CN204672141U - A kind of controllable type denitration reaction system - Google Patents
A kind of controllable type denitration reaction system Download PDFInfo
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- CN204672141U CN204672141U CN201520353953.6U CN201520353953U CN204672141U CN 204672141 U CN204672141 U CN 204672141U CN 201520353953 U CN201520353953 U CN 201520353953U CN 204672141 U CN204672141 U CN 204672141U
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- flue gas
- gas flow
- reaction system
- flue
- scr denitration
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Abstract
The utility model discloses a kind of controllable type denitration reaction system, comprise SCR denitration reactor (1), coal-burning boiler (2) and air preheater (3), coal-burning boiler (2) is provided with main chimney flue (4), main chimney flue (4) is connected with 4 by-pass flues (5), 4 by-pass flues (5) are connected to a SCR denitration reactor (1), the port of export of 4 SCR denitration reactors (1) is all connected with air preheater (3) by exhaust uptake (6); Described 4 by-pass flues (5) are equipped with flue gas flow control device (7).The utility model can adjust the quantity of the SCR denitration reactor of participation work automatically according to unit flue gas flow size, prevent from, because flue gas flow deficiency causes catalyst surface flying dust to deposit, effectively to ensure denitration effect, can reducing again the waste of the energy.
Description
Technical field
The utility model relates to a kind of denitration reaction system, and particularly a kind of controllable type denitration reaction system, belongs to energy-conserving and environment-protective field.
Background technology
General coal-burning power plant every platform unit SCR denitration reactor is 2, is arranged between economizer and air preheater.Be furnished with catalyst in reactor, the NOx in flue gas under the effect of catalyst, with the NH sprayed in flue before reactor
3carry out reaction removing.
But the unit load of domestic a lot of power plant is lower, only has 50% of normal duty.Because load reduces, the flow velocity of flue gas in reactor is very low, and flying dusts a large amount of in flue gas can deposit to the surface of catalyst, affects the effect of catalyst.
Utility model content
The purpose of this utility model is, a kind of controllable type denitration reaction system is provided, it can adjust the quantity of the SCR denitration reactor of participation work automatically according to unit flue gas flow size, prevent because flue gas flow deficiency causes catalyst surface flying dust to deposit, effectively can either ensure denitration effect, the waste of the energy can be reduced again.
The technical solution of the utility model: a kind of controllable type denitration reaction system, comprise SCR denitration reactor, coal-burning boiler and air preheater, coal-burning boiler is provided with main chimney flue, main chimney flue is connected with 4 by-pass flues, 4 by-pass flues are connected to a SCR denitration reactor, the port of export of 4 SCR denitration reactors is all connected with air preheater by exhaust uptake; Described 4 by-pass flues are equipped with flue gas flow control device.
In aforesaid this controllable type denitration reaction system, in described main chimney flue, be provided with economizer.
In aforesaid this controllable type denitration reaction system, described flue gas flow control device comprises baffle plate, connecting axle and drive motors, and baffle plate is located in by-pass flue, and baffle plate is connected with drive motors by connecting axle.
In aforesaid this controllable type denitration reaction system, main chimney flue is provided with flue gas flow detector.
In aforesaid this controllable type denitration reaction system, the load of described 4 SCR denitration reactors is 25%.
Compared with prior art, the utility model adopt 4 loads be 25% SCR denitration reactor replace 2 traditional loads be 50% SCR denitration reactor, closedown one or 2 SCR denitration reactors can be selected when the flue gas flow of coal-burning boiler is not enough, the energy resource consumption of equipment can either be reduced like this, enough flue gas flows can be ensured again, effectively prevent the flying dust in flue gas from can deposit, ensure denitration effect.
By arranging flue gas flow detector and drive motors, the open and close state of automatic controllable register can be realized, realize Automated condtrol, without the need to artificially monitoring and operating.
Accompanying drawing explanation
Fig. 1 is the structure diagram of controllable type denitration reaction system.
Fig. 2 is the structural representation of flue gas flow control device.
Being labeled as in accompanying drawing: 1-SCR Benitration reactor, 2-coal-burning boiler, 3-air preheater, 4-main chimney flue, 5-by-pass flue, 6-exhaust uptake, 7-flue gas flow control device, 8-economizer, 9-baffle plate, 10-connecting axle, 11-drive motors, 12-flue gas flow detector.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described.
