KR101909303B1 - 산화 촉매를 포함하는 희박 연소 내연기관의 배기가스 처리 장치 및 산화 촉매의 산화 활성 회복 방법 - Google Patents
산화 촉매를 포함하는 희박 연소 내연기관의 배기가스 처리 장치 및 산화 촉매의 산화 활성 회복 방법 Download PDFInfo
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Abstract
Description
도 2는 활성화 전 및 후, 동일한 주기에 대해 실행된 도 1의 종래의 DOC를 시험하는데 사용된 엔진에 장착된 본 발명에 따르는 DOC에 대한 엔진-꺼짐 및 촉매-후, 누적된 CO를 나타내는 그래프이다.
도 3은 "주기-내" 활성화의 효과를 포함하고, 도 1 및 2에서 사용된 것과 다른 2.0 리터 디젤 엔진 상에서 엔진-꺼짐(상부 자취) 및 촉매-후(저부 자취)에서 검출된 누적되는 CO를 나타내는 일련의 그래프를 나타낸다.
종래의 DOC | 활성 DOC | |||
활성화 | 전 | 후 | 전 | 후 |
CO g/km | 0.50 | 0.50 | 0.63 | 0.13 |
활성화 상세내용 | 4 ×(30초 희박/10초 풍부) |
Claims (15)
- 희박-연소 내연기관, 엔진 관리 수단 및 엔진의 배기가스를 처리하기 위한 배기 시스템을 포함하는 장치로서, 배기 시스템은 제 1벌집모양 모노리스 기판상에 배치된 제 1산화 촉매를 포함하고, 제 1산화 촉매는 적어도 하나의 환원가능 산화물을 포함하는 제 1금속 산화물 지지체 상에 지지된 백금을 포함하고, 제 1산화 촉매는 알칼리 금속 및 알칼리 토금속이 없으며, 엔진 관리 수단의 전자 처리기는 사용될 때 간헐적으로 제 1산화 촉매를 접촉하는 배기가스의 람다 조성을 0.8 < 1 람다의 풍부 람다 조성으로 조절하여 제1 산화 촉매의 산화 촉매 활성을 재생하도록 프로그램되는 것을 특징으로 하는 장치.
- 제 1항에 있어서, 적어도 하나의 환원가능 산화물은 망간, 철, 주석, 구리, 코발트 또는 세륨으로 구성된 군으로부터 선택된 하나 이상의 금속을 포함하는 산화물, 복합 산화물 및 혼합된 산화물 및 선택적으로 그것들의 안정화된 동족체로 구성된 군으로부터 선택되는 것을 특징으로 하는 장치.
- 제 2항에 있어서, 적어도 하나의 환원가능 산화물은 MnO2, Mn2O3, Fe2O3, SnO2, CuO, CoO 및 CeO2를 포함하는 것을 특징으로 하는 장치.
- 제 2항 또는 제 3항에 있어서, CeO2의 안정화된 동족체는 지르코니아, 적어도 하나의 비-세륨 희토류 산화물 또는 지르코니아와 적어도 하나의 비-세륨 희토류 산화물을 둘 다 포함하는 것을 특징으로 하는 장치.
- 제 2항 또는 제 3항에 있어서, 제 1금속 산화물 지지체는 필수적으로 벌크 적어도 하나의 환원가능 산화물 또는 선택적으로 그것들의 안정화된 동족체로 구성되는 것을 특징으로 하는 장치.
- 제 2항 또는 제 3항에 있어서, 적어도 하나의 환원가능 산화물 또는 선택적으로 그것의 안정화된 동족체는 백금을 갖는 제 1금속 산화물 지지체 상에 지지되는 것을 특징으로 하는 장치.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서, 제 1산화 촉매의 백금족 금속 함량은 모노리스 기판상에 >10 g/ft3의 로딩으로 배치되는 것을 특징으로 하는 장치.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서, 제 1산화 촉매는 제 1금속 산화물 지지체 상에 지지된 팔라듐을 백금과 조합하여 포함하는 것을 특징으로 하는 장치.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서, 제 1산화 촉매는 적어도 하나의 분자체를 포함하는 것을 특징으로 하는 장치.
- 제 9항에 있어서, 적어도 하나의 분자체는 구리, 철, 또는 구리와 철; 및 적어도 하나의 귀금속을 포함하는 것을 특징으로 하는 장치.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서, 제 1산화 촉매는 제 1산화 촉매와 다른 제 2산화 촉매와 조합되는데, 제 2산화 촉매는 제 2금속 산화물 지지체 상에 지지된 적어도 하나의 귀금속을 포함하는 것을 특징으로 하는 장치.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서, 제 1벌집모양 모노리스 기판 및, 존재하는 경우, 제 2벌집모양 모노리스 기판은 미립자 물질을 배기가스로부터 여과하기 위해 선택적으로 촉매작용된 필터의 상류에 배치되는 것을 특징으로 하는 장치.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서, 제 1벌집모양 모노리스 기판은 질소 환원제를 사용하여 질소의 산화물을 선택적으로 환원시키기 위한 촉매를 포함하는 모노리스 기판의 상류에 배치되는 것을 특징으로 하는 장치.
