ES2086740T3 - Convertidor catalitico con una guarnicion monolitica que esta constituida por escamas de vermiculita parcialmente deshidratadas. - Google Patents

Convertidor catalitico con una guarnicion monolitica que esta constituida por escamas de vermiculita parcialmente deshidratadas.

Info

Publication number
ES2086740T3
ES2086740T3 ES92910752T ES92910752T ES2086740T3 ES 2086740 T3 ES2086740 T3 ES 2086740T3 ES 92910752 T ES92910752 T ES 92910752T ES 92910752 T ES92910752 T ES 92910752T ES 2086740 T3 ES2086740 T3 ES 2086740T3
Authority
ES
Spain
Prior art keywords
monolith
catalytic converter
garnish
monolithic
constituted
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
ES92910752T
Other languages
English (en)
Inventor
Roger L Langer
Richard P Merry
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Application granted granted Critical
Publication of ES2086740T3 publication Critical patent/ES2086740T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/92Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9445Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/9454Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02Granular materials, e.g. microballoons
    • C04B14/04Silica-rich materials; Silicates
    • C04B14/20Mica; Vermiculite
    • C04B14/204Mica; Vermiculite expanded
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust 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
    • F01N3/24Exhaust 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 constructional aspects of converting apparatus
    • F01N3/28Construction of catalytic reactors
    • F01N3/2839Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
    • F01N3/2857Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing the mats or gaskets being at least partially made of intumescent material, e.g. unexpanded vermiculite
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2350/00Arrangements for fitting catalyst support or particle filter element in the housing
    • F01N2350/02Fitting ceramic monoliths in a metallic housing
    • F01N2350/06Fitting ceramic monoliths in a metallic housing with means preventing gas flow by-pass or leakage
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/25Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/25Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/251Mica
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/25Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/254Polymeric or resinous material
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982Particulate matter [e.g., sphere, flake, etc.]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Civil Engineering (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Laminated Bodies (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Catalysts (AREA)

Abstract

LA INVENCION PERTENECE A MATERIALES LOS CUALES RESISTEN LA COMBUSTION Y SE EXPANDEN CUANDO SE SOMETEN A ELEVADAS TEMPERATURAS, Y SON POR ESTO ADECUADOS PARA USO COMO ALFOMBRAS DE MONTAJE PARA MONOLITOS EN CONVERTIDORES CATALITICOS. MATERIALES INTUMESCENTES PREVIAMENTE CONOCIDOS, TALES COMO VERMICULITA, EXHIBEN CONTRACCION ENTRE ALREDEDOR DE 100 C Y 400 C, LO CUAL PUEDE OCASIONAR QUE UN MONOLITO LLEGUE A DESPEGARSE DEL CAJEADO DURANTE LA ELEVACION DE TEMPERATURA DEL CONVERTIDOR MONOLITICO. UN MONOLITO PUEDE SER MONTADO EN UN CONVERTIDOR CATALITICO JUNTO A UN MATERIAL QUE CONTIENE ESCAMAS DE VERMICULITA INTUMESCENTE QUE TIENE UN CONTENIDO UNIFORME DE AGUA ENLAZADA QUIMICAMENTE, DE 1,0 A 3,2 % DE PESO Y UNA DENSIDAD DE VOLUMEN UNIFORME, DE 0,2 A 0,9 G/CM3. TAL COMO UN MONTAJE QUE PRODUCE UN BUEN SOPORTE PARA EL MONOLITO A ALTAS TEMPERATURAS, EJERCE ADECUADAS FUERZAS DE RETENCION A TEMPERATURAS DE OPERACION SIN PELIGRO DE ROMPER EL MONOLITO, Y NO INCURRE EN REDUCCION GRADUAL DE LAS FUERZAS DE RETENCION A TEMPERATURAS DE OPERACION.
ES92910752T 1991-04-18 1992-03-16 Convertidor catalitico con una guarnicion monolitica que esta constituida por escamas de vermiculita parcialmente deshidratadas. Expired - Lifetime ES2086740T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/687,228 US5254410A (en) 1991-04-18 1991-04-18 Partially dehydrated vermiculite flakes and method of making same

Publications (1)

Publication Number Publication Date
ES2086740T3 true ES2086740T3 (es) 1996-07-01

Family

ID=24759586

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92910752T Expired - Lifetime ES2086740T3 (es) 1991-04-18 1992-03-16 Convertidor catalitico con una guarnicion monolitica que esta constituida por escamas de vermiculita parcialmente deshidratadas.

Country Status (7)

Country Link
US (1) US5254410A (es)
EP (1) EP0580743B1 (es)
JP (1) JPH06506662A (es)
CA (1) CA2103706A1 (es)
DE (1) DE69210602T2 (es)
ES (1) ES2086740T3 (es)
WO (1) WO1992018435A1 (es)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5736109A (en) * 1995-06-30 1998-04-07 Minnesota Mining And Manufacturing Company Intumescent sheet material and paste with organic binder
US5523059A (en) * 1995-06-30 1996-06-04 Minnesota Mining And Manufacturing Company Intumescent sheet material with glass fibers
JPH11509510A (ja) * 1995-06-30 1999-08-24 ミネソタ・マイニング・アンド・マニュファクチャリング・カンパニー 膨張シート材
US5853675A (en) * 1995-06-30 1998-12-29 Minnesota Mining And Manufacturing Company Composite mounting system
US5686039A (en) * 1995-06-30 1997-11-11 Minnesota Mining And Manufacturing Company Methods of making a catalytic converter or diesel particulate filter
US6726884B1 (en) * 1996-06-18 2004-04-27 3M Innovative Properties Company Free-standing internally insulating liner
US5882608A (en) * 1996-06-18 1999-03-16 Minnesota Mining And Manufacturing Company Hybrid mounting system for pollution control devices
US6051193A (en) 1997-02-06 2000-04-18 3M Innovative Properties Company Multilayer intumescent sheet
CN1098771C (zh) 1997-02-06 2003-01-15 美国3M公司 多层膨胀片
US6923942B1 (en) 1997-05-09 2005-08-02 3M Innovative Properties Company Compressible preform insulating liner
US20010051116A1 (en) 1997-11-17 2001-12-13 Minnesota Mining And Manufacturing Company Surface tension relieved mounting material
JP5059284B2 (ja) * 2001-10-09 2012-10-24 スリーエム イノベイティブ プロパティズ カンパニー 生体溶解性無機ファイバーと雲母バインダーとを含有する組成物
CN1331566C (zh) * 2002-09-30 2007-08-15 尤尼弗瑞克斯有限公司 废气处理装置及其制造方法
KR101148724B1 (ko) 2003-01-22 2012-05-29 쓰리엠 이노베이티브 프로퍼티즈 컴파니 성형 3차원 절연체
EP1495807A1 (en) * 2003-06-30 2005-01-12 3M Innovative Properties Company Mounting mat for mounting monolith in a pollution control device
US7645426B2 (en) * 2004-04-14 2010-01-12 3M Innovative Properties Company Sandwich hybrid mounting mat
US7550118B2 (en) * 2004-04-14 2009-06-23 3M Innovative Properties Company Multilayer mats for use in pollution control devices
KR20070048662A (ko) 2004-06-29 2007-05-09 유니프랙스 아이 엘엘씨 배기 가스 처리 장치 및 배기 가스 처리 장치의 제조 방법
US8124022B2 (en) * 2004-12-13 2012-02-28 3M Innovative Properties Company Mounting mats and pollution control devices using same
US20060141412A1 (en) * 2004-12-27 2006-06-29 Masten James H Burner plate and burner assembly
US20060141413A1 (en) * 2004-12-27 2006-06-29 Masten James H Burner plate and burner assembly
FI20050700A0 (fi) * 2005-07-01 2005-07-01 Turun Yliopisto Menetelmä vermikuliitin ammoniumionien oton parantamiseksi, absorptiomateriaali, sen käyttö ja menetelmä ammoniumin poistamiseksi ympäristöstä
CN101617082B (zh) * 2007-02-19 2012-12-12 3M创新有限公司 柔性纤维质材料、污染控制装置及其制造方法
CN104947318A (zh) * 2007-10-09 2015-09-30 3M创新有限公司 制备用于安装污染控制元件的安装垫的方法
EP2205838B1 (en) * 2007-10-09 2014-05-07 3M Innovative Properties Company Mounting mats including inorganic nanoparticles and method for making the same
CN101883666A (zh) * 2007-10-09 2010-11-10 3M创新有限公司 用于安装用于废气处理的污染控制元件的垫
WO2010024920A1 (en) 2008-08-29 2010-03-04 Unifrax I Llc Mounting mat with flexible edge protection and exhaust gas treatment device incorporating the mounting mat
JP2010112267A (ja) * 2008-11-06 2010-05-20 Ibiden Co Ltd マット材および排気ガス処理装置
WO2010074711A2 (en) 2008-12-15 2010-07-01 Unifrax I Llc Ceramic honeycomb structure skin coating
CN102459834B (zh) 2009-04-17 2017-02-08 尤尼弗瑞克斯 I 有限责任公司 排气处理装置
EP2464840A4 (en) 2009-08-10 2013-10-30 Unifrax I Llc PREFORM OR MOUNTING MATERIAL WITH SURFACE MASS VARIABLE AND DEVICE FOR TREATING EXHAUST GASES
EP2464836A2 (en) 2009-08-14 2012-06-20 Unifrax I LLC Mounting mat for exhaust gas treatment device
CN102686843B (zh) 2009-08-14 2015-04-01 尤尼弗瑞克斯I有限责任公司 多层基底支承体和排气处理装置
US8071040B2 (en) * 2009-09-23 2011-12-06 Unifax I LLC Low shear mounting mat for pollution control devices
CA2773757A1 (en) 2009-09-24 2011-03-31 Unifrax I Llc Multiple layer mat and exhaust gas treatment device
WO2011084558A1 (en) 2009-12-17 2011-07-14 Unifrax I Llc Use of microspheres in an exhaust gas treatment device mounting mat
KR20140130206A (ko) 2009-12-17 2014-11-07 유니프랙스 아이 엘엘씨 오염 제어 장치용 다층 장착 매트
CN106884701A (zh) 2009-12-17 2017-06-23 尤尼弗瑞克斯 I 有限责任公司 用于废气处理装置的安装垫
WO2012021817A2 (en) 2010-08-12 2012-02-16 Unifrax I Llc Exhaust gas treatment device
DK2603676T3 (en) 2010-08-13 2016-04-25 Unifrax I Llc Flexible mounting mat with edge protection and exhaust gas treatment device including the mat assembly
EP2638261A4 (en) 2010-11-11 2014-08-06 Unifrax I Llc SUPPORT MAT AND DEVICE FOR TREATING EXHAUST GASES
EP2848720B1 (en) 2013-09-12 2016-03-02 3M Innovative Properties Company Use of a lubricant in a mounting mat and method for making such a mat
PL3262287T3 (pl) 2015-02-24 2020-07-27 Unifrax I Llc Mata izolacyjna odporna na wysokie temperatury
US11364398B2 (en) * 2017-08-03 2022-06-21 Lawrence Livermore National Security, Llc Heat and fire resistant gel seal

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2965506D1 (en) * 1978-08-17 1983-07-07 Ici Plc Dry powder composition comprising vermiculite lamellae, process for its production and process for making shaped articles therefrom
US4305992A (en) * 1979-11-28 1981-12-15 Minnesota Mining And Manufacturing Company Intumescent sheet material
US4447491A (en) * 1981-06-17 1984-05-08 Imperial Chemical Industries Plc Network of bonded expanded polystyrene beads having chemically delaminated vermiculite impregnant
JPS58161967A (ja) * 1982-03-19 1983-09-26 株式会社豊田中央研究所 ひる石成形体およびその製造方法
US4385135A (en) * 1982-05-26 1983-05-24 Minnesota Mining And Manufacturing Company Intumescent sheet material containing low density fillers
USH254H (en) * 1984-07-19 1987-04-07 W. R. Grace & Co. Method of increasing the volume yield of exfoliated vermiculite
US4715987A (en) * 1986-05-12 1987-12-29 Corning Glass Works Method of treating phyllosilicates
US5079280A (en) * 1989-11-15 1992-01-07 W. R. Grace & Co.-Conn. Low temperature expandable vermiculite and intumescent sheet material containing same
US5116537A (en) * 1989-11-15 1992-05-26 W. R. Grace & Co.-Conn. Low temperature expandable vermiculite and intumescent sheet material containing same
US5151253A (en) * 1991-04-18 1992-09-29 Minnesota Mining And Manufacturing Company Catalytic converter having a monolith mounting of which is comprised of partially dehydrated vermiculite flakes

Also Published As

Publication number Publication date
DE69210602T2 (de) 1996-12-05
EP0580743A1 (en) 1994-02-02
DE69210602D1 (de) 1996-06-13
EP0580743B1 (en) 1996-05-08
JPH06506662A (ja) 1994-07-28
CA2103706A1 (en) 1992-10-19
US5254410A (en) 1993-10-19
WO1992018435A1 (en) 1992-10-29

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