Embodiment of the present utility model: as shown in Figure 1, a kind of controllable type denitration reaction system, comprise SCR denitration reactor 1, coal-burning boiler 2 and air preheater 3, coal-burning boiler 2 is provided with main chimney flue 4, main chimney flue 4 is connected with 4 by-pass flues 5, the port of export 4 by-pass flues 5 being connected to a SCR denitration reactor Isosorbide-5-Nitrae platform SCR denitration reactor 1 is all connected with air preheater 3 by exhaust uptake 6; Described 4 by-pass flues 5 are equipped with flue gas flow control device 7.Economizer 8 is provided with in described main chimney flue 4.Main chimney flue 4 is provided with flue gas flow detector 12.The load of 4 SCR denitration reactors 1 is 25%.
As shown in Figure 2, flue gas flow control device 7 comprises baffle plate 9, connecting axle 10 and drive motors 11, and baffle plate 9 is located in by-pass flue 5, and baffle plate 9 is connected with drive motors 11 by connecting axle 10.
Operation principle of the present utility model: first the flue gas that coal-burning boiler 2 produces enters main chimney flue 4, the effect decline low temperature of the economizer 8 in main chimney flue 4, then 4 by-pass flues 5 are entered respectively, by by-pass flue 5 enter 4 loads be 25% SCR denitration reactor 1 in carry out denitration, dedusting, the flue gas after process enters air preheater 3 through exhaust uptake 6.
Flue gas flow in flue gas flow detector 12 Real-Time Monitoring main chimney flue 4, when unit load be 50% and following time, flue gas flow reduces, flue gas flow detector 12 is (not shown to control system, control system is routine techniques), control system controls drive motors 11 and works, and closes 2 SCR denitration reactors 1.When unit load is more than 50%, 4 SCR denitration reactors 1 work simultaneously.
Claims (5)
1. a controllable type denitration reaction system, comprise SCR denitration reactor (1), coal-burning boiler (2) and air preheater (3), it is characterized in that: coal-burning boiler (2) is provided with main chimney flue (4), main chimney flue (4) is connected with 4 by-pass flues (5), 4 by-pass flues (5) are connected to a SCR denitration reactor (1), the port of export of 4 SCR denitration reactors (1) is all connected with air preheater (3) by exhaust uptake (6); Described 4 by-pass flues (5) are equipped with flue gas flow control device (7).
2. a kind of controllable type denitration reaction system according to claim 1, is characterized in that: be provided with economizer (8) in described main chimney flue (4).
3. a kind of controllable type denitration reaction system according to claim 1, it is characterized in that: described flue gas flow control device (7) comprises baffle plate (9), connecting axle (10) and drive motors (11), baffle plate (9) is located in by-pass flue (5), and baffle plate (9) is connected with drive motors (11) by connecting axle (10).
4. a kind of controllable type denitration reaction system according to claim 1 or 2 or 3, is characterized in that: main chimney flue (4) is provided with flue gas flow detector (12).
5. a kind of controllable type denitration reaction system according to claim 4, is characterized in that: the load of described 4 SCR denitration reactors (1) is 25%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520353953.6U CN204672141U (en) | 2015-05-28 | 2015-05-28 | A kind of controllable type denitration reaction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520353953.6U CN204672141U (en) | 2015-05-28 | 2015-05-28 | A kind of controllable type denitration reaction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204672141U true CN204672141U (en) | 2015-09-30 |
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| CN201520353953.6U Active CN204672141U (en) | 2015-05-28 | 2015-05-28 | A kind of controllable type denitration reaction system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549633A (en) * | 2016-01-22 | 2016-05-04 | 南通亚泰工程技术有限公司 | SCR flue gas flow adjustment system and reactor for exhaust processing of marine diesel engine |
-
2015
- 2015-05-28 CN CN201520353953.6U patent/CN204672141U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549633A (en) * | 2016-01-22 | 2016-05-04 | 南通亚泰工程技术有限公司 | SCR flue gas flow adjustment system and reactor for exhaust processing of marine diesel engine |
| CN105549633B (en) * | 2016-01-22 | 2019-12-10 | 南通亚泰工程技术有限公司 | SCR flue gas flow regulating system and reactor for exhaust treatment of marine diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100160 Beijing, Fengtai District Automobile Museum Road, No. 6, Ying Kun century A block, floor 11 Patentee after: CHINA HUADIAN ENGINEERING CO., LTD. Patentee after: Huadian Environmental Protection System Engineering Co., Ltd. Address before: 100160 Beijing, Fengtai District Automobile Museum Road, No. 6, Ying Kun century A block, floor 11 Patentee before: China Huadian Engineering (Group) Co., Ltd. Patentee before: Huadian Environmental Protection System Engineering Co., Ltd. |