CN204395633U - A kind of SCR denitrating flue gas pre-dedusting device - Google Patents
A kind of SCR denitrating flue gas pre-dedusting device Download PDFInfo
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- CN204395633U CN204395633U CN201520187192.1U CN201520187192U CN204395633U CN 204395633 U CN204395633 U CN 204395633U CN 201520187192 U CN201520187192 U CN 201520187192U CN 204395633 U CN204395633 U CN 204395633U
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- flue
- flue gas
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- dedusting device
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Abstract
The utility model relates to flue gas ash removal field, particularly a kind of SCR denitrating flue gas pre-dedusting device.This SCR denitrating flue gas pre-dedusting device, it is characterized in that: comprise the preposition ash bucket, the first horizontal flue, uptake flue, the second horizontal flue and the SCR reactor that connect successively, the air outlet place of described preposition ash bucket arranges the grey deflector of gear, inner-walls of duct bottom the import department of described first horizontal flue is provided with dust-proof plate, in described uptake flue, ammonia-spraying grid is installed, installing homogenating plate near air inlet place in described SCR reactor, is denitrating catalyst below homogenating plate.The utility model structure is simple, crushing is little, efficiency of dust collection is high, keep off the setting of grey deflector and dust board, both larger dust can have been made to drop in ash bucket discharge outside, do not affect again the flow stability of the flue gas of unit, the generation preventing catalyst dust stratification to block, extends the service life of catalyst.
Description
Technical field
The present invention relates to flue gas ash removal field, particularly a kind of SCR denitrating flue gas pre-dedusting device.
Background technology
SCR reactor is arranged between boiler economizer and air preheater, flue gas is without dedusting, because the dust concentration in flue gas is larger, easily cause catalyst abrasion and poisoning, shorten the easy dust stratification in reactor chimney intake pars infrasegmentalis elbow on the other hand in service life of catalyst, hinder flue gas fluid, even blowing out can be caused when dust stratification is serious, lose huge, in order to solve the problem, domestic to SCR flue gas pre-dedusting device carried out some research.
The Chinese patent CN2012105355078 deashing device disclosed in a kind of SCR flue gas denitrification system passes through to expand ash bucket and horizontal flue size, horizontal flue arranges dust block board and blowing pipe can remove part dust stratification, alleviate the impact of flying dust on catalyst, but efficiency of dust collection is lower, expansion ash bucket and horizontal flue are by increase investment and floor space, horizontal flue dimension enlargement, dust is easily caused to deposit in flue, cause flue blockage, in horizontal flue elbow, blowing pipe is set, blowing toward horizontal pipe easily causes flue-gas temperature to reduce, thus cause catalyst low temperature poisoning.The equipment for denitrifying flue gas that Chinese patent CN2011101163534 discloses control puffed rice ash blocking catalyst arranges ash bucket in Reactor inlet pars infrasegmentalis elbow; at flue vertical section, wire netting ash disposal is installed; this device can go out part bulky grain dust stratification; but reach higher efficiency of dust collection; need the larger pressure loss; this will cause power consumption and operating cost to increase, and if wire netting irregularly cleaning easily result in blockage, make denitrating system cannot stable operation.Some technique is then on flue, add some baroque deduster and ash buckets, causes voltage loss large, affect the stability of flow of flue gas, and cost of investment is also higher.
Summary of the invention
The present invention, in order to make up the defect of prior art, provides and does not a kind ofly change conventional denitrating technique and arrange and line size and the SCR denitrating flue gas pre-dedusting device that structure is simple, crushing is little, efficiency of dust collection is high.
The present invention is achieved through the following technical solutions:
A kind of SCR denitrating flue gas pre-dedusting device, it is characterized in that: comprise the preposition ash bucket, the first horizontal flue, uptake flue, the second horizontal flue and the SCR reactor that connect successively, the air outlet place of described preposition ash bucket arranges the grey deflector of gear, inner-walls of duct bottom the import department of described first horizontal flue is provided with dust-proof plate, in described uptake flue, ammonia-spraying grid is installed, installing homogenating plate near air inlet place in described SCR reactor, is denitrating catalyst below homogenating plate.
