GB2066692A - Producing catalytic reactor matrix by sintering metal strips - Google Patents
Producing catalytic reactor matrix by sintering metal strips Download PDFInfo
- Publication number
- GB2066692A GB2066692A GB8037994A GB8037994A GB2066692A GB 2066692 A GB2066692 A GB 2066692A GB 8037994 A GB8037994 A GB 8037994A GB 8037994 A GB8037994 A GB 8037994A GB 2066692 A GB2066692 A GB 2066692A
- Authority
- GB
- United Kingdom
- Prior art keywords
- matrix
- metal strips
- catalytic reactor
- strips
- 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.)
- Granted
Links
- 239000011159 matrix material Substances 0.000 title claims abstract description 39
- 239000002184 metal Substances 0.000 title claims abstract description 15
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 12
- 238000005245 sintering Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 238000003475 lamination Methods 0.000 claims abstract description 3
- 238000004804 winding Methods 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000005219 brazing Methods 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Classifications
-
- B01J35/56—
-
- 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
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- 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
Abstract
A method of producing a catalytic reactor carrier matrix for purifying exhaust gases emitted by internal combustion engines, the matrix being in the form of a honeycomb body formed by winding or by utilising individual elements to provide a laminated honeycomb structure, the matrix being formed from high temperature-resistant, corrugated or folded metal strips (1) and smooth uncorrugated metal strips (2), the strips (1, 2) having a catalytically active coating, wherein the connection (3, 4) of the individual laminations or elements formed from the preshaped strips (1) and the smooth metal strips (2) is effected by sintering. <IMAGE>
Description
SPECIFICATION
Method of producing a catalytic reactor carrier mat
rix for purifying exhaust gases
The present invention relates to a method of pro
ducing a catalytic reactor carrier matrix for purifying
exhaust gases emitted by internal combustion
engines, the matrix being in the form of a wound or
laminated honeycomb body made of high
temperature-resistant, corrugated or folded metal
strips and smooth uncorrugated metal strips having
a catalytically active coating applied thereto.
Catalytic reactors and their methods of production
are already known and are often made of ceramic or
metallic materials. The advantage of metal reactors
over ceramic reactors is that they can be made ready
for use faster because of their more favourable sur
face area-weight ratio. One problem which arises in
known reactors occurs in the manner of connecting
the matrix body made from wound or coiled ele
ments or from individual elements laminated
together to obtain a stress-free and wear-resistant
structure. In order to provide the necessary perfor
mance level, which is high due to the vibrations,
oscillations and temperature changes acting on the
carrier matrix, the individual layers plies or laminae
of the matrix body have hitherto been connected
together by welding, soldering, brazing and even by
mechanical securing means.Such connections tend
to lack the necessary wear-resistance. Moreover,
due to the generally large number of connection
points, such methods tend to be complex and
expensive. The stresses occurring at the connection
points makes, in many cases, a thermal after
treatment step necessary.
If the connection of the components is effected by
diffusion welding, a preliminary connection step is
inevitable.
The present invention seeks to provide a method
which simplifies the manufacture of a reactor carrier
matrix and to improve its properties in such a man ner that the above-described disadvantages are
eliminated or at least minimised.
In accordance with the present invention, there is
provided a method of producing a catalytic reactor
carrier matrix for purifying exhaust gases emitted by
internal combustion engines, the matrix being in the
form of a honeycomb body formed by winding or by
utilising individually elements to provide a lami nated honeycomb structure, the matrix being
formed from high temperature-resistant, corrugated
or folded metal strips and smooth, uncorrugated metal strips, the strips having a catalytically active
coating and accordingly produced parts wherein the
connection of the individual laminations or elements formed from the pre-shaped and the smooth metal
strips is effected by sintering.
