WO2009008147A1 - 排気浄化装置 - Google Patents

排気浄化装置 Download PDF

Info

Publication number
WO2009008147A1
WO2009008147A1 PCT/JP2008/001794 JP2008001794W WO2009008147A1 WO 2009008147 A1 WO2009008147 A1 WO 2009008147A1 JP 2008001794 W JP2008001794 W JP 2008001794W WO 2009008147 A1 WO2009008147 A1 WO 2009008147A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust
purification device
upstream
exhaust purification
nox
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.)
Ceased
Application number
PCT/JP2008/001794
Other languages
English (en)
French (fr)
Inventor
Masahiko Yabe
Haruyuki Yokota
Takaharu Shimizu
Hiroyuki Ninomiya
Shinya Sato
Yoshihiro Tagami
Yutaka Tanai
Satoshi Watanabe
Tomihisa Oda
Shunsuke Toshioka
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.)
Hino Motors Ltd
Toyota Motor Corp
Original Assignee
Hino Motors Ltd
Toyota Motor Corp
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 Hino Motors Ltd, Toyota Motor Corp filed Critical Hino Motors Ltd
Publication of WO2009008147A1 publication Critical patent/WO2009008147A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/2066—Selective catalytic reduction [SCR]
    • 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
    • B01D53/9495—Controlling the catalytic process
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/404—Nitrogen oxides other than dinitrogen oxide
    • 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
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • 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
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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

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

Abstract

　本発明の課題は、排気温度の低い運転状態が長く続くような運行形態の車両であっても、従来より低い排気温度から良好なＮＯx低減効果を得られるようにすることにある。排気管４の途中に酸素共存下でも選択的にＮＯxをアンモニアと反応させ得る選択還元型触媒５を設け且つ該選択還元型触媒５より上流側の排気管４内に還元剤として尿素水６を添加してＮＯxを還元浄化するようにした排気浄化装置に関し、尿素水６の添加位置より上流側の排気管４に酸化触媒９を設け、該酸化触媒９より上流側で排気ガス３中に燃料を添加する燃料添加手段（燃料噴射装置１４）を備える。
PCT/JP2008/001794 2007-07-06 2008-07-04 排気浄化装置 Ceased WO2009008147A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-178711 2007-07-06
JP2007178711A JP2009013930A (ja) 2007-07-06 2007-07-06 排気浄化装置

Publications (1)

Publication Number Publication Date
WO2009008147A1 true WO2009008147A1 (ja) 2009-01-15

Family

ID=40228340

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/001794 Ceased WO2009008147A1 (ja) 2007-07-06 2008-07-04 排気浄化装置

Country Status (2)

Country Link
JP (1) JP2009013930A (ja)
WO (1) WO2009008147A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016089727A (ja) * 2014-11-05 2016-05-23 ヤンマー株式会社 エンジン
CN117869050A (zh) * 2019-09-13 2024-04-12 康明斯排放处理公司 包含预热氧化催化剂的后处理系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005256727A (ja) * 2004-03-11 2005-09-22 Nissan Diesel Motor Co Ltd エンジンの排気浄化装置
JP2007154755A (ja) * 2005-12-05 2007-06-21 Toyota Motor Corp 内燃機関の排気浄化システム

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005256727A (ja) * 2004-03-11 2005-09-22 Nissan Diesel Motor Co Ltd エンジンの排気浄化装置
JP2007154755A (ja) * 2005-12-05 2007-06-21 Toyota Motor Corp 内燃機関の排気浄化システム

Also Published As

Publication number Publication date
JP2009013930A (ja) 2009-01-22

Similar Documents

Publication Publication Date Title
WO2009041227A1 (ja) 排ガス浄化システムおよび排ガス浄化方法
ATE443203T1 (de) Abgasnachbehandlungsvorrichtung
WO2009016781A1 (ja) 排気浄化装置
ATE494466T1 (de) Abgasreinigungsvorrichtung
GB2461672A (en) Exhaust system utilizing a low-temperature oxidation catalyst
WO2009001623A1 (ja) ＮＯｘ浄化システム及びＮＯｘ浄化システムの制御方法
WO2009008148A1 (ja) 排気浄化装置
WO2009060599A1 (ja) 排気浄化装置
WO2009011080A1 (ja) 排気浄化装置
EP2357331A4 (en) EMISSION CONTROL DEVICE
WO2009037795A1 (ja) 排気浄化装置
WO2011032020A3 (en) Low temperature selective catalytic reduction catalyst and associated systems and methods
JP2009216019A (ja) ＮＯｘ浄化システムの制御方法及びＮＯｘ浄化システム
WO2008126648A1 (ja) ＮＯｘ浄化システム及びＮＯｘ浄化システムの制御方法
ATE543984T1 (de) Betriebsverfahren für ein abgasbehandlungssystem
ATE503089T1 (de) Motorabgasreinigungsvorrichtung
ATE523669T1 (de) Abgasnachbehandlungssystem
WO2009016780A1 (ja) 排気浄化装置
ATE487040T1 (de) Entschwefelungsstrategie für nox-adsorber mit reformertemperaturverwaltung
WO2006086251A3 (en) Targeted duct injection for so3 control
WO2009140245A3 (en) Selective catalytic reduction using controlled catalytic deactivation
WO2009041228A1 (ja) 排ガス浄化システムおよび排ガス浄化方法
WO2009044495A1 (ja) 排気浄化装置
RU2010116531A (ru) Способ уменьшения эмиссии двуокиси азота в автомобиле с двигателем внутреннего сгорания, работающим на обедненных смесях
JP2006009608A (ja) 排気浄化装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08776803

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08776803

Country of ref document: EP

Kind code of ref document: A1