WO2000079109A1 - Dispositif de conversion catalytique, muni d'un corps support lie par endroits a une enveloppe - Google Patents

Dispositif de conversion catalytique, muni d'un corps support lie par endroits a une enveloppe Download PDF

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Publication number
WO2000079109A1
WO2000079109A1 PCT/EP2000/005123 EP0005123W WO0079109A1 WO 2000079109 A1 WO2000079109 A1 WO 2000079109A1 EP 0005123 W EP0005123 W EP 0005123W WO 0079109 A1 WO0079109 A1 WO 0079109A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier body
sheet metal
layers
jacket
sheets
Prior art date
Application number
PCT/EP2000/005123
Other languages
German (de)
English (en)
Inventor
Johann Zehetner
Original Assignee
Emitec Gesellschaft Für Emissionstechnologie Mbh
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 Gesellschaft Für Emissionstechnologie Mbh filed Critical Emitec Gesellschaft Für Emissionstechnologie Mbh
Priority to JP2001505438A priority Critical patent/JP2003502569A/ja
Priority to EP00938753A priority patent/EP1192338A1/fr
Publication of WO2000079109A1 publication Critical patent/WO2000079109A1/fr
Priority to US10/026,242 priority patent/US20020182126A1/en

Links

Classifications

    • 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]
    • B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/88—Handling or mounting catalysts
    • B01D53/885—Devices in general for catalytic purification of waste gases
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
    • 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
    • F01N3/24—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 constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2807—Metal other than sintered metal
    • F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
    • 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
    • F01N3/24—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 constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2842—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for monolithic supports, e.g. of honeycomb type
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/30—Honeycomb supports characterised by their structural details
    • F01N2330/44—Honeycomb supports characterised by their structural details made of stacks of sheets, plates or foils that are folded in S-form
    • 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