- 제 13항에 있어서, 모노리스 기판은 흐름-통과 모노리스 기판인 것을 특징으로 하는 장치.
- 희박-연소 내연기관의 배기가스에서 노화된 제 1산화 촉매의 산화 활성을 회복하는 방법으로서, 제 1산화 촉매는 제 1금속 산화물 지지체 상에 지지되고 벌집모양 모노리스 기판상에 배치된 백금을 포함하고, 방법은 간헐적으로 제 1산화 촉매를 0.8 < 1 람다의 풍부 람다 조성으로 조절된 배기가스와 접촉하는 단계를 포함하며, 제 1금속 산화물 지지체는 적어도 하나의 환원가능 산화물을 포함하고 제 1산화 촉매는 알칼리 금속 및 알칼리 토금속이 없는 것을 특징으로 하는 방법.
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GB201021887A GB201021887D0 (en) | 2010-12-21 | 2010-12-23 | Oxidation catalyst for a lean burn internal combustion engine |
PCT/GB2011/052547 WO2012085572A2 (en) | 2010-12-21 | 2011-12-21 | Oxidation catalyst for a lean burn internal combustion engine |
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- 2011-12-21 WO PCT/GB2011/052547 patent/WO2012085572A2/en active Application Filing
- 2011-12-21 CN CN201180058350.8A patent/CN103269775B/zh active Active
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2015
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KR20210014509A (ko) | 2019-07-30 | 2021-02-09 | 한국조선해양 주식회사 | 저온 메탄 산화 반응용 촉매 |
KR20210014510A (ko) | 2019-07-30 | 2021-02-09 | 한국조선해양 주식회사 | 메탄 산화 촉매 재생 시스템 및 이를 포함하는 메탄 산화 반응 장치 |
KR20230044860A (ko) | 2021-09-27 | 2023-04-04 | 현대중공업 주식회사 | 메탄산화촉매 재생장치 및 재생방법 |
KR20230044863A (ko) | 2021-09-27 | 2023-04-04 | 현대중공업 주식회사 | 메탄산화촉매 재생장치 및 재생방법 |
KR20230063024A (ko) | 2021-11-01 | 2023-05-09 | 에이치디현대중공업 주식회사 | 교번식 메탄산화촉매 재생장치 및 재생방법 |
KR20230064229A (ko) | 2021-11-03 | 2023-05-10 | 에이치디현대중공업 주식회사 | 메탄산화촉매 재생장치 및 재생방법 |
WO2023146260A1 (ko) | 2022-01-28 | 2023-08-03 | 한국화학연구원 | 메탄 산화반응용 촉매, 이의 제조방법 및 이를 이용한 메탄 산화방법 |
KR20230116335A (ko) | 2022-01-28 | 2023-08-04 | 한국화학연구원 | 메탄 산화반응용 촉매 및 이를 이용한 메탄 산화방법 |
KR20230121281A (ko) | 2022-02-11 | 2023-08-18 | 한국화학연구원 | 메탄 산화반응용 촉매 및 이의 제조방법 |
Also Published As
Publication number | Publication date |
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RU2577856C2 (ru) | 2016-03-20 |
KR20130132862A (ko) | 2013-12-05 |
GB201121961D0 (en) | 2012-02-01 |
WO2012085572A3 (en) | 2012-09-07 |
JP6463887B2 (ja) | 2019-02-06 |
BR112013014585A2 (pt) | 2019-02-19 |
US9140167B2 (en) | 2015-09-22 |
EP2654929B1 (en) | 2020-02-12 |
CN103269775A (zh) | 2013-08-28 |
GB2486810A (en) | 2012-06-27 |
CN103269775B (zh) | 2016-03-02 |
JP2014510220A (ja) | 2014-04-24 |
US20150375221A1 (en) | 2015-12-31 |
DE102011089371A1 (de) | 2012-06-21 |
WO2012085572A2 (en) | 2012-06-28 |
EP2654929A2 (en) | 2013-10-30 |
EP3673978B1 (en) | 2025-01-29 |
GB2486810B (en) | 2013-09-11 |
JP2020076408A (ja) | 2020-05-21 |
JP2017214928A (ja) | 2017-12-07 |
RU2013133964A (ru) | 2015-01-27 |
GB201021887D0 (en) | 2011-02-02 |
DE102011089371B4 (de) | 2013-07-18 |
EP3673978A1 (en) | 2020-07-01 |
US20130340414A1 (en) | 2013-12-26 |
JP6670273B2 (ja) | 2020-03-18 |
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