JP2013543947A - 3連続のSCR触媒区画を使用する排気ガスNOx処理 - Google Patents
3連続のSCR触媒区画を使用する排気ガスNOx処理 Download PDFInfo
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- JP2013543947A JP2013543947A JP2013538275A JP2013538275A JP2013543947A JP 2013543947 A JP2013543947 A JP 2013543947A JP 2013538275 A JP2013538275 A JP 2013538275A JP 2013538275 A JP2013538275 A JP 2013538275A JP 2013543947 A JP2013543947 A JP 2013543947A
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- 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
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- B01J29/42—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively containing iron group metals, noble metals or copper
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
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- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
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- 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
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- B01J29/42—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively containing iron group metals, noble metals or copper
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Abstract
Description
Claims (10)
- 炭化水素を含む還元剤を使用する選択触媒還元により、ディーゼルエンジン排気ガス中のNOx削減を改善する方法であって、HC SCRを促進する第1触媒が配置されて第1産物ガスが得られる第1区画と、第1産物ガスを通過させ、H2に促進されるHC SCRを促進する第2触媒が配置されて第2産物ガスが得られる第2区画と、第2産物ガスを通過させ、CO/H2 SCRを促進する第3触媒が配置されて最終的なNOxが除去された排気ガスが得られる第3区画を備える一連の区画に排気ガスを通過させ、COとH2を含むリフォーメートガスを排気ガス、第1産物ガス及び第2産物ガスの1または複数と混合することを含む方法。
- 第1触媒が金属/ゼオライト触媒である、請求項1に記載の方法。
- 第1触媒がCu/ZSM5触媒である、請求項2に記載の方法。
- 第2触媒がAg/Al2O3触媒である、上記の請求項のいずれか1項に記載の方法。
- 第3触媒が貴金属ベースの触媒である、上記の請求項のいずれか1項に記載の方法。
- 第3触媒がPdベースの触媒である、請求項5に記載の方法。
- リフォーメートガスをH2に促進されるSCRの最適H2:HC比を達成する量で第1産物ガスと混合してから第2区画に入れる、請求項7に記載の方法。
- リフォーメートガスを第2産物ガスと混合してから第3区画に入れることも含む、請求項8に記載の方法。
- HC SCRを促進する第1触媒、H2に促進されるHC SCR反応を促進する第2触媒及びCO/H2 SCRを促進する第3触媒を含む一連のSCR触媒を含む触媒系。
- フロースルー触媒担体上に区分された沈着物として沈着された一連の触媒を含む、請求項9に記載の触媒系。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1019045.2 | 2010-11-11 | ||
GB1019045.2A GB2485530A (en) | 2010-11-11 | 2010-11-11 | Catalyst system |
US13/112,571 | 2011-05-20 | ||
US13/112,571 US8661784B2 (en) | 2010-11-11 | 2011-05-20 | Exhaust gas aftertreatment |
PCT/GB2011/052204 WO2012063080A1 (en) | 2010-11-11 | 2011-11-11 | Exhaust gas nox treatment using three scr catalyst zones in series |
Publications (2)
Publication Number | Publication Date |
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JP2013543947A true JP2013543947A (ja) | 2013-12-09 |
JP5972274B2 JP5972274B2 (ja) | 2016-08-17 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2013538275A Expired - Fee Related JP5972274B2 (ja) | 2010-11-11 | 2011-11-11 | 3連続のSCR触媒区画を使用する排気ガスNOx処理 |
Country Status (9)
Country | Link |
---|---|
US (1) | US8661784B2 (ja) |
EP (1) | EP2637769B1 (ja) |
JP (1) | JP5972274B2 (ja) |
KR (1) | KR101866930B1 (ja) |
CN (1) | CN103391806B (ja) |
BR (1) | BR112013011720A2 (ja) |
GB (1) | GB2485530A (ja) |
RU (1) | RU2592791C2 (ja) |
WO (1) | WO2012063080A1 (ja) |
Families Citing this family (8)
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CN105555403B (zh) * | 2013-07-30 | 2019-01-22 | 庄信万丰股份有限公司 | 氨逸出催化剂 |
US10626772B2 (en) | 2014-07-18 | 2020-04-21 | Cummins Inc. | SCR exhaust aftertreatment apparatus, system and methods including multiple washcoat formulations |
US10188987B2 (en) * | 2015-03-30 | 2019-01-29 | Basf Corporation | Multifunctional filters for diesel emission control |
GB201517580D0 (en) * | 2015-10-06 | 2015-11-18 | Johnson Matthey Plc | Exhaust system comprising a passive nox adsorber |
DE102015225579A1 (de) * | 2015-12-17 | 2017-06-22 | Umicore Ag & Co. Kg | Verfahren zur Verhinderung der Kontamination eines SCR-Katalysators mit Platin |
CN105771633A (zh) * | 2016-03-31 | 2016-07-20 | 大唐环境产业集团股份有限公司 | 一种脱硝反应器装置 |
GB2593763B (en) * | 2020-04-02 | 2022-08-24 | Jaguar Land Rover Ltd | Improvements in hydrocarbon selective catalytic reduction |
KR102431102B1 (ko) * | 2021-02-03 | 2022-08-11 | 전남대학교산학협력단 | 환원제 슬립을 방지할 수 있는 질소산화물 저감용 선택적 환원촉매장치 및 이를 이용한 질소산화물 제거 방법 |
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- 2011-11-11 RU RU2013126638/05A patent/RU2592791C2/ru not_active IP Right Cessation
- 2011-11-11 CN CN201180054503.1A patent/CN103391806B/zh not_active Expired - Fee Related
- 2011-11-11 JP JP2013538275A patent/JP5972274B2/ja not_active Expired - Fee Related
- 2011-11-11 EP EP11791034.9A patent/EP2637769B1/en not_active Not-in-force
- 2011-11-11 WO PCT/GB2011/052204 patent/WO2012063080A1/en active Application Filing
- 2011-11-11 BR BR112013011720A patent/BR112013011720A2/pt not_active Application Discontinuation
- 2011-11-11 KR KR1020137014575A patent/KR101866930B1/ko active IP Right Grant
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Also Published As
Publication number | Publication date |
---|---|
JP5972274B2 (ja) | 2016-08-17 |
RU2013126638A (ru) | 2014-12-20 |
CN103391806A (zh) | 2013-11-13 |
BR112013011720A2 (pt) | 2016-08-16 |
RU2592791C2 (ru) | 2016-07-27 |
US8661784B2 (en) | 2014-03-04 |
KR20130102097A (ko) | 2013-09-16 |
US20120117948A1 (en) | 2012-05-17 |
KR101866930B1 (ko) | 2018-06-14 |
GB201019045D0 (en) | 2010-12-22 |
WO2012063080A1 (en) | 2012-05-18 |
GB2485530A (en) | 2012-05-23 |
EP2637769A1 (en) | 2013-09-18 |
CN103391806B (zh) | 2015-07-01 |
EP2637769B1 (en) | 2015-01-07 |
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