Definitions

  • the subject matter of the invention relates to a device for the catalytic conversion of at least one component of an exhaust gas, in particular an exhaust gas of an internal combustion engine, with the features of the preamble of claim 1.
  • WO 92/18758 discloses a device for the catalytic conversion of at least one component of an exhaust gas, in particular an exhaust gas of an internal combustion engine.
  • the device comprises a metallic carrier body and a jacket.
  • the carrier body is formed from several layers of corrugated or smooth and corrugated sheets. It has at least one outer layer formed by overlapping smooth sheet metal sections.
  • the Rushkö ⁇ er is surrounded by the jacket and connected to it.
  • the connection of the carrier body to the jacket is carried out by at least one weld seam.
  • the weld seam is preferably produced by laser welding.
  • devices for catalytic conversion of at least one component of an exhaust gas are known, in which the carrier body is soldered to the jacket.
  • the carrier body is designed as a monolithic body.
  • the sheet metal layers are at least partially soldered to one another.
  • the formation of the soldered connection or connections between the sheet metal layers and between the carrier body and the jacket is preferably carried out in a single soldering process.
  • Methods for soldering a device containing a carrier body and a jacket are known for example from WO 89/1 1938 and DE 29 24 592 AI.
  • At least one sheet-metal layer of the carrier body has at least one smooth section which extends from at least one end face over part of the axial length of the carrier body and at least partially surrounds the carrier body.
  • the smooth section forms a layer on the circumference of the carrier body, which lies against the jacket. This ensures that no solder gets between the outer layer and the jacket tube, regardless of the soldering process. The solder can therefore be applied, as is known from the prior art.
  • the connection of the carrier body to the jacket takes place over part of the axial length of the jacket, the smooth section extending in the axial direction of the carrier body only as far as the connection region between the carrier body and the jacket.
  • the present invention is based on the object of developing the known device for the catalytic conversion of at least one component of an exhaust gas in such a way that a load on the carrier body is reduced, in particular due to tensile stresses.
  • the device according to the invention for the catalytic conversion of at least one component of an exhaust gas, in particular an exhaust gas of an internal combustion engine has a metallic support body which is formed from several layers of corrugated or smooth and corrugated sheets.
  • the carrier body is arranged in a jacket which at least partially surrounds the carrier body and is connected to it.
  • the carrier body has at least one outer layer which is formed by overlapping smooth sheet metal sections.
  • the device according to the invention is characterized in that at least two layers are provided which are essentially diametrically opposed. The layers each form connection-free areas with the jacket.
  • This inventive design of the device ensures that the load on the device is reduced.
  • the occurrence of tensile stresses in the radial direction, if not completely, is at least reduced to such an extent that failure of the carrier body is avoided, in particular under thermal stress with high and rapid temperature changes.
  • the radial tensile stresses are avoided in that the carrier body is only partially connected to the jacket
  • connection areas lie between the connection-free areas.
  • the angle enclosed by the respective layer in the circumferential direction of the carrier body is preferably adapted to a load situation. It is proposed that the included angle can also be over 180 ° if the load on the carrier body also contains high vibrations. At high thermal stresses, especially thermal shock in the radial direction, small angles are preferred.
  • the manufacture of a device according to the invention can be simplified in that the angles of the two layers are essentially the same. As a result, the carrier body has no preferred orientation in the jacket.
  • the layers be formed adjacent to the respective end face of the carrier body.
  • the length of the respective layer be less than half the total length of the carrier body. This has the advantage that the Wennkö ⁇ er is given a large compensation distance within the jacket tube.
  • the lengths of the layers are preferably the same. This has the advantage that the Rheingro ⁇ er can be arranged in the jacket tube regardless of direction.
  • the sheet metal sections is formed by end sections of at least a part of the sheets, preferably the smooth sheets.
  • the end sections are formed in one piece with the metal sheets.
  • at least some of the sheet metal sections can be formed by sheet metal strips, a sheet metal strip being arranged in each case between two adjacent sheets. This embodiment has the advantage that the cutting of the sheets is simplified.
  • FIG. 5 shows a second exemplary embodiment of a stack of sheet metal layers
  • FIG. 6 schematically shows a third exemplary embodiment of a stack of
  • FIG. 7 shows a smooth sheet metal of a stack according to FIG. 6.
  • the device shows a device for the catalytic conversion of at least one component of an exhaust gas, in particular an exhaust gas of an internal combustion engine.
  • the device has a metallic carrier body 1.
  • the carrier body is formed in the exemplary embodiment shown from several layers of corrugated 3 and smooth 4 sheets. The sheets are bent in an S-shape. Other configurations of the carrier body 1 are possible.
  • the Rushkö ⁇ er 1 is arranged in a jacket 2. This completely encloses the carrier body in the exemplary embodiment shown, as is shown in particular in connection with FIG. 2.
  • the Rushkö ⁇ er 1 is connected to the jacket 2, in particular soldered.
  • the jacket 2 is preferably tubular.
  • Fig. 2 shows that the Samgro ⁇ er 1 has two outer layers 6, 7.
  • Each outer layer 6, 7 is formed by overlapping smooth sheet metal sections 5.
  • the two layers 6, 7 are essentially diametrically opposed.
  • the layers are arranged adjacent to the respective end faces 10, 1 1 of the carrier body 1.
  • Fig. 2 shows that the length 1 of the respective layer 6, 7 is less than half the total length L of the carrier body.
  • the lengths 1 of the two layers 6, 7 are preferably the same.
  • the respective layer 6, 7 is formed by smooth, overlapping sheet metal sections 5.
  • the angle ⁇ viewed in the circumferential direction of the carrier body 1 by the respective layer 6, 7, is preferably approximately 180 °.
  • the angles ⁇ are the same in the exemplary embodiment shown. This is not absolutely necessary.
  • the angle ⁇ can also change in the axial direction of the carrier body.
  • the outer layers 6, 7 prevent 1 solder from getting between the metal sheets and the jacket when the face of the carrier body is soldered, so that no connection is formed between the carrier body 1 and the jacket 2 in the area of the layers 6, 7. Where the carrier body 1 has no outer layer, a connection is created between the jacket 2 and the carrier body 1.
  • the connection area between the carrier body 1 and jacket 2 is provided with the reference symbols 8, 9.
  • the connection areas 8, 9 are also diametrically opposite due to the configuration of the carrier body with its two layers 6, 7.
  • the carrier body has connection-free areas, a reduction in the radial and axial tensile stresses acting on the body can be reduced. In particular, the stresses are reduced by the corrugated sheets 3.
  • Fig. 3 shows an enlarged section of the Susco ⁇ ers 1 with an outer layer 6, which rests on the jacket 2.
  • both the corrugated 3 and the smooth 4 sheets have smooth sheet metal sections 5 which overlap one another and which form the outer layer 6.
  • FIG. 4 and FIG. 5 show exemplary embodiments of sheet metal stacks which are suitable for forming a carrier body.
  • 4 shows that only the smooth sheet metal 4 has smooth sheet metal sections 5.
  • the corrugated sheets 3 have no sheet sections 5.
  • the smooth sheet 4 and the smooth sheet sections 5 are integrally formed. From Fig. 4 it can be seen that the sheet metal sections 5 are formed diametrically opposite.
  • Sheet metal sections 5 are formed by sheet metal strips which are inserted between the adjacent sheets 3, 4.
  • the sheet metal sections can also be connected to the smooth sheet 4 or to the corrugated sheet 3.
  • the connection can be an adhesive connection, for example.
  • FIG. 6 shows a stack of sheets 3, 4.
  • a smooth sheet 4 is arranged between two adjacent corrugated sheets 3.
  • the first and the last layer of the stack can also be formed by a smooth sheet 4, as shown in FIG. 6.
  • the corrugated sheets 3 have a substantially rectangular cut.
  • the smooth sheets 4 are designed in the form of a parallelogram. They each have opposite sheet metal sections 12, 13 which protrude laterally over the corrugated sheets 3. These sheet metal sections 12, 13 overlap when the stack is intertwined in an S-shape.
  • Sheet metal section 7 layer, 9 connection area 0, 1 1 end face 2, 13 sheet metal section

Landscapes

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

Abstract

Pour assurer la conversion catalytique d'au moins un constituant de gaz d'échappement, notamment de gaz d'échappement provenant d'un moteur à combustion interne, il est prévu un dispositif comportant un corps support (1) métallique, disposé dans une enveloppe (2). Ce corps support comporte deux couches (6, 7) se présentant de manière diamétralement opposée. Ces couches (6, 7) forment conjointement avec l'enveloppe (2) des zones dans chaque cas sans raccordement.
PCT/EP2000/005123 1999-06-21 2000-06-05 Dispositif de conversion catalytique, muni d'un corps support lie par endroits a une enveloppe WO2000079109A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2001505438A JP2003502569A (ja) 1999-06-21 2000-06-05 ハウジングに結合された触媒担体を備える触媒変換装置
EP00938753A EP1192338A1 (fr) 1999-06-21 2000-06-05 Dispositif de conversion catalytique, muni d'un corps support lie par endroits a une enveloppe
US10/026,242 US20020182126A1 (en) 1999-06-21 2001-12-21 Device for catalytic conversion having a support body which is attached to a casing in certain areas

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19928237.4 1999-06-21
DE19928237A DE19928237A1 (de) 1999-06-21 1999-06-21 Einrichtung zur katalytischen Umsetzung mit einem bereichsweise an einen Mantel angebundenen Trägerkörper

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/026,242 Continuation US20020182126A1 (en) 1999-06-21 2001-12-21 Device for catalytic conversion having a support body which is attached to a casing in certain areas

Publications (1)

Publication Number Publication Date
WO2000079109A1 true WO2000079109A1 (fr) 2000-12-28

