CN204710105U - A kind of full load equipment for denitrifying flue gas of Industrial Boiler - Google Patents
A kind of full load equipment for denitrifying flue gas of Industrial Boiler Download PDFInfo
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- CN204710105U CN204710105U CN201520075768.5U CN201520075768U CN204710105U CN 204710105 U CN204710105 U CN 204710105U CN 201520075768 U CN201520075768 U CN 201520075768U CN 204710105 U CN204710105 U CN 204710105U
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- flue gas
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Abstract
The utility model relates to a kind of full load equipment for denitrifying flue gas of Industrial Boiler, comprising: boiler, high-temperature heat-exchanging, cryogenic heat exchanger, catalyst, air preheater, chimney, bypass flue, bypass gas proportioning damper.A bypass flue is increased at the cryogenic heat exchanger of boiler back end ductwork, the entrance of this bypass flue takes from the high-temperature heat-exchanging outlet of boiler, outlet is connected with the exhaust pass of cryogenic heat exchanger, when boiler at low load runs, part high-temperature flue gas is directly introduced catalyst inlet to improve this place's cigarette temperature, meet the operating temperature requirements of catalyst, and bypass gas proportioning damper is installed on bypass flue, for regulating the flue gas flow of bypass flue, realize the control to catalyst inlet cigarette temperature, thus reach the requirement of Industrial Boiler full load denitration.
Description
Technical field
The utility model belongs to denitrating flue gas field, is specifically related to a kind of full load equipment for denitrifying flue gas of Industrial Boiler.
Background technology
Nitrogen oxide is as one of main atmosphere pollution, receive increasing concern, it is the key object of national Environmental capacity, in denitration of boiler smoke field, its operation principle is under 280-420 degree celsius temperature, the reducing agent ammonia sprayed in nitrogen oxide in boiler smoke and upstream flue issues raw reduction reaction in the effect of catalyst and produces nitrogen and water, realizes the removal of nitrogen oxide.But, in the boiler at low load stage, the cigarette temperature of the catalyst installed position of flue is on the low side, the operating temperature requirements of catalyst can not be met, thus cause denitration effect not good, can not accomplish qualified discharge, long-play also may cause the major safety risks such as catalyst failure, air preheater blocking.
Summary of the invention
In order to overcome above-mentioned prior art Problems existing, the utility model provides the technique that a kind of portions under heat face at Industrial Boiler flue increases bypass, in the boiler at low load operation phase, part high-temperature flue gas is directly introduced catalyst inlet to improve cigarette temperature, meet the operating temperature requirements of catalyst, it is safe, simple, practical and reliable, reaches the requirement of Industrial Boiler full load denitration.
The technical solution of the utility model is as follows:
A full load equipment for denitrifying flue gas for Industrial Boiler, comprising: the compositions such as boiler 1, high-temperature heat-exchanging 2, cryogenic heat exchanger 3, catalyst 4, air preheater 5, chimney 6, bypass flue 7, bypass gas proportioning damper 8, it is characterized in that: increase a bypass flue 7 at cryogenic heat exchanger 3 place of boiler 1 back-end ductwork, the high-temperature heat-exchanging 2 that the entrance of this bypass flue 7 takes from boiler 1 exports, outlet is connected with the exhaust pass of cryogenic heat exchanger 3, during boiler 1 underrun, part high-temperature flue gas is directly introduced catalyst 4 entrance to improve this place's cigarette temperature, meet the operating temperature requirements of catalyst 4, and on bypass flue 7, bypass gas proportioning damper 8 is installed, for regulating the flue gas flow of bypass flue 7, realize the control to catalyst 4 inlet flue gas temperature, thus reach the requirement of Industrial Boiler full load denitration.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.
The utility model is a kind of full load equipment for denitrifying flue gas of Industrial Boiler, and it comprises: boiler 1, high-temperature heat-exchanging 2, cryogenic heat exchanger 3, catalyst 4, air preheater 5, chimney 6, bypass flue 7, bypass gas proportioning damper 8.
Its technological process is as follows:
1, the high-temperature heat-exchanging 2 that the entrance increasing this bypass flue 7 of bypass flue 7 at cryogenic heat exchanger 3 place of boiler 1 back-end ductwork takes from boiler 1 exports, and outlet is connected with the exhaust pass of cryogenic heat exchanger 3;
2, during boiler 1 underrun, part high-temperature flue gas is directly introduced catalyst 4 entrance to improve this place's cigarette temperature, meet the operating temperature requirements of catalyst 4;
3, in order to regulate catalyst 4 inlet flue gas temperature, bypass flue 7 being installed bypass gas proportioning damper 8, for regulating the flue gas flow of bypass flue 7, realizing the control to catalyst 4 inlet flue gas temperature;
In sum: this utility model is safe, simple, practical and reliable, easy for installation, can reach the requirement of Industrial Boiler full load denitration, be a utility model having very much promotional value.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although by referring to preferred embodiment of the present utility model, invention has been described, but those skilled in the art is to be understood that, various change can be made to it in the form and details, and not depart from the spirit and scope of the present utility model that claims limit.
Claims (2)
1. a full load equipment for denitrifying flue gas for Industrial Boiler, comprising: boiler (1), high-temperature heat-exchanging (2), cryogenic heat exchanger (3), catalyst (4), air preheater (5), chimney (6), bypass flue (7), bypass gas proportioning damper (8) form; It is characterized in that: increase a bypass flue (7) at cryogenic heat exchanger (3) place of boiler (1) back-end ductwork, the entrance of this bypass flue (7) takes from high-temperature heat-exchanging (2) outlet of boiler (1), and bypass flue (7) outlet is connected with the exhaust pass of cryogenic heat exchanger (3).
2. the full load equipment for denitrifying flue gas of a kind of Industrial Boiler according to claim 1, it is characterized in that this bypass flue (7) is upper and bypass gas proportioning damper (8) is installed, for regulating the flue gas flow of bypass flue (7), realize the control to catalyst (4) inlet flue gas temperature, thus reach the requirement of Industrial Boiler full load denitration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520075768.5U CN204710105U (en) | 2015-02-04 | 2015-02-04 | A kind of full load equipment for denitrifying flue gas of Industrial Boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520075768.5U CN204710105U (en) | 2015-02-04 | 2015-02-04 | A kind of full load equipment for denitrifying flue gas of Industrial Boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204710105U true CN204710105U (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520075768.5U Expired - Fee Related CN204710105U (en) | 2015-02-04 | 2015-02-04 | A kind of full load equipment for denitrifying flue gas of Industrial Boiler |
Country Status (1)
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| CN (1) | CN204710105U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402746A (en) * | 2015-12-24 | 2016-03-16 | 哈尔滨锅炉厂有限责任公司 | Membrane type wall tube screen tube-bending device for forming smoke exhaust opening and smoke gas mixing method |
| CN106362590A (en) * | 2016-11-03 | 2017-02-01 | 广东电网有限责任公司电力科学研究院 | Flue gas system and method for raising fume temperature of inlet of SCR (Selective Catalytic Reduction) denitration device |
| CN106765035A (en) * | 2015-12-16 | 2017-05-31 | 华电电力科学研究院东北分院 | Improve SCR temperature of reactor system and device and method |
| CN107935084A (en) * | 2017-12-13 | 2018-04-20 | 华电电力科学研究院 | A kind of the desulfurization wastewater Zero discharging system and method for the wide load denitration of cooperative achievement |
| CN108607358A (en) * | 2018-05-08 | 2018-10-02 | 湖南大唐节能科技有限公司 | A kind of full load denitrification apparatus having urea smoke gas pyrolysis function |
| CN113713599A (en) * | 2021-09-10 | 2021-11-30 | 国能神东煤炭集团有限责任公司 | Circulating fluidized bed semi-dry method low-load desulfurization system and control method |
| CN115371074A (en) * | 2022-08-29 | 2022-11-22 | 西安热工研究院有限公司 | System for utilize fused salt heat-retaining-heat transfer to promote low-load denitration entry gas temperature |
-
2015
- 2015-02-04 CN CN201520075768.5U patent/CN204710105U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765035A (en) * | 2015-12-16 | 2017-05-31 | 华电电力科学研究院东北分院 | Improve SCR temperature of reactor system and device and method |
| CN105402746A (en) * | 2015-12-24 | 2016-03-16 | 哈尔滨锅炉厂有限责任公司 | Membrane type wall tube screen tube-bending device for forming smoke exhaust opening and smoke gas mixing method |
| CN105402746B (en) * | 2015-12-24 | 2018-04-27 | 哈尔滨锅炉厂有限责任公司 | Membrane panel smoking mouth swan neck system and mixed flue gas method |
| CN106362590A (en) * | 2016-11-03 | 2017-02-01 | 广东电网有限责任公司电力科学研究院 | Flue gas system and method for raising fume temperature of inlet of SCR (Selective Catalytic Reduction) denitration device |
| CN107935084A (en) * | 2017-12-13 | 2018-04-20 | 华电电力科学研究院 | A kind of the desulfurization wastewater Zero discharging system and method for the wide load denitration of cooperative achievement |
| CN108607358A (en) * | 2018-05-08 | 2018-10-02 | 湖南大唐节能科技有限公司 | A kind of full load denitrification apparatus having urea smoke gas pyrolysis function |
| CN113713599A (en) * | 2021-09-10 | 2021-11-30 | 国能神东煤炭集团有限责任公司 | Circulating fluidized bed semi-dry method low-load desulfurization system and control method |
| CN113713599B (en) * | 2021-09-10 | 2023-05-12 | 国能神东煤炭集团有限责任公司 | Semi-dry low-load desulfurization system of circulating fluidized bed and control method |
| CN115371074A (en) * | 2022-08-29 | 2022-11-22 | 西安热工研究院有限公司 | System for utilize fused salt heat-retaining-heat transfer to promote low-load denitration entry gas temperature |
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Legal Events
| Date | Code | Title | Description |
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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: 20151021 Termination date: 20210204 |
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| CF01 | Termination of patent right due to non-payment of annual fee |