The working face of the grey deflector of described gear is the taper surface of laterally evenly arrangement, and for leading ash-pit between two adjacent taper surfaces, bottom is gripper shoe.
The grey deflector of described gear is downward-sloping; be 30-50 ° with the angle of horizontal plane, be greater than the stocking angle of dust, after the dust in flue gas clashes into the grey deflector of gear; what fly ash granule accumulated to dust block board leads in ash-pit, and fly ash granule is discharged to outside by gravity along leading after ash-pit drops to ash bucket.
Described first horizontal flue is connected by elbow with SCR reactor person of outstanding talent with the second horizontal flue, the second horizontal flue with uptake flue, uptake flue, described elbow inside is provided with deflector, play and prevent elbow dust stratification, elbow from wearing and tearing and all wind actions, ensure that the stability of system.
The structure of described deflector is leading portion is dull and stereotyped, and rear end is quarter circular arc structure, and this structure can be more even by smoke distribution.
Described denitrating catalyst is corrugated plating catalyst.
The invention has the beneficial effects as follows: SCR denitrating flue gas pre-dedusting device of the present invention, structure is simple, crushing is little, efficiency of dust collection is high, arrange and line size without the need to changing conventional denitrating technique, effectively can reduce investment and the operating cost of SCR denitration system, keep off the setting of grey deflector and dust board, larger dust both can have been made to drop in ash bucket and discharged outside, not affect again the flow stability of the flue gas of unit, the generation preventing catalyst dust stratification to block, extends the service life of catalyst.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Accompanying drawing 1 is the structural representation of a kind of SCR denitrating flue gas of the present invention pre-dedusting device;
The plan structure schematic diagram of accompanying drawing 2 grey deflector for the present invention keeps off;
The main TV structure schematic diagram of accompanying drawing 3 grey deflector for the present invention keeps off;
Accompanying drawing 4 is the structural representation of deflector of the present invention.
In figure, 1, preposition ash bucket, 2, keep off grey deflector, 3, dust-proof plate, the 4, first horizontal flue, 5, deflector, 6, ammonia-spraying grid, 7, uptake flue, 8, elbow, 9, the second horizontal flue, 11, SCR reactor, 12, homogenating plate, 13, corrugated plating catalyst, 2-1, taper dust block board, 2-2, lead ash-pit, 2-3 gripper shoe.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated, but be not used for limiting the scope of the invention.
As shown in Figure 1, a kind of SCR denitrating flue gas of the present invention pre-dedusting device, comprise the preposition ash bucket 1 connected successively, first horizontal flue 4, uptake flue 7, second horizontal flue 9 and SCR reactor 11, the air outlet place of described preposition ash bucket 1 arranges the grey deflector 2 of gear, the working face keeping off grey deflector 2 is the taper surface of laterally evenly arrangement, for leading ash-pit 2-2 between two adjacent taper surfaces, bottom is gripper shoe 2-3, keep off grey deflector 2 downward-sloping, be 30-50 ° with the angle of horizontal plane, be greater than the stocking angle of dust, after dust in flue gas clashes into the grey deflector 2 of gear, fly ash granule accumulates to leads in ash-pit 2-2, fly ash granule is discharged to outside by gravity along leading after ash-pit 2-2 drops to preposition ash bucket 1, inner-walls of duct bottom the import department of described first horizontal flue 4 is provided with dust-proof plate 3, in described uptake flue 7, ammonia-spraying grid 6 is installed, near air inlet place, homogenating plate 12 is installed in described SCR reactor 11, it is corrugated plating catalyst 13 below homogenating plate 12, first horizontal flue 4 and uptake flue 7, uptake flue 7 and the second horizontal flue 9, second horizontal flue 9 is connected by elbow 8 with SCR reactor 11, described elbow 8 inside is provided with deflector 5, the structure of deflector 5 is for being flat board for leading portion, rear end is quarter circular arc structure, play and prevent elbow 8 dust stratification, elbow wearing and tearing and equal wind action, ensure that the stability of system.
During SCR denitrating flue gas pre-dedusting device work of the present invention, pending flue gas enters preposition ash bucket 1 from economizer exit, owing to clashing into the gear ash deflector 2 be arranged in preposition ash bucket 1, granule dust in flue gas loses kinetic energy, fall on the grey deflector 2 of gear, under the effect of taper dust block board 2-1, dust accumulates to leads in ash-pit 2-2, owing to keeping off grey deflector 2, certain angle is installed, the dust of leading in ash-pit 2-2 is slipped down in preposition ash bucket 1 discharge, so just achieve being separated of flue gas and granule dust, the first horizontal flue 4 is entered by the flue gas of pre-dedusting, first horizontal flue 4 import arranges dust-proof plate 3, prevent flue gas from being taken away by the dust in preposition ash bucket 1, first horizontal flue 4 and uptake flue 7 elbow 8 place are provided with deflector 5, deflector 5 plays and prevents dust at elbow dust stratification, ensure that the stability of system, flue gas enters SCR reactor 11 through the second horizontal flue 9 after being mixed by the ammonia that ammonia-spraying grid 6 sprays, under the effect of catalyst 13, complete denitration reaction, flue gas after purification discharges SCR reactor 11, uptake flue 7 and the second horizontal flue 9 arrange deflector 5, the effect of deflector 5 prevents elbow from wearing and tearing, SCR reactor 11 air inlet arranges deflector 5 and homogenating plate 12, the acting in conjunction of deflector 5 and homogenating plate 12 ensures that gas uniform enters corrugated plating catalyst 13, prevent corrugated plating catalyst 13 from wearing and tearing, improve the denitration efficiency of corrugated plating catalyst 13.
SCR denitrating flue gas pre-dedusting device of the present invention, structure is simple, crushing is little, efficiency of dust collection is high, arrange and line size without the need to changing conventional denitrating technique, effectively can reduce investment and the operating cost of SCR denitration system, keep off the setting of grey deflector and dust board, larger dust both can have been made to drop in ash bucket and discharged outside, not affect again the flow stability of the flue gas of unit, the generation preventing catalyst dust stratification to block, extends the service life of catalyst.
Claims (6)
1. a SCR denitrating flue gas pre-dedusting device, it is characterized in that: comprise the preposition ash bucket (1) connected successively, first horizontal flue (4), uptake flue (7), second horizontal flue (9) and SCR reactor (11), the air outlet place of described preposition ash bucket (1) arranges the grey deflector of gear (2), inner-walls of duct bottom the import department of described first horizontal flue (4) is provided with dust-proof plate (3), ammonia-spraying grid (6) is installed in described uptake flue (7), near air inlet place, homogenating plate (12) is installed in described SCR reactor (11), homogenating plate (12) below is denitrating catalyst (13).
2. a kind of SCR denitrating flue gas pre-dedusting device according to claim 1, it is characterized in that: the working face of the grey deflector of described gear (2) is the taper surface of laterally evenly arrangement, for leading ash-pit (2-2) between two adjacent taper surfaces, bottom is gripper shoe (2-3).
3. a kind of SCR denitrating flue gas pre-dedusting device according to claim 1, it is characterized in that: the grey deflector of described gear (2) is downward-sloping, is 30-50 ° with the angle of horizontal plane.
4. a kind of SCR denitrating flue gas pre-dedusting device according to claim 1, it is characterized in that: described first horizontal flue (4) is connected by elbow (8) with SCR reactor (11) with the second horizontal flue (9), the second horizontal flue (9) with uptake flue (7), uptake flue (7), and described elbow (8) inside is provided with deflector (5).
