KR960013449A - 질소산화물 접촉환원용 촉매 및 방법 - Google Patents

질소산화물 접촉환원용 촉매 및 방법 Download PDF

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KR960013449A
KR960013449A KR1019940016786A KR19940016786A KR960013449A KR 960013449 A KR960013449 A KR 960013449A KR 1019940016786 A KR1019940016786 A KR 1019940016786A KR 19940016786 A KR19940016786 A KR 19940016786A KR 960013449 A KR960013449 A KR 960013449A
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South Korea
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oxide
weight
nitrogen oxide
catalytic reduction
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KR1019940016786A
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English (en)
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히로아끼 리끼마루
도시가쓰 우마바
요시유끼 요시까와
Original Assignee
시노쓰까 기요시
사까이 가가꾸 고오교 가부시끼가이샤
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Publication of KR960013449A publication Critical patent/KR960013449A/ko

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/44—Palladium
    • 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
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/20—Vanadium, niobium or tantalum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/202—Hydrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/204—Carbon monoxide
    • 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
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/208—Hydrocarbons
    • 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
    • B01D2255/20723—Vanadium
    • 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
    • B01D2255/20769—Molybdenum
    • 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
    • B01D2255/20776—Tungsten

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

1. 청구범위에 기재된 발명이 속한 기술분야.
각종의 연소배기가스나 화학공저으로부터 발생하는 배기가스중에 포함되는 유해한 질소산화물의 환원제거.
2. 발명이 해결하려고 하는 기술적 과제.
저온영역에서 유효한 질소산화물 환원활성을 갖는 것으로서 저온영역으로부터 500℃를 초과하는 고온영역에 걸친 넓은 온도영역에서 안정되고 고활설을 갖으며 내구성이 우수한 질소산화물접촉환원용촉매의 개발.
3. 발명의 해결방법의 요지.
티탄, 텅스텐 또는 몰리브덴을 산화물환산으로 10-20중량% 및 니오브를 0.1-2중량%를 주성분으로 하는 질소산화물접촉환원용촉매와 이 촉매에 500℃ 이상의 온도로 접촉시킨다.
4. 발명의 중요한 용도.
발전소 보일러, 가열로 가스터어빈, 디이젤엔진, 쓰레기소각로로부터 발생하는 배기가스의 처기.
※선택도 없음

Description

질소산화물 접촉환원용 촉매 및 방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (2)

  1. ⒜ 티탄 ⒝ 텅스텐 또는 몰리브덴을 산화물환산으로 10∼25중량% 및 ⒞ 니오브를 산화물 환산으로 0.1∼2중량%를 주성분으로 하는 것을 특징으로 하는 질소산화물접촉환원용액.
  2. 환원성가스의 존재하에 질소산화물을 함유하는 배기가스를 ⒜ 티탄 ⒝ 텅스텐 또는 몰리브덴을 산화물 환산으로 10∼25중량% 및 ⒞ 니오브를 산화물 환산으로 0.1∼2중량%를 주성분으로 하는 질소산화물접촉환원용촉매에 500℃ 이상의 온도로 접촉시키는 것을 특징으로 하는 배기가스로부터 질소산화물을 접촉환원 제거시키는 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940016786A 1993-07-20 1994-07-13 질소산화물 접촉환원용 촉매 및 방법 KR960013449A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP93-179467 1993-07-20
JP5179467A JPH0768172A (ja) 1993-07-20 1993-07-20 窒素酸化物接触還元用触媒及び方法

Publications (1)

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KR960013449A true KR960013449A (ko) 1996-05-22

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KR1019940016786A KR960013449A (ko) 1993-07-20 1994-07-13 질소산화물 접촉환원용 촉매 및 방법

Country Status (7)

Country Link
US (1) US5582809A (ko)
EP (1) EP0635298B1 (ko)
JP (1) JPH0768172A (ko)
KR (1) KR960013449A (ko)
AT (1) ATE171644T1 (ko)
DE (1) DE69413615T2 (ko)
DK (1) DK0635298T3 (ko)

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Also Published As

Publication number Publication date
DE69413615D1 (de) 1998-11-05
DE69413615T2 (de) 1999-04-08
DK0635298T3 (da) 1999-06-21
EP0635298B1 (en) 1998-09-30
ATE171644T1 (de) 1998-10-15
US5582809A (en) 1996-12-10
JPH0768172A (ja) 1995-03-14
EP0635298A3 (en) 1995-02-01
EP0635298A2 (en) 1995-01-25

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