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ES2036473B1 - CATALYST PROVISION FOR NITROGEN OXIDE REDUCTION - Google Patents

CATALYST PROVISION FOR NITROGEN OXIDE REDUCTION

Info

Publication number
ES2036473B1
ES2036473B1 ES9102221A ES9102221A ES2036473B1 ES 2036473 B1 ES2036473 B1 ES 2036473B1 ES 9102221 A ES9102221 A ES 9102221A ES 9102221 A ES9102221 A ES 9102221A ES 2036473 B1 ES2036473 B1 ES 2036473B1
Authority
ES
Spain
Prior art keywords
nitrogen oxide
exhaust gas
reduction
oxide reduction
catalyst provision
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES9102221A
Other languages
Spanish (es)
Other versions
ES2036473A1 (en
Inventor
Kartmut Kainer
Daniel Grimm
Wilfried Schnelle
Wilfried Schutz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Didier Werke AG
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 ES2036473A1 publication Critical patent/ES2036473A1/en
Application granted granted Critical
Publication of ES2036473B1 publication Critical patent/ES2036473B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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)

Abstract

DISPOSICION CATALIZADORA PARA REDUCCION DE OXIDO DE NITROGENO. EN UNA DISPOSICION CATALIZADORA PARA REDUCCION DE OXIDO DE NITROGENO EN UN GAS DE ESCAPE, ESTE ENTRA EN UNA AMPLIA GAMA DE TEMPERATURAS. PARA CONSEGUIRSE EN ESTA GAMA DE TEMPERATURAS UN SUFICIENTE RENDIMIENTO DE DESNITROGENADO Y UNA ADAPTABILIDAD A CADA GAMA DE TEMPERATURAS DE GASES DE ESCAPE, SE HAN DISPUETO EN EL SENTIDO DE CIRCULACION DE LOS GASES DE ESCAPE UNO A CONTINUACION DE OTRO AL MENOS DOS LECHOS DE CATALIZADOR (7, 8) DE DIFERENTES MATERIALES DE CATALIZADOR PARA REDUCCION DE OXIDO DE NITROGENO. LOS DIFERENTES MATERIALES DE CATALIZADOR PRESENTAN SU EFECTO CATALITICO MAS ACUSADO EN DIFERENTES ZONAS PARCIALES PROXIMAS DE LA GAMA DE TEMPERATURA DE GASES DE ESCAPE.CATALYST PROVISION FOR REDUCTION OF NITROGEN OXIDE. IN A CATALYTIC DISPOSAL FOR THE REDUCTION OF NITROGEN OXIDE IN AN EXHAUST GAS, THIS ENTERS A WIDE RANGE OF TEMPERATURES. IN ORDER TO ACHIEVE IN THIS TEMPERATURE RANGE SUFFICIENT PERFORMANCE OF DENITROGENATE AND ADAPTABILITY TO EACH RANGE OF EXHAUST GAS TEMPERATURES, THEY HAVE BEEN DISPOSED IN THE DIRECTION OF EXHAUST GAS TWO OF THEM EACH OTHER BY EACH OTHER 7, 8) OF DIFFERENT CATALYST MATERIALS FOR REDUCTION OF NITROGEN OXIDE. THE DIFFERENT CATALYST MATERIALS PRESENT THEIR MOST CHARGED CATALYTIC EFFECT IN DIFFERENT PROXIMATE PARTIAL ZONES OF THE EXHAUST GAS TEMPERATURE RANGE.

ES9102221A 1990-10-10 1991-10-08 CATALYST PROVISION FOR NITROGEN OXIDE REDUCTION Expired - Lifetime ES2036473B1 (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 (2)

Publication Number Publication Date
ES2036473A1 ES2036473A1 (en) 1993-05-16
ES2036473B1 true ES2036473B1 (en) 1994-03-01

Family

ID=6415974

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9102221A Expired - Lifetime ES2036473B1 (en) 1990-10-10 1991-10-08 CATALYST PROVISION FOR NITROGEN OXIDE REDUCTION

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
ATE157901T1 (en) * 1992-02-10 1997-09-15 Man Nutzfahrzeuge Ag DEVICE FOR 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
DK0617199T3 (en) * 1993-03-26 1996-07-01 Siemens Ag Catalyst for nitric oxide reduction in the exhaust gas from an internal combustion engine
DE69425972T2 (en) * 1993-07-12 2001-05-23 Clean Diesel Technologies Inc., Stamford METHOD FOR REDUCING NOX EMISSIONS AND PARTICLES FROM A DIESEL ENGINE
DE19617563C2 (en) * 1996-05-02 2000-06-15 Daimler Chrysler Ag Catalytic converter system for a diesel engine
GB9802504D0 (en) 1998-02-06 1998-04-01 Johnson Matthey Plc Improvements in emission control
US8833062B1 (en) 2013-03-15 2014-09-16 Daimier Ag Catalytic reduction of NOx
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
BE1006164A3 (en) 1994-05-31
CH681429A5 (en) 1993-03-31
DK171491A (en) 1992-04-11
IT1249451B (en) 1995-02-23
ES2036473A1 (en) 1993-05-16
ITRM910751A0 (en) 1991-10-07
DE4032085A1 (en) 1992-04-16
ITRM910751A1 (en) 1993-04-07
DK171491D0 (en) 1991-10-09

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Legal Events

Date Code Title Description
FA2A Application withdrawn

Effective date: 20050301