WO2009139609A3 - 희박연소 조건에 있는 자동차나 소각로 배기 가스로부터 낙스를 제거하기 위한 촉매 - Google Patents

희박연소 조건에 있는 자동차나 소각로 배기 가스로부터 낙스를 제거하기 위한 촉매 Download PDF

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Publication number
WO2009139609A3
WO2009139609A3 PCT/KR2009/002602 KR2009002602W WO2009139609A3 WO 2009139609 A3 WO2009139609 A3 WO 2009139609A3 KR 2009002602 W KR2009002602 W KR 2009002602W WO 2009139609 A3 WO2009139609 A3 WO 2009139609A3
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WO
WIPO (PCT)
Prior art keywords
catalyst
nox
conditions
lean
present
Prior art date
Application number
PCT/KR2009/002602
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English (en)
French (fr)
Other versions
WO2009139609A2 (ko
Inventor
정종식
박소예
왕창
손지향
Original Assignee
포항공과대학교 산학협력단
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to US12/993,035 priority Critical patent/US20110195007A1/en
Application filed by 포항공과대학교 산학협력단 filed Critical 포항공과대학교 산학협력단
Priority to EP09746788A priority patent/EP2286896A4/en
Publication of WO2009139609A2 publication Critical patent/WO2009139609A2/ko
Publication of WO2009139609A3 publication Critical patent/WO2009139609A3/ko

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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
    • B01D53/46—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
    • B01D53/92—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
    • B01D53/9422—Processes characterised by a specific catalyst for removing nitrogen oxides by NOx storage or reduction by cyclic switching between lean and rich exhaust gases (LNT, NSC, NSR)
    • 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
    • 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
    • B01D53/88—Handling or mounting catalysts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/202—Alkali metals
    • B01D2255/2022—Potassium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20707—Titanium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20746—Cobalt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/91—NOx-storage component incorporated in the catalyst
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/01—Engine exhaust gases
    • B01D2258/012—Diesel engines and lean burn gasoline engines

Abstract

본 발명은 배기가스 중의 NOx 제거용 촉매에 관한 것으로, 보다 상세하게는 금속티타네이트를 담지체로 이용한 NOx 제거용 촉매에 관한 것이다. 본 발명에 따른 NOx 제거용 촉매는 금속티타네이트가 담지체 (support)로서 작용할 뿐만 아니라 연료희박 조건에서 NOx의 흡착 및 저장제 (이하 흡장제로 표기)로 작용하며, 담지 된 귀금속이나 전이금속 성분은 연료희박조건에서는 NOx를 NO2로 산화시켜 흡장을 돕고 연료 농후조건에서는 흡장된 NO2의 N2로의 환원반응에 참여하는 촉매 기능을 제공한다. 본 발명에 따른 촉매는 NOx 흡장량이 기존에 제시된 촉매들, 예로 Ba, 보다 2배 이상 많을 뿐만 아니라 150 ~ 700℃의 보다 넓은 범위의 운전 조건에서도 효율적인 제거가 가능하다. 더구나 배기가스 내 SOx 가 존재하는 조건하에서도 안정적인 NOx 제거 능력을 보여 지금까지 불가능했던 실용화가 가능하다.
PCT/KR2009/002602 2008-05-16 2009-05-16 희박연소 조건에 있는 자동차나 소각로 배기 가스로부터 낙스를 제거하기 위한 촉매 WO2009139609A2 (ko)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/993,035 US20110195007A1 (en) 2008-05-16 2008-05-16 CATALYST FOR REMOVING NOx FROM EXHAUST GAS OF LEAN-BURNING AUTOMOBILES OR INCINERATORS
EP09746788A EP2286896A4 (en) 2008-05-16 2009-05-16 CATALYST FOR REMOVING NOx FROM AUTOMOTIVE EXHAUST GASES OPERATING IN POOR MIXING OR INCINERATOR CONDITIONS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080045760A KR101098247B1 (ko) 2008-05-16 2008-05-16 희박연소 조건에 있는 자동차나 소각로 배기 가스로부터낙스를 제거하기 위한 촉매
KR10-2008-0045760 2008-05-16

Publications (2)

Publication Number Publication Date
WO2009139609A2 WO2009139609A2 (ko) 2009-11-19
WO2009139609A3 true WO2009139609A3 (ko) 2010-03-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/002602 WO2009139609A2 (ko) 2008-05-16 2009-05-16 희박연소 조건에 있는 자동차나 소각로 배기 가스로부터 낙스를 제거하기 위한 촉매

Country Status (4)

Country Link
US (1) US20110195007A1 (ko)
EP (1) EP2286896A4 (ko)
KR (1) KR101098247B1 (ko)
WO (1) WO2009139609A2 (ko)

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CN102240557B (zh) * 2011-05-12 2013-06-19 南京工业大学 一种处理工业废气的含镍铁锰复合氧化物催化剂及其制备方法
CN102513123B (zh) * 2011-11-17 2013-09-11 南京工业大学 一种处理工业废气的稀土钙钛矿型催化剂及其制备方法、应用
KR101361458B1 (ko) * 2011-11-29 2014-02-12 현대자동차주식회사 수동적 암모니아/ｓｃｒ용 암모니아 생성 삼원 촉매의 제조 방법 및 이에 의해 제조된 삼원 촉매
KR101438885B1 (ko) * 2012-05-09 2014-09-05 현대자동차주식회사 질소산화물의 암모니아 전환용 촉매 및 이의 제조방법
US8815197B2 (en) 2012-10-05 2014-08-26 Peerless Mfg. Co. Method for urea decomposition and ammonia feed to a selective catalytic reduction system
WO2014055858A1 (en) * 2012-10-05 2014-04-10 Combustion Components Associates, Inc. Selective catalytic reduction system
KR101593332B1 (ko) 2014-11-07 2016-02-11 김종혁 소각로용 정화촉매
CN110252313A (zh) * 2019-06-20 2019-09-20 武汉科林精细化工有限公司 一种宽温干法烟气脱硝剂及其制备方法
CN110833832B (zh) * 2019-11-07 2022-07-26 上海纳米技术及应用国家工程研究中心有限公司 铬铁基一氧化氮常温常压高效治理催化剂的制备方法及其产品和应用
KR102250799B1 (ko) * 2021-01-22 2021-05-12 주식회사 쿠킴 미세먼지 방지 항균필터, 이를 포함하는 마스크와 그 제조방법

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Also Published As

Publication number Publication date
WO2009139609A2 (ko) 2009-11-19
KR20090119610A (ko) 2009-11-19
EP2286896A4 (en) 2012-06-27
KR101098247B1 (ko) 2011-12-23
US20110195007A1 (en) 2011-08-11
EP2286896A2 (en) 2011-02-23

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