammonia can spray into denitration interval 14 evenly in right amount.
If be necessary, the 3rd air valve 53 can be replaced by control valve, guarantee that the flow of ammonia can be precisely controlled.
Claims (2)
1. the SCR denitration system simplified, is characterized in that comprising
Waste heat boiler, there is smoke inlet and exhanst gas outlet and from smoke inlet to exhanst gas outlet successively in be provided with steam superheating section, regeneration air preheating section, steam generation section and denitration interval, aforesaid regeneration air preheating section has cold air air inlet pipe and hot-air escape pipe, and aforesaid denitration interval has and is mixed into tracheae;
Static mixer, gas outlet is connected with the aforesaid tracheae that is mixed into, air inlet is all connected with aforesaid cold air air inlet pipe and hot-air escape pipe, and, this static mixer and hot-air escape pipe connecting line are provided with the first air valve, and this static mixer and cold air air inlet pipe connecting line are provided with the second air valve;
Ammonia air inlet pipe, inlet end connects ammonia source, and outlet side connects the air inlet of aforementioned static blender; And
3rd air valve, is located in aforesaid ammonia air inlet pipe.
2. the SCR denitration system of simplification according to claim 1, it is characterized in that described cold air air inlet pipe is connected an arm with hot-air escape pipe, this arm is connected on static mixer, and this arm is provided with gas flowmeter and thermometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520593715.2U CN204806429U (en) | 2015-08-03 | 2015-08-03 | SCR deNOx systems who simplifies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520593715.2U CN204806429U (en) | 2015-08-03 | 2015-08-03 | SCR deNOx systems who simplifies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204806429U true CN204806429U (en) | 2015-11-25 |
Family
ID=54591247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520593715.2U Active CN204806429U (en) | 2015-08-03 | 2015-08-03 | SCR deNOx systems who simplifies |
Country Status (1)
| Country | Link |
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| CN (1) | CN204806429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536530A (en) * | 2016-01-28 | 2016-05-04 | 董亚伦 | Low-temperature desulfurization and denitration integration device |
-
2015
- 2015-08-03 CN CN201520593715.2U patent/CN204806429U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536530A (en) * | 2016-01-28 | 2016-05-04 | 董亚伦 | Low-temperature desulfurization and denitration integration device |
| CN105536530B (en) * | 2016-01-28 | 2018-04-20 | 山东佳工环保科技股份有限公司 | A kind of low-temp desulfurization denitrification integrated device |
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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 |
Address after: 315803 No. 168 Hongyuan Road, Qijiashan Street, Beilun District, Ningbo City, Zhejiang Province Patentee after: Ningbo Golden Hair New Materials Co., Ltd. Address before: 315801 No. 168 Hongyuan Road, Beilun District, Ningbo City, Zhejiang Province Patentee before: NINGBO HAIYUE NEW MATERIAL CO., LTD. |
|
| CP03 | Change of name, title or address |