KR101699923B1 - 디젤 엔진으로부터 배기 가스의 정화방법 - Google Patents
디젤 엔진으로부터 배기 가스의 정화방법 Download PDFInfo
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- KR101699923B1 KR101699923B1 KR1020117018700A KR20117018700A KR101699923B1 KR 101699923 B1 KR101699923 B1 KR 101699923B1 KR 1020117018700 A KR1020117018700 A KR 1020117018700A KR 20117018700 A KR20117018700 A KR 20117018700A KR 101699923 B1 KR101699923 B1 KR 101699923B1
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Abstract
Description
도 2는 본 발명의 방법의 한가지 바람직한 구체예에 따르는 배기 가스의 정화방법의 개략적 도면이다.
도 3은 본 발명의 방법의 또 다른 바람직한 구체예에 따르는 배기 가스의 정화방법의 개략적 도면이다.
도 4는 본 발명의 방법의 여전히 또 다른 바람직한 구체예에 따르는 배기 가스의 정화방법의 개략적 도면이다.
도 5는 본 발명 실시예에서, WHTC 사이클에 대한 cDPF에 대한 압력 강하의 측정을 나타내는 그래프이다.
도 6은 참고 실시예에서, WHTC 사이클에 대한 cDPF에 대한 압력 강하의 측정을 나타내는 그래프이다.
Claims (14)
- 선택적 촉매 환원을 위한 장치;
선택적 촉매 환원을 위한 장치의 하류에 설치된 촉매 층에 의해 적어도 부분적으로 덮힌 디젤 입자상 물질 필터;
선택적 촉매 환원을 위한 장치의 상류에, 또는 선택적 촉매 환원을 위한 장치와 디젤 입자상 물질 필터 사이에, 또는 선택적 촉매 환원을 위한 장치의 상류 및 선택적 촉매 환원을 위한 장치와 디젤 입자상 물질 필터 사이 모두에 설치된 촉매 산화를 위한 장치;
선택적 촉매 환원을 위한 장치의 입구에 설치된 제어된 양의 환원제의 분사를 위한 장치; 그리고
촉매 산화를 위한 장치의 입구에 설치된 제어된 양의 탄화수소의 분사 장치를 포함하는 시스템에서, 디젤 엔진으로부터 배기 가스의 정화방법에 있어서,
디젤 입자상 물질 필터가 환원제의 분사를 폐쇄시킴으로써 수동적으로 재생되고; 디젤 입자상 물질 필터는 촉매 산화를 위한 적어도 하나의 장치의 입구로 탄화수소의 분사를 개방시키고 선택적으로 환원제의 분사를 폐쇄시킴으로써 능동적으로 재생되는 것을 특징으로 하는 디젤 엔진으로부터 배기 가스의 정화방법. - 제 1 항에 있어서, 필터는 500℃ 이하의 온도에서 NO2에 의해 수동적으로 재생되는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 필터는 500℃ 내지 700℃의 온도에서 능동적으로 재생되는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 환원제는 암모니아, 암모니아의 수용액, 우레아, 우레아의 수용액, 시아누르산, 아멜라이드, 아멜린지, 암모늄 시아누레이트, 뷰렛, 암모늄 카바메이트, 탄산 암모늄, 포름산 암모늄, 멜라민 또는 트리시아노우레아인 것을 특징으로 하는 방법.
- 제 4 항에 있어서, 환원제는 암모니아, 암모니아의 수용액, 우레아, 우레아의 수용액 또는 시아누르산인 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 탄화수소는 디젤 연료인 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 선택적 촉매 환원은 바나듐계 촉매, 또는 제올라이트계 촉매, 또는 기능화된 산성 베이스 금속 혼합 산화물 촉매의 존재하에서 일어나는 것을 특징으로 하는 방법.
- 제 7 항에 있어서, 바나듐계 촉매는 텅스텐 또는 몰리브덴 산화물의 첨가가 가능한 티타늄 산화물 상의 바나듐 산화물이고, 제올라이트계 촉매는 구리 또는 철 변형된 베타 제올라이트, ZSM-5 또는 차바사이트이고, 기능화된 산성 베이스 금속 혼합 산화물 촉매는 산성 세륨-지르코늄 산화물 혼합물과 지르코늄-티타늄 산화물 혼합물을 포함하는 것을 특징으로 하는 방법.
- 제 7 항에 있어서, 바나듐계 촉매는 150℃ 내지 550℃의 온도에서 사용되고 제올라이트계 촉매는 150℃ 내지 800℃의 온도에서 사용되는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 디젤 입자상 물질 필터 상의 촉매 층은 선택적으로 귀금속들과 조합하여 베이스 금속 산화물의 혼합물을 포함하는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 제 1 산화 촉매는 선택적 촉매 환원 장치의 상류에 설치되고 제 2 산화 촉매는 선택적 촉매 환원 장치와 디젤 입자상 물질 필터 사이에 설치되고 암모니아는 제 1 산화 촉매의 입구에서 분사되는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 선택적 촉매 환원 장치의 상류에 설치된 촉매 산화를 위한 장치는 란탄 산화물 조촉매를 갖는 알루미늄 산화물 상의 백금 및 팔라듐, 또는 규소 산화물 조촉매를 갖는 티타늄 산화물 상의 백금 및 팔라듐, 또는 지르코늄 산화물 조촉매를 갖는 세륨 산화물 상의 백금 및 팔라듐을 포함하는 촉매를 포함하고; 선택적 촉매 환원 장치의 하류에 설치된 촉매 산화를 위한 장치는 란탄 산화물 조촉매를 갖는 알루미늄 산화물 상의 팔라듐, 또는 규소 산화물 조촉매를 갖는 티타늄 산화물 상의 팔라듐, 또는 지르코늄 산화물 조촉매를 갖는 세륨 산화물 상의 팔라듐, 또는 구리와 망간 산화물의 혼합물 또는 구리와 망간 산화물의 혼합물 상의 팔라듐을 포함하는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 필터를 가로지르는 압력강하를 측정하고 조장된 신호가 환원제의 첨가 및 탄화수소의 첨가를 제어하기 위해 사용되는 것을 특징으로 하는 방법.
- 제 1 항 내지 제 13 항 중 어느 한 항에 따르는 방법의 사용을 위한 시스템.
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RU2011138296A (ru) | 2013-03-27 |
KR20110116029A (ko) | 2011-10-24 |
BRPI0924120B1 (pt) | 2020-11-17 |
WO2010094313A1 (en) | 2010-08-26 |
US20110283680A1 (en) | 2011-11-24 |
JP5757574B2 (ja) | 2015-07-29 |
CA2750013C (en) | 2016-11-22 |
EP2399011B1 (en) | 2013-04-24 |
CN102325971A (zh) | 2012-01-18 |
PL2399011T3 (pl) | 2013-09-30 |
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