CN105344244A - Circulatory motion catalysis bed for flue gas denitration - Google Patents
Circulatory motion catalysis bed for flue gas denitration Download PDFInfo
- Publication number
- CN105344244A CN105344244A CN201510736483.6A CN201510736483A CN105344244A CN 105344244 A CN105344244 A CN 105344244A CN 201510736483 A CN201510736483 A CN 201510736483A CN 105344244 A CN105344244 A CN 105344244A
- Authority
- CN
- China
- Prior art keywords
- gyration
- catalytic bed
- flue gas
- flue
- catalyst plates
- Prior art date
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- Granted
Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000003546 flue gas Substances 0.000 title claims abstract description 31
- 238000006555 catalytic reaction Methods 0.000 title abstract description 10
- 239000003054 catalyst Substances 0.000 claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000005192 partition Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 230000003197 catalytic effect Effects 0.000 claims description 45
- 239000000779 smoke Substances 0.000 claims description 9
- 235000019504 cigarettes Nutrition 0.000 claims description 8
- 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
- 239000000428 dust Substances 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- -1 coal Chemical compound 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
- 230000007423 decrease Effects 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
- 230000007613 environmental effect Effects 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
- 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 the technical field of environment protection, relates to a boiler flue gas denitration device and concretely relates to a circulatory motion catalysis bed for flue gas denitration. The circulatory motion catalysis bed is characterized in that the existing catalysis bed and an installation position are improved, the fixed catalysis bed is changed into a circulatory motion catalysis bed, the circulatory motion catalysis bed is installed in a flue section behind a dust remover, a flue gas inlet section, a flue gas outlet section, housings at two ends and an inner partition plate of a flue form an annular passage, the annular passage is divided into a middle SCR reaction zone and front and rear sealed heating zones at two ends by a catalyst plate, and heating pipes are arranged on the housings at two ends and are communicated with the sealed heating zones. Compared with the existing catalysis bed, the circulatory motion catalysis bed prolongs a service life of the catalyst plate, saves a high cost and has the substantial advantage of whole-process, high-efficiency and high-quality denitration of flue gas.
Description
Technical field
The invention belongs to environmental protection technical field, relates to a kind of equipment for denitrifying flue gas, specifically a kind of denitrating flue gas gyration catalytic bed.
Background technology
In the flue gas that fuel combustion produces, containing nitrogen oxide, nitrogen oxide is a kind of environmentally harmful gas.Particularly some the flue gas such as coal, could discharge after requiring to carry out denitration process.
Existing denitration method for flue gas, adopts selective catalytic reduction (SCR), and nitrogen oxide and reactant, under extraordinary catalyst and certain active temperature condition, react, harmful reduction of nitrogen oxide is become harmless nitrogen.
According to above-mentioned denitration method for flue gas, prior art adopts and is arranged in fixing catalytic bed by the catalyst plates of vertical parallel dense arrangement row, fixing catalytic bed is arranged in the high temperature cigarette section of flue, rely on flue gas self heat, high temperature section due in the flue before smoke duster, flue gas without dedusting, containing a large amount of dust, very easily the surface catalysis oxidant layer of the catalyst plates of costliness is caused and damage dirt, have a strong impact on service life and the catalytic denitration effect of expensive catalyst plates.When boiler startup or underrun, in the high temperature section of flue, become low-temperature flue gas section, the active temperature of catalyst can not be ensured, cause denitration operation normally effectively not carry out.
Explore a kind of selective reduction method utilizing existing catalyst, new catalytic bed flue gas being implemented to denitration is technical task urgently to be resolved hurrily at present.
Summary of the invention
The object of the invention is that exploration utilizes existing catalyst plates, a kind of denitrating flue gas gyration catalytic bed is proposed, the catalyst plates that can overcome the catalytic bed that prior art exists easily is damaged dirty by the dust in high-temperature flue gas, can not ensure the defect of normal denitration during low-temperature flue gas.
The technical scheme that the invention is taked is a kind of denitrating flue gas gyration catalytic bed of design, structure comprises: catalytic bed, catalyst plates is arranged, wherein, catalytic bed adopts the transmission guipure arranging gyration between two turning cylinders, catalyst plates arrangement is located on the transmission guipure of gyration, form gyration catalytic bed, gyration catalytic bed be laid in deduster after flue intersegmental, cigarette section is entered at flue, the outer end of smoke section and gyration catalytic bed arranges end enclosure respectively, in the inner end and end enclosure of two turning cylinders, internal partition is set respectively, flue enter cigarette section, the smoke section of flue, gyration catalytic bed circular passage is formed between two secondary end enclosure and internal partition, circular passage is divided into the SCR reaction zone that in the middle part of gyration catalytic bed, catalyst plates communicates with flue by catalyst plates, gyration catalytic bed two outer end catalyst plates and end enclosure, front closed concurrent heating district between internal partition and rear enclosed concurrent heating district, respectively with front in two secondary end enclosure, before the connection of rear enclosed concurrent heating district is correspondingly provided with, rear concurrent heating pipeline and the outlet of weary gas.
The catalyst plates of described catalyst plates row is tortuous.
Described concurrent heating pipeline can be the concurrent heating pipeline that external heat source attracts.
