CN108744914A - 一种烧结烟尘在线自催化脱硝方法 - Google Patents
一种烧结烟尘在线自催化脱硝方法 Download PDFInfo
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- CN108744914A CN108744914A CN201810603401.4A CN201810603401A CN108744914A CN 108744914 A CN108744914 A CN 108744914A CN 201810603401 A CN201810603401 A CN 201810603401A CN 108744914 A CN108744914 A CN 108744914A
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- China
- Prior art keywords
- ammonia
- denitration
- dust
- flue
- flue dust
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- 239000003500 flue dust Substances 0.000 title claims abstract description 166
- 238000006555 catalytic reaction Methods 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000005245 sintering Methods 0.000 title claims abstract description 27
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 260
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 127
- 239000000428 dust Substances 0.000 claims abstract description 100
- 239000003054 catalyst Substances 0.000 claims abstract description 39
- 238000003860 storage Methods 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 238000010790 dilution Methods 0.000 claims abstract description 7
- 239000012895 dilution Substances 0.000 claims abstract description 7
- 239000004744 fabric Substances 0.000 claims description 48
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 10
- 239000000779 smoke Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 7
- 235000019504 cigarettes Nutrition 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000013589 supplement Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003546 flue gas Substances 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000011257 shell material Substances 0.000 description 60
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 20
- 230000000694 effects Effects 0.000 description 17
- 230000003197 catalytic effect Effects 0.000 description 16
- 230000005484 gravity Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 5
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000003915 air pollution Methods 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 230000002045 lasting effect Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 3
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- ZWWCURLKEXEFQT-UHFFFAOYSA-N dinitrogen pentaoxide Chemical compound [O-][N+](=O)O[N+]([O-])=O ZWWCURLKEXEFQT-UHFFFAOYSA-N 0.000 description 2
- WFPZPJSADLPSON-UHFFFAOYSA-N dinitrogen tetraoxide Chemical compound [O-][N+](=O)[N+]([O-])=O WFPZPJSADLPSON-UHFFFAOYSA-N 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Inorganic materials O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- LZDSILRDTDCIQT-UHFFFAOYSA-N dinitrogen trioxide Chemical compound [O-][N+](=O)N=O LZDSILRDTDCIQT-UHFFFAOYSA-N 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003721 gunpowder Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Dispersion Chemistry (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810603401.4A CN108744914B (zh) | 2018-06-12 | 2018-06-12 | 一种烧结烟尘在线自催化脱硝方法 |
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CN201810603401.4A CN108744914B (zh) | 2018-06-12 | 2018-06-12 | 一种烧结烟尘在线自催化脱硝方法 |
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CN108744914A true CN108744914A (zh) | 2018-11-06 |
CN108744914B CN108744914B (zh) | 2021-07-02 |
