TW200744742A - Apparatus for purifying exhaust gas of an internal combustion engine - Google Patents

Apparatus for purifying exhaust gas of an internal combustion engine

Info

Publication number
TW200744742A
TW200744742A TW096114230A TW96114230A TW200744742A TW 200744742 A TW200744742 A TW 200744742A TW 096114230 A TW096114230 A TW 096114230A TW 96114230 A TW96114230 A TW 96114230A TW 200744742 A TW200744742 A TW 200744742A
Authority
TW
Taiwan
Prior art keywords
catalytic converter
exhaust gas
feed conduit
hydrolysis catalytic
combustion engine
Prior art date
Application number
TW096114230A
Other languages
Chinese (zh)
Inventor
Rolf Bruck
Marc Brugger
Thomas Harig
Peter Hirth
Ulf Klein
Original Assignee
Emitec Emissionstechnologie
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 Emitec Emissionstechnologie filed Critical Emitec Emissionstechnologie
Publication of TW200744742A publication Critical patent/TW200744742A/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • 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
    • 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
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2067—Urea
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/40—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a hydrolysis catalyst
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/11—Adding substances to exhaust gases the substance or part of the dosing system being cooled
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Toxicology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)

Abstract

The apparatus (1) according to the invention for purifying exhaust gas (2) of an internal combustion engine, comprising at least a feed conduit (4) for feeding an aqueous solution, a hydrolysis catalytic converter (5) connected to the feed conduit (4) and an SCR catalytic converter (7), exhaust gas (2) being able to flow through the SCR catalytic converter (7), is distinguished by the fact that there is formed at least one rod-shaped heating element (9) by means of which at least one of the following components can be heated: (a) at least parts of the feed conduit (4), and (b) the hydrolysis catalytic converter (5). The apparatus (1) according to the invention permits the formation, as a compact structure, of a feed conduit (4) heated by a rod-shaped element (9), and of a corresponding hydrolysis catalytic converter (5), with which an aqueous solution containing urea can be evaporated and then hydrolysed to a gas stream (22) containing ammonia. This gas stream (22) serves as reducing agent in the SCR process. The compact arrangement allows installation even in very confined space conditions. By means of the hydrolysis catalytic converter (5), through which exhaust gas does not flow, the volume of the hydrolysis catalytic converter (5) can be decisively reduced, since significantly smaller mass flows of gas must be hydrolysed therein.
TW096114230A 2006-05-16 2007-04-23 Apparatus for purifying exhaust gas of an internal combustion engine TW200744742A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006023148A DE102006023148A1 (en) 2006-05-16 2006-05-16 Device for the treatment of exhaust gas of an internal combustion engine

Publications (1)

Publication Number Publication Date
TW200744742A true TW200744742A (en) 2007-12-16

Family

ID=38329594

Family Applications (1)

Application Number Title Priority Date Filing Date
TW096114230A TW200744742A (en) 2006-05-16 2007-04-23 Apparatus for purifying exhaust gas of an internal combustion engine

Country Status (9)

Country Link
US (1) US20090120078A1 (en)
EP (1) EP2018470A1 (en)
JP (1) JP2009537725A (en)
KR (1) KR20090027635A (en)
CN (1) CN101443533A (en)
DE (1) DE102006023148A1 (en)
RU (1) RU2008149238A (en)
TW (1) TW200744742A (en)
WO (1) WO2007131786A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007022678A1 (en) * 2007-05-11 2008-11-13 Hydraulik-Ring Gmbh Ammonia based exhaust gas re-treatment unit feeds gaseous ammonia directly into exhaust gas flow of internal combustion, preferably diesel, engine; exhaust gas flows through exhaust tract free of urea-water vapor and urea-water solution
CN101678242B (en) 2007-05-16 2013-01-02 排放技术有限公司 Evaporator for mobile anhydrous ammonia production, and method for manufacturing such an evaporator
JP5336519B2 (en) * 2008-02-29 2013-11-06 エミテック ゲゼルシヤフト フユア エミツシオンステクノロギー ミツト ベシユレンクテル ハフツング Evaporator for producing gaseous ammonia
EP2257351B1 (en) * 2008-02-29 2014-12-17 Emitec Gesellschaft für Emissionstechnologie mbH Evaporation unit for producing a gas comprising at least one reduction agent precursor and/or a reduction agent
DE202008003270U1 (en) * 2008-03-06 2009-10-01 Rehau Ag + Co Assembly for receiving and heating a urea-water solution
DE102008051168A1 (en) * 2008-10-10 2010-04-15 Emitec Gesellschaft Für Emissionstechnologie Mbh Method for operating an evaporation unit for generating gaseous ammonia
DE102009000097A1 (en) 2009-01-09 2010-07-15 Robert Bosch Gmbh Conveyor for an SCR system
DE102009025135A1 (en) * 2009-06-17 2010-12-23 Emitec Gesellschaft Für Emissionstechnologie Mbh Device for evaporating a urea-water solution
SE535355C2 (en) * 2010-11-08 2012-07-03 Scania Cv Ab Exhaust after-treatment device and process for after-treatment of exhaust gases
US8875499B2 (en) 2011-03-18 2014-11-04 Hino Motors Ltd. Urea solution reformer and exhaust gas purifier using same
FR3006681B1 (en) * 2013-06-11 2015-07-17 Faurecia Sys Echappement AMMONIA STORAGE CARTRIDGE WITH OPTIMIZED FILL TIME, IN PARTICULAR FOR A GAS EXHAUST SYSTEM OF A MOTOR VEHICLE
EP2975233B1 (en) * 2014-07-18 2018-06-06 Plastic Omnium Advanced Innovation and Research Ammonia precursor generating system for use in a vehicle
DE202016002697U1 (en) * 2016-04-27 2017-07-28 Tropinon Enterprises Ltd. Device for the hydrolytic production of ammonia
US11885251B2 (en) 2022-05-25 2024-01-30 Tenneco Automotive Operating Company Inc. Selective catalytic reduction catalyst pre-heating burner assembly and method of controlling burner emissions

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4038054A1 (en) * 1990-11-29 1992-06-04 Man Technologie Gmbh METHOD AND DEVICE FOR SELECTIVE CATALYTIC NO (DOWN ARROW) X (DOWN ARROW) REDUCTION IN OXYGEN-BASED EXHAUST GASES
DE19913462A1 (en) 1999-03-25 2000-09-28 Man Nutzfahrzeuge Ag Urea hydrolysis to generate ammonia for reducing nitrogen oxides in an exhaust gas catalytic converter comprises reacting urea with a side stream of exhaust gas
DE19919472C2 (en) * 1999-04-29 2001-04-19 Bosch Gmbh Robert Device and method for the detection of ammonia
US7615200B2 (en) * 2000-12-01 2009-11-10 Fuel Tech, Inc. Selective catalytic reduction of NOx enabled by urea decomposition in heat-exchanger bypass
JP4131784B2 (en) * 2001-05-09 2008-08-13 日産ディーゼル工業株式会社 Exhaust gas purification device for internal combustion engine
US6601385B2 (en) * 2001-10-17 2003-08-05 Fleetguard, Inc. Impactor for selective catalytic reduction system
DE20119514U1 (en) * 2001-12-03 2002-02-28 Purem Abgassysteme Gmbh & Co Reduktionsmitteldosiereinrichtung
DE10206028A1 (en) * 2002-02-14 2003-08-28 Man Nutzfahrzeuge Ag Process and apparatus for producing ammonia
US20040124259A1 (en) * 2002-09-13 2004-07-01 The Ohio State University Liquid atomization system for automotive applications
DE10342003A1 (en) * 2003-09-05 2005-03-31 Robert Bosch Gmbh Apparatus for processing a reducing agent precursor solution for exhaust aftertreatment
DE102004004738A1 (en) * 2004-01-30 2005-08-18 Robert Bosch Gmbh Method and device for the after-treatment of an exhaust gas of an internal combustion engine
DE102004031624A1 (en) * 2004-06-30 2006-02-02 Robert Bosch Gmbh Method for operating a catalyst used for cleaning the exhaust gas of an internal combustion engine and apparatus for carrying out the method
DE102004042225B4 (en) * 2004-09-01 2017-08-31 MAN Truck & Bus Aktiengesellschaft Apparatus and method for producing ammonia from solid urea pellets
WO2006025110A1 (en) * 2004-09-02 2006-03-09 Nissan Diesel Motor Co., Ltd. Exhaust gas purifier
DE102004048075A1 (en) * 2004-10-02 2006-04-06 Robert Bosch Gmbh Dosing system for pollutant reduction in automotive exhaust gases

Also Published As

Publication number Publication date
US20090120078A1 (en) 2009-05-14
CN101443533A (en) 2009-05-27
EP2018470A1 (en) 2009-01-28
DE102006023148A1 (en) 2007-11-22
KR20090027635A (en) 2009-03-17
RU2008149238A (en) 2010-07-27
JP2009537725A (en) 2009-10-29
WO2007131786A1 (en) 2007-11-22

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