CN202506301U - Adverse-flow ammonia spraying device for selective catalytic reduction (SCR) denitration device - Google Patents
Adverse-flow ammonia spraying device for selective catalytic reduction (SCR) denitration device Download PDFInfo
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- CN202506301U CN202506301U CN2012201126713U CN201220112671U CN202506301U CN 202506301 U CN202506301 U CN 202506301U CN 2012201126713 U CN2012201126713 U CN 2012201126713U CN 201220112671 U CN201220112671 U CN 201220112671U CN 202506301 U CN202506301 U CN 202506301U
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- flue gas
- flue
- ammonia
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- spraying device
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Abstract
The utility model discloses an adverse-flow ammonia spraying device for a selective catalytic reduction (SCR) denitration device. The adverse-flow ammonia spraying device comprises a flue (6) and a denitration reactor (5) which is connected with the flue (6); an ammonia spraying grid (1), a flue gas mixer (2) and a flow guide plate (3) are sequentially arranged in the flue (6) in a direction which is reverse to the inlet direction of flue gas; and the connection part of the flue (6) and the denitration reactor (5) is provided with a flue gas rectifying device (4). According to the adverse-flow ammonia spraying device, the direction of ammonia sprayed by the ammonia spraying grid is reverse to the inlet direction of the flue gas, the ammonia and the flue gas are fully mixed in the flue gas mixer, and the mixed flue gas uniformly enters the denitration reactor under the action of the flow guide plate and the flue gas rectifying device, so that the flue gas and the ammonia can be fully mixed, the distance of the ammonia mixing area is reduced, the length of the connected flue is reduced, the manufacturing cost of equipment is reduced, a system is smooth in distribution, the flow field of the flue gas is uniform in distribution, and the resistance of the system is reduced.
Description
Technical field
The utility model relates to a kind of ammonia-gas spraying device of the SCR of being used for denitrification apparatus, particularly a kind of adverse current ammonia-gas spraying device that is used for the SCR denitrification apparatus.
Background technology
At present, the ammonia direction of the ammonia-spraying grid of the conventional ammonia-gas spraying device that is used for SCR denitrification apparatus ejection is consistent with the flue gas approach axis mixes, and behind the flue gas blender, fully mixes then, and mixed flue gas is even entering Benitration reactor under the deflector effect.This kind mode makes flue gas more insufficient with mixing of ammonia, and flue gas flow field distributes more inhomogeneous, and SR is big; Also need long Mixed Zone, cause flue longer, the equipment manufacturing cost cost is high.
The utility model content
The purpose of the utility model is, a kind of adverse current ammonia-gas spraying device of the SCR of being used for denitrification apparatus is provided.The utility model can make flue gas fully mix with ammonia, and flue gas flow field is even, and SR is less, can also reduce the cost cost.
The technical scheme of the utility model: a kind of adverse current ammonia-gas spraying device that is used for the SCR denitrification apparatus; It is characterized in that: the Benitration reactor that comprises flue and connection flue; Be provided with spray ammonia direction and reverse ammonia-spraying grid, flue gas blender and the deflector of flue gas approach axis successively by the flue gas approach axis in the flue, the junction of flue and Benitration reactor is provided with the flue gas fairing.
The aforesaid adverse current ammonia-gas spraying device that is used for the SCR denitrification apparatus, described flue gas fairing height is 200～1000mm.
Compared with prior art, the utility model adopts the ammonia direction of ammonia-spraying grid ejection opposite with the flue gas approach axis, then with behind the flue gas blender fully mixes; Mixed flue gas evenly gets into Benitration reactor under deflector and the effect of flue gas fairing, flue gas is more fully mixed with ammonia, has reduced ammonia Mixed Zone distance simultaneously; Connect the flue contraction in length, equipment manufacturing cost reduces, and system layout is smooth and easy; Flue gas flow field is evenly distributed, and SR reduces.The utility model also has the characteristics simple in structure and easy to use of implementing.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Being labeled as in the accompanying drawing: 1-ammonia-spraying grid, 2-flue gas blender, 3-deflector, 4-flue gas fairing, 5-Benitration reactor, 6-flue.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described, but not as the foundation to the utility model restriction.
Embodiment.A kind of adverse current ammonia-gas spraying device that is used for the SCR denitrification apparatus; Constitute as shown in Figure 1; The Benitration reactor 5 that comprises flue 6 and connection flue 6; Be provided with spray ammonia direction and reverse ammonia-spraying grid 1, flue gas blender 2 and the deflector 3 of flue gas approach axis successively by the flue gas approach axis in the flue 6, flue 5 is provided with flue gas fairing 4 with the junction of Benitration reactor 5.Wherein arrow is the flue gas approach axis.
Reasonable is that it is 200～1000mm that described flue gas fairing 4 height can adopt.
The utility model gets into boiler smoke in use from flue 6 import departments, mix with flue gas through ammonia-spraying grid 1 reverse spray ammonia then; Fully mix through flue gas blender 2 backs, mixed flue gas evenly gets into Benitration reactor 5 under deflector 3 and 4 effects of flue gas fairing can make flue gas more fully mix with ammonia, has reduced ammonia Mixed Zone distance simultaneously again; Connect the flue contraction in length, equipment manufacturing cost reduces, and system layout is smooth and easy; Flue gas flow field is evenly distributed, and SR reduces.The utility model also has the characteristics simple in structure and easy to use of implementing.
Claims (2)
1. adverse current ammonia-gas spraying device that is used for the SCR denitrification apparatus; It is characterized in that: the Benitration reactor (5) that comprises flue (6) and connection flue (6); Be provided with spray ammonia direction and reverse ammonia-spraying grid (1), flue gas blender (2) and the deflector (3) of flue gas approach axis successively by the flue gas approach axis in the flue (6), flue (5) is provided with flue gas fairing (4) with the junction of Benitration reactor (5).
2. the adverse current ammonia-gas spraying device that is used for the SCR denitrification apparatus according to claim 1 is characterized in that: described flue gas fairing (4) highly is 200～1000mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201126713U CN202506301U (en) | 2012-03-23 | 2012-03-23 | Adverse-flow ammonia spraying device for selective catalytic reduction (SCR) denitration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201126713U CN202506301U (en) | 2012-03-23 | 2012-03-23 | Adverse-flow ammonia spraying device for selective catalytic reduction (SCR) denitration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202506301U true CN202506301U (en) | 2012-10-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201126713U Expired - Lifetime CN202506301U (en) | 2012-03-23 | 2012-03-23 | Adverse-flow ammonia spraying device for selective catalytic reduction (SCR) denitration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202506301U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105381715A (en) * | 2015-12-15 | 2016-03-09 | 浙江百能科技有限公司 | Counter-current ammonia spraying mixer |
| CN108889118A (en) * | 2018-09-21 | 2018-11-27 | 南京兰丰环保科技有限公司 | A kind of SCR equipment for denitrifying flue gas |
| CN110833743A (en) * | 2018-08-17 | 2020-02-25 | 英特佳工程与环境技术有限公司 | Adsorber and method for exhaust gas purification |
-
2012
- 2012-03-23 CN CN2012201126713U patent/CN202506301U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105381715A (en) * | 2015-12-15 | 2016-03-09 | 浙江百能科技有限公司 | Counter-current ammonia spraying mixer |
| CN110833743A (en) * | 2018-08-17 | 2020-02-25 | 英特佳工程与环境技术有限公司 | Adsorber and method for exhaust gas purification |
| CN108889118A (en) * | 2018-09-21 | 2018-11-27 | 南京兰丰环保科技有限公司 | A kind of SCR equipment for denitrifying flue gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |