BRPI0412966A - elemento filtrante de escapamento de diesel melhorado e processo para depositar ìons metálicos precipitados nas superfìcies de uma parede porosa rìgida - Google Patents

elemento filtrante de escapamento de diesel melhorado e processo para depositar ìons metálicos precipitados nas superfìcies de uma parede porosa rìgida

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Publication number
BRPI0412966A
BRPI0412966A BRPI0412966-0A BRPI0412966A BRPI0412966A BR PI0412966 A BRPI0412966 A BR PI0412966A BR PI0412966 A BRPI0412966 A BR PI0412966A BR PI0412966 A BRPI0412966 A BR PI0412966A
Authority
BR
Brazil
Prior art keywords
porous wall
rigid porous
metal ions
exhaust gas
precipitated metal
Prior art date
Application number
BRPI0412966-0A
Other languages
English (en)
Inventor
Cheng G Li
Robin P Ziebarth
Martin C Cornell
Steven B Swartzmiller
Original Assignee
Dow Global Technologies Inc
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 Dow Global Technologies Inc filed Critical Dow Global Technologies Inc
Publication of BRPI0412966A publication Critical patent/BRPI0412966A/pt

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/42—Platinum
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B01D53/34—Chemical or biological purification of waste gases
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    • 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
    • B01D53/9463—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 one brick
    • B01D53/9468—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 one brick in different layers
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    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
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  • Organic Chemistry (AREA)
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  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Toxicology (AREA)
  • Biomedical Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Catalysts (AREA)
  • Filtering Materials (AREA)

Abstract

"ELEMENTO FILTRANTE DE ESCAPAMENTO DE DIESEL MELHORADO E PROCESSO PARA DEPOSITAR ìONS METáLICOS PRECIPITADOS NAS SUPERFìCIES DE UMA PAREDE POROSA RìGIDA". Elemento filtrante de escapamento de Diesel melhorado do tipo tendo uma porção de parede porosa rígida formada de uma cerâmica acicular (tal como mulita acicular) a porção de parede porosa tendo um primeiro lado e um segundo lado, a porção de parede porosa sendo revestida com um catalisador de metal precioso e um absorvente de NO~ x~, tal que quando o gás de escapamento de um motor Diesel atravessa a parede porosa rígida do primeiro lado para o segundo lado, o gás de escapamento contendo oxigênio em excesso, NO~ x~, e fuligem, a fuligem no gás de escapamento é aprisionada dentro da parede porosa rígida e oxidada cataliticamente a dióxido de carbono, o NO é oxidado cataliticamente a NO~ 2~, o qual é depois absorvido pelo absorvente de NO~ x~, e tal que quando o gás de escapamento contém monóxido de carbono e hidrocarboneto em excesso, então o absorvente de NO~ x~ é regenerado e, o hidrocarboneto e monóxido de carbono remanescente são convertidos cataliticamente a nitrogênio e dióxido de carbono. Além disso, um processo para depositar íons metálicos precipitados nas superfícies de tal parede porosa rígida.
BRPI0412966-0A 2003-08-29 2004-08-27 elemento filtrante de escapamento de diesel melhorado e processo para depositar ìons metálicos precipitados nas superfìcies de uma parede porosa rìgida BRPI0412966A (pt)

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PCT/US2004/027852 WO2005021138A2 (en) 2003-08-29 2004-08-27 Improved diesel exhaust filter

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CA2533697C (en) 2013-02-12
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JP2007503983A (ja) 2007-03-01
CN1845780A (zh) 2006-10-11
KR20060083450A (ko) 2006-07-20
RU2006110029A (ru) 2006-08-10
RU2350379C2 (ru) 2009-03-27
US8661794B2 (en) 2014-03-04
JP5782085B2 (ja) 2015-09-24
KR101117039B1 (ko) 2012-03-15
KR20110091818A (ko) 2011-08-12
ZA200600757B (en) 2007-05-30
CA2794531A1 (en) 2005-03-10
KR101141875B1 (ko) 2012-05-08
WO2005021138A2 (en) 2005-03-10
EP1677896A2 (en) 2006-07-12
CA2533697A1 (en) 2005-03-10
EP1677896B1 (en) 2013-04-17
US20060193757A1 (en) 2006-08-31
CN1845780B (zh) 2010-06-16
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