This method of producing a reactor carrier matrix
is economically advantageous compared with con
ventional welding or soldering techniques. To sinter
together the pre-shaped and unshaped smooth metal strips only one method step employing heat treatment is necessary, the temperature at which this treatment step is effected lying below the melting point of the materials to be connected. After sintering the individual laminae or layers together, there is substantially no stress at the connection points. No further thermal after-treatment is necessary. Due to the substantially flat connections produced by sintering, the carrier matrix is substantially more resistant to loads/stresses to which it is constantly subjected in use and hence has a longer working life.Sintering leads to connecting bridges being formed which have radiused transitions, so that notching effects are also reduced.
The honeycomb-body matrix may be sintered to an external surround member. If the reactor carrier matrix is of cylindrical shape, it can be welded into an exhaust gas system if the surround member is in the form of a powder-metallurgically produced housing, the housing being sintered to the matrix. The housing may also be subjected to shrinkage to increase the strength of the matrix. This can be achieved by suitably selecting the materials from which the matrix is made or by suitably adjusting the variable parameters of the sintering step. The invention also relates to a matrix produced by such a method.The invention will be further described, by way of example, with reference to the accompanying drawings, in which:
Fig. 1 shows a segmental section through one embodiment of a wound catalytic reactor carrier matrix in accordance with the present invention;
Fig. 2 shows a fragmentary section through a second embodiment of a catalytic reactor carrier matrix having a laminated honeycomb-type structure.
Fig. 3 shows a fragmentary section, on an enlarged scale relative to Figs. 1 and 2, of a further embodiment of a carrier matrix;
Fig. 4 shows a wound carrier matrix having a sleeve surround produced, for example, powder metallurgically;
Fig. 5 shows a wound carrier matrix having a common sintered ring or strip surround, and
Fig. 6 shows a wound carrier matrix having a housing sintered thereto, located to an exhaust pipe.
A reactor carrier matrix in accordance with the present invention may be in the form of a wound or
laminated honeycomb-type body and may be used, in a known manner, in suitable exhaust arrangements. The honeycomb body is made of a preshaped, corrugated or folded strip 1 and an uncorrugated smooth strip 2, both made of a suitable
metallic material. The metal strips 1 or 2, or the honeycomb structure formed therefrom, are provided with a catalytically active coating.
By utilising a sintering process, a stressfree
honeycomb-type structure is produced which has
sinter bridges 3 formed at the points of connection of the strips 1 and 2. A notching effect is avoided by
providing radiused transitions 4 between the points
of connection between the strips 1 and 2 and/or the
bridges 3 and/or an external support member 8. If it
is desired to produce a cylindrical shape, such as the
carrier matrix shown in Fig. 4, a powder metallurgi
cally produced housing 6 may be used. The housing
6 may, as shown in Fig. 5, be replaced by rings or
strips 7 sintered to the circular or polygonal
honeycomb-shaped matrix. In Fig. 6, there is shown an exhaust pipe 9. To the interior surface of this pipe 9, the external support member 8 of the matrix is affixed.
Claims (7)
1. A method of producing a catalytic reactor carrier matrix for purifying exhaust gases emitted by internal combustion engines, the matrix being in the form of a honeycomb body formed by winding or by utilising individually elements to provide a laminated honeycomb structure, the matrix being formed from high temperature-resistant, corrugated or folded metal strips and smooth, uncorrugated metal strips, the strips having a catalytically active coating and accordingly produced partswherein the connection of the individual laminations or elements formed from the pre-shaped and the smooth metal strips is effected by sintering.
2. A method as claimed in claim 1, wherein the honeycomb body matrix is sintered to an external surround member.
3. A method as claimed in claim 2, wherein the surround member is a powder metallurgically produced housing.
4. A method as claimed in claim 2 or 3, wherein the external surround member is subjected to shrinkage.
5. A method of producing a catalytic reactor carrier matrix as claimed in claim 1 substantially as hereinbefore described.