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ID=7911927

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Application Number Title Priority Date Filing Date
PCT/EP2000/005123 WO2000079109A1 (fr) 1999-06-21 2000-06-05 Dispositif de conversion catalytique, muni d'un corps support lie par endroits a une enveloppe

Country Status (5)

Country Link
US (1) US20020182126A1 (fr)
EP (1) EP1192338A1 (fr)
JP (1) JP2003502569A (fr)
DE (1) DE19928237A1 (fr)
WO (1) WO2000079109A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10328812A1 (de) * 2003-06-20 2005-01-20 Volkswagen Ag Abgaskatalysator und Verfahren zu seiner Herstellung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2924592A1 (de) 1979-06-19 1981-01-15 Sueddeutsche Kuehler Behr Verfahren zum herstellen einer traegermatrix fuer einen katalytischen reaktor zur abgasreinigung bei brennkraftmaschinen von kraftfahrzeugen
WO1989011938A1 (fr) 1988-05-31 1989-12-14 Interatom Gmbh Procede et dispositif d'encollage et de brasage du support metallique d'un catalyseur
EP0486276A1 (fr) * 1990-11-13 1992-05-20 Nippon Steel Corporation Support pour un catalyseur pour la purification des gaz d'échappement d'une automobile
WO1992018758A1 (fr) 1991-04-16 1992-10-29 Emitec Gesellschaft Für Emissionstechnologie Mbh Dispositif pour la decontamination catalytique de gaz d'echappement
DE4215986A1 (de) * 1992-05-14 1993-11-18 Emitec Emissionstechnologie Vorrichtung zur katalytischen Abgasreinigung
US5403558A (en) * 1988-10-04 1995-04-04 Nippon Steel Corporation Heat and fatigue resistant metallic carrier for automobile exhaust gas-purifying catalyst
WO1996026805A1 (fr) 1995-03-02 1996-09-06 Emitec Gesellschaft Für Emissionstechnologie Mbh Corps a nid d'abeilles rattache uniquement partiellement a un tube de protection

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2010201B3 (es) * 1986-05-12 1989-11-01 Interatom Ges Mit Beschrankter Haftung Cuerpo alveolado, especialmente cuerpo portante de catalizador, con capas de chapa metalica entrelazadas en sentidos opuestos y procedimiento para su fabricacion.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2924592A1 (de) 1979-06-19 1981-01-15 Sueddeutsche Kuehler Behr Verfahren zum herstellen einer traegermatrix fuer einen katalytischen reaktor zur abgasreinigung bei brennkraftmaschinen von kraftfahrzeugen
WO1989011938A1 (fr) 1988-05-31 1989-12-14 Interatom Gmbh Procede et dispositif d'encollage et de brasage du support metallique d'un catalyseur
US5403558A (en) * 1988-10-04 1995-04-04 Nippon Steel Corporation Heat and fatigue resistant metallic carrier for automobile exhaust gas-purifying catalyst
EP0486276A1 (fr) * 1990-11-13 1992-05-20 Nippon Steel Corporation Support pour un catalyseur pour la purification des gaz d'échappement d'une automobile
WO1992018758A1 (fr) 1991-04-16 1992-10-29 Emitec Gesellschaft Für Emissionstechnologie Mbh Dispositif pour la decontamination catalytique de gaz d'echappement
DE4215986A1 (de) * 1992-05-14 1993-11-18 Emitec Emissionstechnologie Vorrichtung zur katalytischen Abgasreinigung
WO1996026805A1 (fr) 1995-03-02 1996-09-06 Emitec Gesellschaft Für Emissionstechnologie Mbh Corps a nid d'abeilles rattache uniquement partiellement a un tube de protection

Also Published As

Publication number Publication date
DE19928237A1 (de) 2000-12-28
EP1192338A1 (fr) 2002-04-03
US20020182126A1 (en) 2002-12-05
JP2003502569A (ja) 2003-01-21

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