CN105344244B - A kind of denitrating flue gas gyration catalytic bed - Google Patents
A kind of denitrating flue gas gyration catalytic bed Download PDFInfo
- Publication number
- CN105344244B CN105344244B CN201510736483.6A CN201510736483A CN105344244B CN 105344244 B CN105344244 B CN 105344244B CN 201510736483 A CN201510736483 A CN 201510736483A CN 105344244 B CN105344244 B CN 105344244B
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- Prior art keywords
- gyration
- catalytic bed
- flue
- catalyst plates
- concurrent heating
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- 230000003197 catalytic effect Effects 0.000 title claims abstract description 46
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000003546 flue gas Substances 0.000 title claims abstract description 28
- 239000003054 catalyst Substances 0.000 claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 239000000779 smoke Substances 0.000 claims abstract description 11
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 10
- 238000005192 partition Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 239000000428 dust Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention belongs to environmental protection technical field, it is related to denitration of boiler smoke device, specifically a kind of denitrating flue gas gyration catalytic bed, it is mainly characterized by improving existing catalytic bed and installation site, fixed catalytic bed is changed to gyration catalytic bed, flue after deduster is intersegmental, flue enter cigarette section, smoke section, circular passage is constituted between two end housings and internal partition, circular passage is divided into the SCR reaction zones at middle part by catalyst plates, the front and rear closing concurrent heating area at two ends, on two end housings concurrent heating pipeline is provided with and communicated with closing concurrent heating area, compared with prior art, with extension catalyst plates service life, save great number cost, to flue gas overall process, high efficiency, the remarkable advantage of high-quality denitration.
Description
Technical field
The invention belongs to environmental protection technical field, is related to a kind of equipment for denitrifying flue gas, and specifically a kind of flue gas takes off
Nitre gyration catalytic bed.
Background technology
In the flue gas that fuel combustion is produced, containing nitrogen oxide, nitrogen oxide is a kind of environmentally harmful gas.
The particularly flue gas of some such as coal, it is desirable to could be discharged after denitration process.
Existing denitration method for flue gas, using selective catalytic reduction（SCR）, nitrogen oxide is with reactant in special type
Under the conditions of catalyst and certain active temperature, react, harmful nitrogen oxides is reduced into harmless nitrogen.
According to above-mentioned denitration method for flue gas, prior art, which is used, is arranged on the catalyst plates row of vertical parallel dense arrangement
In fixed catalytic bed, fixed catalytic bed is arranged in the high temperature cigarette of flue section, flue gas self heat is relied on, high temperature section by
In the flue before smoke duster, the non-removing dust of flue gas contains a large amount of dust, the easily table to expensive catalyst plates
Surface catalysis oxidant layer causes to damage dirty, has a strong impact on the service life and catalytic denitration effect of the catalyst plates of costliness.Work as boiler startup
Or during underrun, turn into low-temperature flue gas section in the high temperature section of flue, it is impossible to ensure the active temperature of catalyst, cause to take off
Nitre operation normally can not be carried out effectively.
A kind of selective reduction method using existing catalyst is explored, it is current to implement the new catalytic bed of denitration to flue gas
Technical task urgently to be resolved hurrily.
The content of the invention
The purpose of the invention, which is to explore, utilizes existing catalyst plates, proposes that a kind of denitrating flue gas is catalyzed with gyration
Bed, can overcome the catalyst plates of the catalytic bed of prior art presence easily to damage dirty by the dust in high-temperature flue gas, low-temperature flue gas
When it cannot be guaranteed that the defect of normal denitration.
The invention adopts the technical scheme that a kind of denitrating flue gas gyration catalytic bed of design, and structure includes：Urge
Change bed, catalyst plates are arranged, wherein, catalytic bed is using the transmission guipure that gyration is set between two rotary shafts, catalyst plates arrangement
It is located on the transmission guipure of gyration, constitutes gyration catalytic bed, the flue that gyration catalytic bed is laid in after deduster is intersegmental, in cigarette
Road enters cigarette section, smoke section and the outer end of gyration catalytic bed and sets end enclosure respectively, inner end and end in two rotary shafts
Internal partition is set respectively in portion's shell, and flue enters between cigarette section, the smoke section of flue, two secondary end enclosures and internal partition
Gyration catalytic bed circular passage is constituted, circular passage is divided into catalyst plates in the middle part of gyration catalytic bed and communicated with flue by catalyst plates
SCR reaction zones, the preceding closing concurrent heating area between the outer end catalyst plates of gyration catalytic bed two and end enclosure, internal partition and
Rear enclosed concurrent heating area, connects with forward and backward closing concurrent heating area and is correspondingly provided with forward and backward concurrent heating pipeline respectively in two secondary end enclosures
With the outlet of weary gas.