The invention adopts this denitrating flue gas gyration catalytic bed designed by technique scheme, owing to changing fixing catalytic bed into described gyration catalytic bed, simultaneously again gyration catalytic bed mounting arrangements is entered between cigarette flue after deduster, the flue gas entering catalytic bed reaction zone like this have passed through deduster dedusting in advance, decreases the dust in flue gas dirty to the damage of catalyst plates; Flue gas after denitration is discharged from flue smoke section; After catalytic bed changes gyration mode into, after catalyst plates row runs to the outer end of two turning cylinders with catalytic bed, catalyst plates row becomes radial manner from vertical parallel dense arrangement, between catalyst plates and catalyst plates, sealing broadens, in running, the hot gas that concurrent heating pipeline attracts can also enable catalyst plates plate stitch between a small amount of dust shed can not contamination, also can not cause the damage of catalyst plates dirty; Outside attract heat source can not only to operating catalyst plates in reaction zone supply to suitable temperature, and when boiler startup stage or underrun, just can be preheating to suitable temperature to catalyst plates, in time denitration be carried out to flue gas, ensure denitration from start to finish; Former and later two closed concurrent heating districts are set, the heat of the timely supply preference temperature after gyration reaction and heat exchange of the catalyst plates in gyration catalytic bed can be made, ensure that catalyst plates can continuous effective catalytic denitration at reaction zone.Compared with prior art, have the service life of extending catalyst plate row, catalyst plates is quite expensive, save great number cost, improve the denitration efficiency to flue gas and effect, realize the overall process to boiler smoke, high efficiency, high-quality, low cost denitration, there is significant advantage.
Accompanying drawing explanation
Fig. 1 represents a kind of denitrating flue gas gyration of the invention catalytic bed general structure schematic diagram.
Fig. 2 is that the A-A of Fig. 1 is to structural representation.
Detailed description of the invention
In conjunction with the accompanying drawings and embodiments, the concrete structure of the invention is further illustrated.
The embodiment of a kind of denitrating flue gas gyration of the invention catalytic bed, see Fig. 1, Fig. 2, its structure comprises: catalytic bed 1, catalyst plates row 2, wherein, catalytic bed 1 adopts at two main driven rotating shafts 6, transmission guipure or the caterpillar chain band 3 of gyration are set between 8, catalyst plates row 2 is laid on the transmission guipure of gyration, form gyration catalytic bed, the flue that gyration catalytic bed is laid in after deduster 12 is intersegmental, cigarette section is entered at flue, between the outer end of smoke section and gyration catalyst bed, end enclosure 4 is set respectively, 10, in the inner end and end enclosure of two turning cylinders, internal partition 5 is set respectively, 9, flue enter cigarette section 11, the smoke section 7 of flue, two secondary end enclosure 4, 10 and internal partition 5, gyration catalytic bed circular passage is formed between 9, circular passage is divided into the SCR reaction zone I communicated with flue in the middle part of gyration catalytic bed levels, gyration catalytic bed two outer end and end enclosure, front closed concurrent heating district II between internal partition and rear enclosed concurrent heating district III, respectively with front in two secondary end enclosure, the connection of rear enclosed concurrent heating district is correspondingly provided with front and back concurrent heating pipeline 14, 16 and weary gas outlet 13, 15.
Wherein concurrent heating pipeline 14,16 is heat source concurrent heating pipelines that outside attracts.
Claims (2)
1. a denitrating flue gas gyration catalytic bed, structure comprises: catalytic bed, catalyst plates is arranged, it is characterized in that catalytic bed adopts the transmission guipure arranging gyration between two turning cylinders, catalyst plates arrangement is located on the transmission guipure of gyration, form gyration catalytic bed, gyration catalytic bed be laid in deduster after flue intersegmental, cigarette section is entered at flue, the outer end of smoke section and gyration catalytic bed arranges end enclosure respectively, in the inner end and end enclosure of two turning cylinders, internal partition is set respectively, flue enter cigarette section, the smoke section of flue, gyration catalytic bed circular passage is formed between two secondary end enclosure and internal partition, circular passage is divided into the SCR reaction zone that in the middle part of gyration catalytic bed, catalyst plates communicates with flue by catalyst plates, gyration catalytic bed two outer end catalyst plates and end enclosure, front closed concurrent heating district between internal partition and rear enclosed concurrent heating district, respectively with front in two secondary end enclosure, before the connection of rear concurrent heating district is correspondingly provided with, rear enclosed concurrent heating pipeline and the outlet of weary gas.
2. a kind of denitrating flue gas gyration catalytic bed according to claim 1, is characterized in that the catalyst plates that described catalyst plates is arranged 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105344244A true CN105344244A (en) | 2016-02-24 |
| CN105344244B CN105344244B (en) | 2017-08-01 |
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Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105344244B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113441002A (en) * | 2021-07-01 | 2021-09-28 | 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113441002A (en) * | 2021-07-01 | 2021-09-28 | 重庆大学 | Flue gas denitration device |
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| Publication number | Publication date |
|---|---|
| CN105344244B (en) | 2017-08-01 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Yuwei Inventor after: Zhang Jianbiao Inventor before: Zhang Yuwei |
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| CB03 | Change of inventor or designer information | ||
| 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 |