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CN201810603401.4A Active CN108744914B (zh) | 2018-06-12 | 2018-06-12 | 一种烧结烟尘在线自催化脱硝方法 |
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Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10049595A1 (de) * | 1999-10-13 | 2001-05-23 | Sekretaer Der Agentur Der Ind | Abgasreinigungsanlage sowie Verfahren zum Reinigen von Abgasen |
JP3686666B1 (ja) * | 2004-08-31 | 2005-08-24 | 日産ディーゼル工業株式会社 | エンジンの排気浄化装置 |
CN102091658A (zh) * | 2010-12-27 | 2011-06-15 | 北京工业大学 | 一种防粉尘粘附的包裹脱硝催化球及其制备方法 |
CN102614779A (zh) * | 2012-04-28 | 2012-08-01 | 湖南大学 | 一种除尘脱硝一体化装置 |
CN104689735A (zh) * | 2015-03-19 | 2015-06-10 | 西安西热锅炉环保工程有限公司 | 一种适用于烟道式脱硝反应器的一体式氨注射混合器 |
CN105289303A (zh) * | 2015-11-11 | 2016-02-03 | 华南理工大学 | 一种旋流雾化scr脱硝方法及其装置 |
CN105289301A (zh) * | 2015-11-11 | 2016-02-03 | 华南理工大学 | 一种双旋式scr脱硝方法及其装置 |
CN106268294A (zh) * | 2016-08-03 | 2017-01-04 | 西安交通大学 | 一种用于scr脱硝系统的纵向涡型喷氨混合装置 |
CN206276239U (zh) * | 2016-12-05 | 2017-06-27 | 唐山学院 | 一种除尘式脱硝催化剂结构体 |
CN206334542U (zh) * | 2016-12-29 | 2017-07-18 | 大唐保定供热有限责任公司 | 一种自除尘往复式脱硝催化装置 |
CN106975331A (zh) * | 2017-04-27 | 2017-07-25 | 北京清新环境技术股份有限公司 | 一种烟气催化吸附协同脱汞装置及其方法 |
CN206355833U (zh) * | 2016-12-29 | 2017-07-28 | 大唐保定供热有限责任公司 | 一种循环型脱硝催化装置 |
CN107081055A (zh) * | 2017-04-17 | 2017-08-22 | 山东大学 | 一种旋流组合式scr静态混合器 |
CN107321173A (zh) * | 2017-05-26 | 2017-11-07 | 国家海洋局第二海洋研究所 | 空气净化装置及净化球的制备工艺 |
CN107559858A (zh) * | 2017-09-12 | 2018-01-09 | 哈尔滨工业大学 | 带有内直外旋喷氨装置的旋流燃烧器w火焰锅炉 |
CN108014480A (zh) * | 2017-11-30 | 2018-05-11 | 宁波市江北义盈工贸有限公司 | 一种防卡球的自动发球装置 |
CN108105824A (zh) * | 2018-01-16 | 2018-06-01 | 青岛海尔智慧厨房电器有限公司 | 一种油烟机汲烟器及油烟机 |
-
2018
- 2018-06-12 CN CN201810603401.4A patent/CN108744914B/zh active Active
Patent Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10049595A1 (de) * | 1999-10-13 | 2001-05-23 | Sekretaer Der Agentur Der Ind | Abgasreinigungsanlage sowie Verfahren zum Reinigen von Abgasen |
JP3686666B1 (ja) * | 2004-08-31 | 2005-08-24 | 日産ディーゼル工業株式会社 | エンジンの排気浄化装置 |
CN102091658A (zh) * | 2010-12-27 | 2011-06-15 | 北京工业大学 | 一种防粉尘粘附的包裹脱硝催化球及其制备方法 |
CN102614779A (zh) * | 2012-04-28 | 2012-08-01 | 湖南大学 | 一种除尘脱硝一体化装置 |
CN104689735A (zh) * | 2015-03-19 | 2015-06-10 | 西安西热锅炉环保工程有限公司 | 一种适用于烟道式脱硝反应器的一体式氨注射混合器 |
CN105289303A (zh) * | 2015-11-11 | 2016-02-03 | 华南理工大学 | 一种旋流雾化scr脱硝方法及其装置 |
CN105289301A (zh) * | 2015-11-11 | 2016-02-03 | 华南理工大学 | 一种双旋式scr脱硝方法及其装置 |
CN106268294A (zh) * | 2016-08-03 | 2017-01-04 | 西安交通大学 | 一种用于scr脱硝系统的纵向涡型喷氨混合装置 |
CN206276239U (zh) * | 2016-12-05 | 2017-06-27 | 唐山学院 | 一种除尘式脱硝催化剂结构体 |
CN206334542U (zh) * | 2016-12-29 | 2017-07-18 | 大唐保定供热有限责任公司 | 一种自除尘往复式脱硝催化装置 |
CN206355833U (zh) * | 2016-12-29 | 2017-07-28 | 大唐保定供热有限责任公司 | 一种循环型脱硝催化装置 |
CN107081055A (zh) * | 2017-04-17 | 2017-08-22 | 山东大学 | 一种旋流组合式scr静态混合器 |
CN106975331A (zh) * | 2017-04-27 | 2017-07-25 | 北京清新环境技术股份有限公司 | 一种烟气催化吸附协同脱汞装置及其方法 |
CN107321173A (zh) * | 2017-05-26 | 2017-11-07 | 国家海洋局第二海洋研究所 | 空气净化装置及净化球的制备工艺 |
CN107559858A (zh) * | 2017-09-12 | 2018-01-09 | 哈尔滨工业大学 | 带有内直外旋喷氨装置的旋流燃烧器w火焰锅炉 |
CN108014480A (zh) * | 2017-11-30 | 2018-05-11 | 宁波市江北义盈工贸有限公司 | 一种防卡球的自动发球装置 |
CN108105824A (zh) * | 2018-01-16 | 2018-06-01 | 青岛海尔智慧厨房电器有限公司 | 一种油烟机汲烟器及油烟机 |
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CN108744914B (zh) | 2021-07-02 |
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