CN114466690A - 选择性催化还原方法及选择性催化还原系统 - Google Patents
选择性催化还原方法及选择性催化还原系统 Download PDFInfo
- Publication number
- CN114466690A CN114466690A CN202080068794.9A CN202080068794A CN114466690A CN 114466690 A CN114466690 A CN 114466690A CN 202080068794 A CN202080068794 A CN 202080068794A CN 114466690 A CN114466690 A CN 114466690A
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- China
- Prior art keywords
- supply source
- nitric acid
- selective catalytic
- catalytic reduction
- ammonia
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 81
- 238000010531 catalytic reduction reaction Methods 0.000 title claims abstract description 64
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 135
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 126
- 239000007789 gas Substances 0.000 claims abstract description 85
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 75
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 75
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 60
- 230000008569 process Effects 0.000 claims abstract description 35
- 238000011065 in-situ storage Methods 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims description 44
- 239000007924 injection Substances 0.000 claims description 44
- 239000003054 catalyst Substances 0.000 claims description 39
- 238000006243 chemical reaction Methods 0.000 claims description 36
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical group OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 27
- 239000000654 additive Substances 0.000 claims description 16
- 230000000996 additive effect Effects 0.000 claims description 15
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical group N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 10
- 229910002651 NO3 Inorganic materials 0.000 claims description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 8
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 7
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 7
- 231100000572 poisoning Toxicity 0.000 claims description 7
- 230000000607 poisoning effect Effects 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- 239000011593 sulfur Substances 0.000 claims description 7
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 claims description 6
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical group O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 claims description 6
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 3
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 3
- 229910000069 nitrogen hydride Inorganic materials 0.000 claims description 3
- 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 claims description 2
- 229910002089 NOx Inorganic materials 0.000 claims description 2
- 238000000354 decomposition reaction Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims 1
- 239000003638 chemical reducing agent Substances 0.000 abstract description 14
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- 238000002474 experimental method Methods 0.000 description 18
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 14
- 230000009849 deactivation Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 230000002779 inactivation Effects 0.000 description 8
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 7
- 239000004408 titanium dioxide Substances 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000006722 reduction reaction Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 239000012744 reinforcing agent Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000004128 high performance liquid chromatography Methods 0.000 description 2
- 238000004811 liquid chromatography Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- GNTDGMZSJNCJKK-UHFFFAOYSA-N vanadium(V) oxide Substances O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 1
Images
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
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
- B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
-
- 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
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
- Catalysts (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2019-0127932 | 2019-10-15 | ||
| KR1020190127932A KR102231930B1 (ko) | 2019-10-15 | 2019-10-15 | 선택적 촉매 환원 방법 및 선택적 촉매 환원 시스템 |
| PCT/KR2020/011796 WO2021075714A1 (ko) | 2019-10-15 | 2020-09-02 | 선택적 촉매 환원 방법 및 선택적 촉매 환원 시스템 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114466690A true CN114466690A (zh) | 2022-05-10 |
Family
ID=75222579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080068794.9A Pending CN114466690A (zh) | 2019-10-15 | 2020-09-02 | 选择性催化还原方法及选择性催化还原系统 |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR102231930B1 (ko) |
| CN (1) | CN114466690A (ko) |
| WO (1) | WO2021075714A1 (ko) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230885A (zh) * | 2021-04-30 | 2021-08-10 | 中国神华煤制油化工有限公司 | Scr脱硝系统 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09290136A (ja) * | 1996-04-30 | 1997-11-11 | Babcock Hitachi Kk | 排ガスの浄化方法及び浄化装置 |
| CN101623591A (zh) * | 2009-08-10 | 2010-01-13 | 杭州蓝海环保工程有限公司 | 一种单级氨还原吸收法脱硫脱氮氧化工艺 |
| CN106705091A (zh) * | 2016-12-21 | 2017-05-24 | 西安交通大学 | 一种减缓scr催化剂失活和空气预热器堵塞的系统和方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100356367B1 (ko) * | 1999-09-07 | 2002-10-19 | 코오롱건설주식회사 | 산성 기체에 내구성이 강한 질소산화물 제거용 촉매 |
| JP4864231B2 (ja) * | 2001-06-06 | 2012-02-01 | バブコック日立株式会社 | 脱硝用触媒構造体およびこれを用いた排ガス脱硝方法 |
| KR101400608B1 (ko) | 2012-03-12 | 2014-05-27 | 박광희 | 암모니아를 질소로 전환하는 선택적 산화 촉매와 그 제조방법 및 이를 이용하여 암모니아를 선택적으로 산화시키는 방법 |
| KR102178597B1 (ko) * | 2015-12-21 | 2020-11-13 | 현대중공업 주식회사 | 선박용 탈질 시스템에서의 촉매 관리 장치 및 방법 |
| JP6268685B1 (ja) * | 2016-10-19 | 2018-01-31 | マツダ株式会社 | エンジンの排気浄化制御装置 |
-
2019
- 2019-10-15 KR KR1020190127932A patent/KR102231930B1/ko active IP Right Grant
-
2020
- 2020-09-02 WO PCT/KR2020/011796 patent/WO2021075714A1/ko active Application Filing
- 2020-09-02 CN CN202080068794.9A patent/CN114466690A/zh active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09290136A (ja) * | 1996-04-30 | 1997-11-11 | Babcock Hitachi Kk | 排ガスの浄化方法及び浄化装置 |
| CN101623591A (zh) * | 2009-08-10 | 2010-01-13 | 杭州蓝海环保工程有限公司 | 一种单级氨还原吸收法脱硫脱氮氧化工艺 |
| CN106705091A (zh) * | 2016-12-21 | 2017-05-24 | 西安交通大学 | 一种减缓scr催化剂失活和空气预热器堵塞的系统和方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021075714A1 (ko) | 2021-04-22 |
| KR102231930B1 (ko) | 2021-03-25 |
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