The catalyst plates of the catalyst plates row are tortuous.
The concurrent heating pipeline can be the concurrent heating pipeline that external heat source is attracted.
The invention is using this denitrating flue gas gyration catalytic bed designed by above-mentioned technical proposal, due to that will fix
Catalytic bed be changed to the gyration catalytic bed, while gyration catalytic bed mounting arrangements are entered into cigarette flue after deduster again
Between, the flue gas so into catalytic bed reaction zone have passed through deduster dedusting in advance, reduce the dust in flue gas to catalyst
The damage of plate is dirty；Flue gas after denitration is discharged from flue smoke section；Catalytic bed is changed to after gyration mode, and catalyst plates are arranged with catalytic bed
Behind the outer end for running to two rotary shafts, catalyst plates row is changed into radial manner, catalyst plates from vertical parallel dense arrangement
Sealing broadens between catalyst plates, in the process of running, and the hot gas that concurrent heating pipeline is attracted can also make between catalyst plates plate stitch
A small amount of dust can shed will not contamination, do not result in dirty to the damage of catalyst plates yet；Outside attracts heat source can not only be right
Operating catalyst plates are fed to suitable temperature in reaction zone, and at boiler startup stage or underrun,
Catalyst plates can be just preheating to suitable temperature, denitration is carried out to flue gas in time, it is ensured that denitration is from beginning to end；Two before and after setting
Individual closing concurrent heating area, can make the catalyst plates in gyration catalytic bed feed the heat of preference temperature in time after gyration is reacted and is exchanged heat
Amount, it is ensured that catalyst plates can continuous effective catalytic denitration in reaction zone.Compared with prior art, with extension catalyst plates row
Service life, catalyst plates are fairly expensive, have saved great number cost, have improved denitration efficiency and effect to flue gas, realize
To the overall process of boiler smoke, high efficiency, high-quality, inexpensive denitration, with significant advantage.
Brief description of the drawings
Fig. 1 represents a kind of denitrating flue gas gyration catalytic bed general structure schematic diagram of the invention.
Fig. 2 is Fig. 1 A-A to structural representation.
Embodiment
In conjunction with the accompanying drawings and embodiments, the concrete structure of the invention is further illustrated.
A kind of embodiment of the invention denitrating flue gas gyration catalytic bed, referring to Fig. 1, Fig. 2, its structure includes：Urge
Change bed 1, catalyst plates row 2, wherein, catalytic bed 1 using between two main driven rotating shafts 6,8 set gyration transmission guipure or
Caterpillar chain band 3, catalyst plates row 2 is laid on the transmission guipure of gyration, constitutes gyration catalytic bed, gyration catalytic bed, which is laid in, to be removed
Flue after dirt device 12 is intersegmental, enters in flue between cigarette section, smoke section and the outer end of gyration catalyst bed and sets end respectively
Portion's shell 4,10, set internal partition 5,9 respectively in the inner end and end enclosure of two rotary shafts, and flue enters cigarette section
11st, gyration catalytic bed circular passage, annular are constituted between the secondary end enclosure 4,10 of smoke section 7, two and internal partition 5,9 of flue
Passage is divided into outside SCR reaction zones I, the outer end of gyration catalytic bed two and the end communicated in the middle part of gyration catalytic bed levels with flue
Preceding closing concurrent heating area II and rear enclosed concurrent heating area III between shell, internal partition, in two secondary end enclosures respectively with forward and backward envelope
Close the connection of concurrent heating area and be correspondingly provided with front and rear concurrent heating pipeline 14,16 and weary gas outlet 13,15.
Wherein concurrent heating pipeline 14,16 be the outside heat source concurrent heating pipeline attracted.
Claims (2)
1. a kind of denitrating flue gas gyration catalytic bed, structure includes：Catalytic bed, catalyst plates row, it is characterized in that catalytic bed is used
The transmission guipure of gyration is set between two rotary shafts, and catalyst plates arrangement is located on the transmission guipure of gyration, is constituted gyration and is urged
Change bed, the flue that gyration catalytic bed is laid in after deduster is intersegmental, flue enter cigarette section, smoke section and gyration catalytic bed outside
End sets end enclosure respectively, and internal partition is set respectively in the inner end and end enclosure of two rotary shafts, flue
Enter between cigarette section, the smoke section of flue, two secondary end enclosures and internal partition and constitute gyration catalytic bed circular passage, catalyst plates
Circular passage is divided into the SCR reaction zones, the outer end of gyration catalytic bed two that catalyst plates are communicated with flue in the middle part of gyration catalytic bed
Preceding closing concurrent heating area and rear enclosed concurrent heating area between catalyst plates and end enclosure, internal partition, in two secondary end enclosures
Connected respectively with forward and backward concurrent heating area and be correspondingly provided with forward and backward closing concurrent heating pipeline and the outlet of weary gas.
2. a kind of denitrating flue gas gyration catalytic bed according to claim 1, it is characterized in that the catalyst of catalyst plates row
Plate is tortuous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510736483.6A CN105344244B (en) | 2015-11-04 | 2015-11-04 | A kind of denitrating flue gas gyration catalytic bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510736483.6A CN105344244B (en) | 2015-11-04 | 2015-11-04 | A kind of denitrating flue gas gyration catalytic bed |
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| Publication Number | Publication Date |
|---|---|
| CN105344244A CN105344244A (en) | 2016-02-24 |
| CN105344244B true CN105344244B (en) | 2017-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510736483.6A Active CN105344244B (en) | 2015-11-04 | 2015-11-04 | A kind of denitrating flue gas gyration catalytic bed |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113441002B (en) * | 2021-07-01 | 2023-01-03 | 重庆大学 | Flue gas denitration device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5268859A (en) * | 1975-12-08 | 1977-06-08 | Shokubai Kasei Kogyo Kk | Purifying method of gas containing combustible substance in low ceonce ntration |
| CN201534059U (en) * | 2009-06-12 | 2010-07-28 | 北京中电联环保工程有限公司 | Renewable heat-accumulating type selective catalytic reduction denitration device |
| CN104923017A (en) * | 2015-06-05 | 2015-09-23 | 珠海格力电器股份有限公司 | Gas treatment device and control method thereof |
| CN205127748U (en) * | 2015-11-04 | 2016-04-06 | 张玉伟 | Flue gas denitration moves catalysis bed with ring |
-
2015
- 2015-11-04 CN CN201510736483.6A patent/CN105344244B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5268859A (en) * | 1975-12-08 | 1977-06-08 | Shokubai Kasei Kogyo Kk | Purifying method of gas containing combustible substance in low ceonce ntration |
| CN201534059U (en) * | 2009-06-12 | 2010-07-28 | 北京中电联环保工程有限公司 | Renewable heat-accumulating type selective catalytic reduction denitration device |
| CN104923017A (en) * | 2015-06-05 | 2015-09-23 | 珠海格力电器股份有限公司 | Gas treatment device and control method thereof |
| CN205127748U (en) * | 2015-11-04 | 2016-04-06 | 张玉伟 | Flue gas denitration moves catalysis bed with ring |
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| Publication number | Publication date |
|---|---|
| CN105344244A (en) | 2016-02-24 |
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| C06 | Publication | ||
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| CB03 | Change of inventor or designer information |
Inventor after: Zhang Yuwei Inventor after: Zhang Jianbiao Inventor before: Zhang Yuwei |
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| TR01 | Transfer of patent right |
Effective date of registration: 20240513 Address after: 473000 Wangcun Township, Wolong District, Nanyang City, Henan Province, 500 meters east of the intersection of Xinchen West Road and Wang'an Road, North Nanyang Yuxin Machinery Equipment Co., Ltd., 1st floor of the yard Patentee after: NANYANG CHANGGONG MACHINERY TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 473000 Yadian Family Courtyard, Tianshan Road, Wancheng District, Nanyang City, Henan Province Patentee before: Zhang Yuwei Country or region before: China |
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| TR01 | Transfer of patent right |