EP0186801B1 - Matrice porteuse en particulier pour un réacteur catalytique pour la purification des gaz d'échappement - Google Patents

Matrice porteuse en particulier pour un réacteur catalytique pour la purification des gaz d'échappement Download PDF

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Publication number
EP0186801B1
EP0186801B1 EP85115376A EP85115376A EP0186801B1 EP 0186801 B1 EP0186801 B1 EP 0186801B1 EP 85115376 A EP85115376 A EP 85115376A EP 85115376 A EP85115376 A EP 85115376A EP 0186801 B1 EP0186801 B1 EP 0186801B1
Authority
EP
European Patent Office
Prior art keywords
corrugated
corrugation
smooth
matrix
carrier matrix
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
Application number
EP85115376A
Other languages
German (de)
English (en)
Other versions
EP0186801A2 (fr
EP0186801A3 (en
Inventor
Manfred Dr. Nonnenmann
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.)
Vitesco Technologies Lohmar Verwaltungs GmbH
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Priority to AT85115376T priority Critical patent/ATE44305T1/de
Publication of EP0186801A2 publication Critical patent/EP0186801A2/fr
Publication of EP0186801A3 publication Critical patent/EP0186801A3/de
Application granted granted Critical
Publication of EP0186801B1 publication Critical patent/EP0186801B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • F01N3/2803—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
    • F01N3/2821—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates the support being provided with means to enhance the mixing process inside the converter, e.g. sheets, plates or foils with protrusions or projections to create turbulence
    • 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
    • F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
    • 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
    • F01N2330/32—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils
    • F01N2330/322—Corrugations of trapezoidal 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12333—Helical or with helical component
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/1241—Nonplanar uniform thickness or nonlinear uniform diameter [e.g., L-shape]

Definitions

  • the invention relates to a carrier matrix according to the preamble of patent claim 1.
  • Catalyst bodies produced in corrugated strips provide an increase in the turbulence within the individual flow channels delimited by the smooth metal foils, but that in the radial direction almost no gas equalization can follow, but this is also desirable with regard to the utilization of the catalyst material. It has therefore already been proposed (DE-C-33 47 086.3) to form metal foils to be stacked directly in the manner of turbulence plates, as are used in heat exchangers. Such types have certain disadvantages in terms of manufacturing technology.
  • the invention is therefore based on the object of avoiding these disadvantages and of creating a support matrix of the type mentioned at the outset which permits good utilization of the catalyst material with a simple production method.
  • the characterizing features of claim 1 are provided in a carrier body of the type mentioned.
  • the new foils can be stacked on top of one another in a simple manner without having to take into account the shape of the corrugations or the profile of the corrugations.
  • the new film is excellently suited for the production of wound carrier matrices because the continuous smooth metal strip can absorb the tensile stress used during winding, and the corrugated strip that is also continuously adjacent to the smooth metal strip with offset corrugated sections because of its continuous arrangement over the entire width of the smooth strip but also cannot be deformed and undesirably deformed during the winding process.
  • Corrugated metal strips of the type listed in claim 1 have a high intrinsic stability.
  • the corrugated sections have corrugations with a trapezoidal cross section, which is in each case such that the smaller of the two parallel sides of the trapezoid each form the sides closed by the corrugated strip and the larger sides form the open sides of the corrugated strip.
  • This trapezoidal cross section results in an extremely good stability of the corrugated tape, which is important when winding the matrix.
  • a smooth metal foil 1 is shown, which consists for example of a thin steel sheet.
  • This metal foil 1 is provided at certain intervals with openings 2, which can be stamped, for example.
  • the openings 2 shown are rectangular. Of course, differently shaped openings, for example round openings, can also be provided.
  • a metal strip Adjacent to the smooth metal foil 1, a metal strip, for example made of the same material but formed as a corrugated strip 3, is provided, which also consists of a there is only one continuous sheet metal strip, which, however, has been passed, for example, through a pair of rollers provided with projections and recesses, so that the embossments and incisions occur which are clear in FIG. 1.
  • the corrugated strip 3 consists of a plurality of partial corrugated strips 3a, 3b, 3c etc. which are arranged one behind the other in the flow direction 4 and run transversely to the flow direction 4, and which are each designed identically to one another, but each about a quarter of the wavelength a transversely to Flow direction are offset from each other.
  • each corrugated tape 3 is enclosed on both sides after a winding process by a smooth tape 1, so that thereby the aforementioned closed flow channels 5 are formed, but from layer to layer or from winding to winding over the openings 2 are also interconnected.
  • the corrugated sections 3a, 3b, 3c which are firmly attached to one another, each have a trapezoidal cross-section, the smaller side 7 of the trapezoid each having the closed part of the corrugated strip and the larger side 8 of the two parallel sides of the trapezoid forms the open side of the corrugated tape.
  • This leads to the fact that the smooth band 1 and the corrugated band 3 are particularly well suited for the production of a carrier matrix by winding, as shown in FIG. 2.
  • a wound carrier matrix can be produced in a particularly simple manner with the two films shown in FIG. 1. It can then be soldered in a manner known per se and then coated with catalyst material. The wound foils are, likewise in a known manner, pushed into a tubular housing with a circular or oval cross section before the soldering process.
  • the film shown in FIG. 1 is stacked on top of one another, it is of course also possible to produce rectangular carrier bodies.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)
  • Exhaust Gas After Treatment (AREA)

Claims (3)

1. Matrice support, notamment pour un réacteur catalytique destiné à l'épuration des gaz d'échappement des moteurs à combustion interne, composée de feuilles métalliques lisses et ondulées qui sont adjacentes en alternance, qui sont enroulées, superposées en couches ou pliées et qui forment des canaux d'écoulement, caractérisée en ce que chaque onde formée par la feuille métallique ondulée d'une seule pièce (3) est composée de régions partielles d'ondes (3a, 3b, 3c) mutuellement adjacentes, les régions partielles d'ondes étant placées les unes à la suite des autres dans le sens de l'écoulement (4) mais étant disposées avec décalage dans la direction transversale, et en ce qu'une feuille métallique lisse (1) est appuyée sur les sommets (7) de chaque feuille métallique ondulée (3).
2. Matrice support selon la revendication 1, caractérisée en ce que la bande métallique lisse (1) est munie d'ouvertures (2).
3. Matrice support selon la revendication 1, caractérisée en ce que les segments partiels d'ondes (3a, 3b, 3c) présentent des ondulations à section en trapèze, les plus petits (7) des deux côtés parallèles (7, 8) du trapèze formant les côtés fermés par la bande ondulée tandis que les plus grands (8) forment les côtés ouverts du segment partiel d'onde (3a, 3b, 3c).
EP85115376A 1984-12-29 1985-12-04 Matrice porteuse en particulier pour un réacteur catalytique pour la purification des gaz d'échappement Expired EP0186801B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85115376T ATE44305T1 (de) 1984-12-29 1985-12-04 Traegermatrix, insbesondere fuer einen katalytischen reaktor zur abgasreinigung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19848438260U DE8438260U1 (de) 1984-12-29 1984-12-29 Traegermatrix, insbesondere fuer einen katalytischen reaktor zur abgasreinigung
DE8438260U 1984-12-29

Publications (3)

Publication Number Publication Date
EP0186801A2 EP0186801A2 (fr) 1986-07-09
EP0186801A3 EP0186801A3 (en) 1987-09-30
EP0186801B1 true EP0186801B1 (fr) 1989-06-28

Family

ID=6774271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115376A Expired EP0186801B1 (fr) 1984-12-29 1985-12-04 Matrice porteuse en particulier pour un réacteur catalytique pour la purification des gaz d'échappement

Country Status (5)

Country Link
US (1) US4665051A (fr)
EP (1) EP0186801B1 (fr)
JP (1) JPH0328913Y2 (fr)
AT (1) ATE44305T1 (fr)
DE (2) DE8438260U1 (fr)

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Also Published As

Publication number Publication date
ATE44305T1 (de) 1989-07-15
DE3571263D1 (en) 1989-08-03
US4665051A (en) 1987-05-12
EP0186801A2 (fr) 1986-07-09
EP0186801A3 (en) 1987-09-30
JPS61115139U (fr) 1986-07-21
JPH0328913Y2 (fr) 1991-06-20
DE8438260U1 (de) 1985-04-11

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