5. a kind of SCR denitrating flue gas pre-dedusting device according to claim 4, is characterized in that: the structure of described deflector (5) is leading portion is dull and stereotyped, and rear end is quarter circular arc structure.
6. a kind of SCR denitrating flue gas pre-dedusting device according to claim 1, is characterized in that: described denitrating catalyst (13) is corrugated plating catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520187192.1U CN204395633U (en) | 2015-03-31 | 2015-03-31 | A kind of SCR denitrating flue gas pre-dedusting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520187192.1U CN204395633U (en) | 2015-03-31 | 2015-03-31 | A kind of SCR denitrating flue gas pre-dedusting device |
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| CN204395633U true CN204395633U (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520187192.1U Expired - Fee Related CN204395633U (en) | 2015-03-31 | 2015-03-31 | A kind of SCR denitrating flue gas pre-dedusting device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785020A (en) * | 2015-03-31 | 2015-07-22 | 山东鑫源环保工程技术有限公司 | SCR flue gas denitration dust pre-removing device |
| CN106390608A (en) * | 2016-11-16 | 2017-02-15 | 东方电气集团东方锅炉股份有限公司 | Pre-dedusting device for SCR denitration |
| CN108392983A (en) * | 2018-04-25 | 2018-08-14 | 苏州西热节能环保技术有限公司 | A kind of SCR equipment for denitrifying flue gas with accumulatingdust guide functions |
| CN112354359A (en) * | 2020-09-27 | 2021-02-12 | 苏州西热节能环保技术有限公司 | Fly ash uniform dispersion device for top of SCR reactor |
| CN114177751A (en) * | 2021-12-20 | 2022-03-15 | 华能安阳热电有限责任公司 | Thermal power plant is with system of selling off |
| CN114272709A (en) * | 2021-11-10 | 2022-04-05 | 浙江华兴玻璃有限公司 | Novel integrated process for denitration, desulfurization and dust removal of ceramic tube and matched device |
-
2015
- 2015-03-31 CN CN201520187192.1U patent/CN204395633U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785020A (en) * | 2015-03-31 | 2015-07-22 | 山东鑫源环保工程技术有限公司 | SCR flue gas denitration dust pre-removing device |
| CN104785020B (en) * | 2015-03-31 | 2016-04-20 | 山东鑫源环保工程技术有限公司 | A kind of SCR denitrating flue gas pre-dedusting device |
| CN106390608A (en) * | 2016-11-16 | 2017-02-15 | 东方电气集团东方锅炉股份有限公司 | Pre-dedusting device for SCR denitration |
| CN106390608B (en) * | 2016-11-16 | 2018-05-25 | 东方电气集团东方锅炉股份有限公司 | A kind of pre-dedusting device for SCR denitration |
| CN108392983A (en) * | 2018-04-25 | 2018-08-14 | 苏州西热节能环保技术有限公司 | A kind of SCR equipment for denitrifying flue gas with accumulatingdust guide functions |
| CN108392983B (en) * | 2018-04-25 | 2023-09-19 | 苏州西热节能环保技术有限公司 | SCR flue gas denitrification facility with prevent deposition water conservancy diversion effect |
| CN112354359A (en) * | 2020-09-27 | 2021-02-12 | 苏州西热节能环保技术有限公司 | Fly ash uniform dispersion device for top of SCR reactor |
| CN114272709A (en) * | 2021-11-10 | 2022-04-05 | 浙江华兴玻璃有限公司 | Novel integrated process for denitration, desulfurization and dust removal of ceramic tube and matched device |
| CN114177751A (en) * | 2021-12-20 | 2022-03-15 | 华能安阳热电有限责任公司 | Thermal power plant is with system of selling off |
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| 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: 20150617 Termination date: 20180331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |