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MX2017005291A - Sistemas de tratamiento de emisiones con catalizadores twc y catalizadores scr-hct. - Google Patents

Sistemas de tratamiento de emisiones con catalizadores twc y catalizadores scr-hct.

Info

Publication number
MX2017005291A
MX2017005291A MX2017005291A MX2017005291A MX2017005291A MX 2017005291 A MX2017005291 A MX 2017005291A MX 2017005291 A MX2017005291 A MX 2017005291A MX 2017005291 A MX2017005291 A MX 2017005291A MX 2017005291 A MX2017005291 A MX 2017005291A
Authority
MX
Mexico
Prior art keywords
catalyst
scr
catalysts
hct
twc
Prior art date
Application number
MX2017005291A
Other languages
English (en)
Inventor
Zheng Xiaolai
Wang Xiaoming
Xue Wen-Mei
Wassermann Knut
Deeba Michel
Ji Chunxin
J Schladt Matthew
Luo Tian
Original Assignee
Basf 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 Basf Corp filed Critical Basf Corp
Publication of MX2017005291A publication Critical patent/MX2017005291A/es

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    • 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
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific 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
    • 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
    • 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
    • F01N3/101—Three-way catalysts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/024—Multiple impregnation or coating
    • B01J37/0244—Coatings comprising several layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
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    • 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
    • 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
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    • 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
    • B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
    • B01D53/9477—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on separate bricks, e.g. exhaust systems
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    • B01J29/76—Iron group metals or copper
    • B01J29/763—CHA-type, e.g. Chabazite, LZ-218
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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
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  • Crystallography & Structural Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Toxicology (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Catalysts (AREA)

Abstract

Se proporciona un sistema de tratamiento de emisiones para un flujo de escape de un motor de combustión interna, que incluye hidrocarburos, monóxido de carbono y óxidos de nitrógeno. El sistema descrito puede incluir un conducto de escape en comunicación fluida con el motor de combustión interna mediante un colector de escape; un primer catalizador de conversión de tres vías (TWC-1) ubicado corriente abajo del motor de combustión interna en el conducto de escape; un catalizador SCR-HCT que comprende un catalizador de reducción catalítica selectiva y una trampa de hidrocarburos corriente abajo del TWC-1 en el conducto de escape; y un tercer catalizador corriente abajo de la combinación SCR-HCT en el conducto de escape, en donde el tercer catalizador comprende un metal del grupo platino (PGM), por ejemplo, en una cantidad eficaz para oxidar hidrocarburos. También se proporcionan métodos para elaborar y usar tales sistemas y sus componentes.
MX2017005291A 2014-10-21 2015-10-21 Sistemas de tratamiento de emisiones con catalizadores twc y catalizadores scr-hct. MX2017005291A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201462066509P 2014-10-21 2014-10-21
PCT/US2015/056708 WO2016065034A1 (en) 2014-10-21 2015-10-21 Emissions treatment systems with twc catalysts and scr-hct catalysts

Publications (1)

Publication Number Publication Date
MX2017005291A true MX2017005291A (es) 2017-08-15

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KR102429402B1 (ko) 2022-08-05
CN107148512A (zh) 2017-09-08
CN107148512B (zh) 2020-12-15
CA2961232A1 (en) 2016-04-28
ZA201703326B (en) 2019-07-31
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RU2017117495A (ru) 2018-11-22
US20170274321A1 (en) 2017-09-28
US9931596B2 (en) 2018-04-03
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WO2016065034A1 (en) 2016-04-28
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