ITRM910751A1 - ARRANGEMENT OF CATALYSTS FOR THE REDUCTION OF NITROGEN OXIDES. - Google Patents

ARRANGEMENT OF CATALYSTS FOR THE REDUCTION OF NITROGEN OXIDES.

Info

Publication number
ITRM910751A1
ITRM910751A1 IT000751A ITRM910751A ITRM910751A1 IT RM910751 A1 ITRM910751 A1 IT RM910751A1 IT 000751 A IT000751 A IT 000751A IT RM910751 A ITRM910751 A IT RM910751A IT RM910751 A1 ITRM910751 A1 IT RM910751A1
Authority
IT
Italy
Prior art keywords
catalysts
reduction
arrangement
nitrogen oxides
oxides
Prior art date
Application number
IT000751A
Other languages
Italian (it)
Inventor
Daniel Grimm
Hartmut Kainer
Wilfried Schnelle
Wilfried Schutz
Original Assignee
Didier Werke Ag
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
Application filed by Didier Werke Ag filed Critical Didier Werke Ag
Publication of ITRM910751A0 publication Critical patent/ITRM910751A0/en
Publication of ITRM910751A1 publication Critical patent/ITRM910751A1/en
Application granted granted Critical
Publication of IT1249451B publication Critical patent/IT1249451B/en

Links

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
    • B01D53/92—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
    • B01D53/9431—Processes characterised by a specific device
    • 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
    • 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
    • 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
    • B01D2255/20738—Iron
    • 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
    • B01D2255/20784—Chromium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/50—Zeolites
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Exhaust Gas After Treatment (AREA)
ITRM910751A 1990-10-10 1991-10-07 ARRANGEMENT OF CATALYSTS FOR THE REDUCTION OF NITROGEN OXIDES. IT1249451B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4032085A DE4032085A1 (en) 1990-10-10 1990-10-10 Catalytic appts. for reducing nitrogen oxide(s) in I.C. engine exhaust - has catalyst bed of different materials active in different temp. ranges of exhaust gas

Publications (3)

Publication Number Publication Date
ITRM910751A0 ITRM910751A0 (en) 1991-10-07
ITRM910751A1 true ITRM910751A1 (en) 1993-04-07
IT1249451B IT1249451B (en) 1995-02-23

Family

ID=6415974

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM910751A IT1249451B (en) 1990-10-10 1991-10-07 ARRANGEMENT OF CATALYSTS FOR THE REDUCTION OF NITROGEN OXIDES.

Country Status (6)

Country Link
BE (1) BE1006164A3 (en)
CH (1) CH681429A5 (en)
DE (1) DE4032085A1 (en)
DK (1) DK171491A (en)
ES (1) ES2036473B1 (en)
IT (1) IT1249451B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59307293D1 (en) * 1992-02-10 1997-10-16 Man Nutzfahrzeuge Ag Device for the catalytic NOX reduction
CA2088713C (en) * 1992-02-24 1999-11-16 Hans Thomas Hug Cleaning exhaust gases from combustion installations
DE4214183A1 (en) * 1992-04-30 1993-06-09 Daimler Benz Ag Exhaust gas treatment for IC (diesel) engine - has reducing catalyst for nitrogen oxide with ammonia addition, and downstream oxidative catalyst
EP0611594A1 (en) * 1993-02-17 1994-08-24 Siemens Aktiengesellschaft Catalyst for converting reactants in a gas mixture
ATE133752T1 (en) * 1993-03-26 1996-02-15 Siemens Ag CATALYST FOR REDUCING NITROGEN OXIDE IN THE EXHAUST GAS OF A COMBUSTION ENGINE
JPH09500164A (en) * 1993-07-12 1997-01-07 プラチナム プラス インコーポレーテッド Method for reducing NOx and particulate emissions from diesel engines
DE19617563C2 (en) * 1996-05-02 2000-06-15 Daimler Chrysler Ag Catalytic converter system for a diesel engine
US8833062B1 (en) 2013-03-15 2014-09-16 Daimier Ag Catalytic reduction of NOx
GB9802504D0 (en) 1998-02-06 1998-04-01 Johnson Matthey Plc Improvements in emission control
JP3482874B2 (en) * 1998-05-28 2004-01-06 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
JP3733834B2 (en) * 2000-05-02 2006-01-11 日産自動車株式会社 Exhaust gas purification device for internal combustion engine
DE10128414A1 (en) 2001-06-12 2002-12-19 Daimler Chrysler Ag Exhaust gas system for cleaning internal combustion engine exhaust gases comprises a reducing agent supply having a hydrogen-producing unit for enriching the exhaust gas with hydrogen
DE10207986A1 (en) 2002-02-25 2003-09-04 Daimler Chrysler Ag Emission control system for an internal combustion engine
US6846464B2 (en) * 2002-11-20 2005-01-25 Ford Global Technologies, Llc Bimodal catalyst-urea SCR system for enhanced NOx conversion and durability
US7481983B2 (en) 2004-08-23 2009-01-27 Basf Catalysts Llc Zone coated catalyst to simultaneously reduce NOx and unreacted ammonia
FR2877693B1 (en) * 2004-11-08 2007-04-13 Peugeot Citroen Automobiles Sa EXHAUST GAS NOx TREATMENT SYSTEM OF A MOTOR VEHICLE THERMAL MOTOR
US8850802B1 (en) 2013-03-15 2014-10-07 Daimler Ag Catalytic reduction of NOx

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5332788B2 (en) * 1973-10-12 1978-09-09
GB1560184A (en) * 1977-05-31 1980-01-30 Caterpillar Tractor Co Dual catalyst nitric oxide reduction
DE3332663C2 (en) * 1983-09-10 1987-02-19 L. & C. Steinmüller GmbH, 5270 Gummersbach Method for optimising the reduction of NO↓x↓ in flue gases from fossil fuel-fired combustion plants
DE8424417U1 (en) * 1984-08-17 1986-07-10 Lentjes BWE Energietechnik GmbH, 4000 Düsseldorf Device for the selective catalytic reduction of nitrogen oxides
DE3505648C2 (en) * 1985-02-19 1987-02-19 Didier Engineering Gmbh, 4300 Essen Process for the preparation of a catalyst containing iron oxide, chromium oxide and manganese oxide for the selective reduction of nitrogen oxides in exhaust gases by means of ammonia
DE3544320A1 (en) * 1985-12-14 1987-08-27 Rennebeck Klaus Cascade sequence catalysation using series connection of catalysts in dependence on the reaction temperature
DE3637395A1 (en) * 1986-11-03 1988-05-05 Thyssen Industrie Apparatus for the dinitration of flue gases
DE3733501A1 (en) * 1987-10-03 1989-04-13 Ruhrgas Ag Process for reducing emissions in the operation of stationary internal-combustion engines
FR2622126B1 (en) * 1987-10-21 1991-06-14 Procatalyse Ste Fse Produits C CATALYST FOR THE TREATMENT OF EXHAUST GASES FROM INTERNAL COMBUSTION ENGINES AND MANUFACTURING METHOD THEREOF

Also Published As

Publication number Publication date
CH681429A5 (en) 1993-03-31
BE1006164A3 (en) 1994-05-31
DK171491D0 (en) 1991-10-09
DE4032085A1 (en) 1992-04-16
ES2036473B1 (en) 1994-03-01
IT1249451B (en) 1995-02-23
ES2036473A1 (en) 1993-05-16
DK171491A (en) 1992-04-11
ITRM910751A0 (en) 1991-10-07

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Legal Events

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0001 Granted