6. A catalytic reactor carrier matrix when produced by a method as claimed in any one of claims 1 to 5.
7. A catalytic reactor carrier matrix as claimed in claim 6 constructed and arranged to operate substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2947694A DE2947694C2 (en) | 1979-11-27 | 1979-11-27 | Catalytic carrier matrix for cleaning internal combustion engine exhaust gases |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2066692A true GB2066692A (en) | 1981-07-15 |
| GB2066692B GB2066692B (en) | 1984-01-18 |
Family
ID=6086970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8037994A Expired GB2066692B (en) | 1979-11-27 | 1980-11-27 | Producing catalytic reactor matrix by sintering metal strips |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5685514A (en) |
| DE (1) | DE2947694C2 (en) |
| FR (1) | FR2470246B1 (en) |
| GB (1) | GB2066692B (en) |
| IT (1) | IT1209429B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2206130A (en) * | 1987-05-07 | 1988-12-29 | Usui Kokusai Sangyo Kk | A method of manufacturing a metallic carrier base material for supporting a catalyst for exhaust gas purification |
| GB2250215A (en) * | 1990-11-29 | 1992-06-03 | Rover Group | A catalytic converter |
| US5395599A (en) * | 1991-08-01 | 1995-03-07 | Nippon Yakin Kogyo Co., Ltd. | Catalyst-carrying metallic carrier and production method thereof |
| US9446374B2 (en) | 2012-03-14 | 2016-09-20 | Alfa Laval Corporate Ab | Residence time plate |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3602134A1 (en) * | 1986-01-24 | 1987-07-30 | Daimler Benz Ag | DEVICE FOR CLEANING ENGINE EXHAUST GASES WITH A METAL MATRIX CATALYST SOLELED IN A HOUSING |
| US4752599A (en) * | 1986-03-31 | 1988-06-21 | Nippon Steel Corporation | Method for producing a base of a catalyst carrier for automobile exhaust gas-purification |
| DE3622115C1 (en) * | 1986-07-02 | 1987-09-03 | Daimler Benz Ag | Metallic carrier for catalytic converters of Otto engines |
| JPH0631136Y2 (en) * | 1987-05-30 | 1994-08-22 | カルソニック株式会社 | Metal catalyst converter |
| JPS63315151A (en) * | 1987-06-18 | 1988-12-22 | Yutaka Giken:Kk | Catalyst apparatus for car |
| DE3726073C1 (en) * | 1987-08-06 | 1988-07-14 | Thyssen Edelstahlwerke Ag | Process for the production of thin-walled semi-finished products and their uses |
| DE3726072A1 (en) * | 1987-08-06 | 1989-02-16 | Thyssen Edelstahlwerke Ag | Soldering method |
| DE3726075C1 (en) * | 1987-08-06 | 1989-03-02 | Thyssen Edelstahlwerke Ag | Method of soldering steel parts and of producing catalyst supports, heat exchangers and soot filters |
| DE8811086U1 (en) * | 1988-09-01 | 1988-10-20 | Sueddeutsche Kuehlerfabrik Julius Fr. Behr Gmbh & Co Kg, 7000 Stuttgart, De | |
| WO1993002792A1 (en) * | 1991-08-01 | 1993-02-18 | Nippon Yakin Kogyo Co., Ltd. | Metal carrier for carrying catalyst and method of making said carrier |
| DE4142533A1 (en) * | 1991-12-21 | 1993-06-24 | Emitec Emissionstechnologie | METHOD FOR SOLDERING SUPPORTING BODIES OF EXHAUST GAS CATALYSTS |
| DE4230174C2 (en) * | 1992-09-09 | 1997-09-25 | Roth Technik Gmbh | catalyst |
| DE4244511C2 (en) * | 1992-12-30 | 2002-09-12 | Hermann Josef Gerstenmeier | Device for the filtering removal of soot particles |
| EP0659480A1 (en) * | 1993-12-27 | 1995-06-28 | SUT-SYSTEM- UND UMWELTTECHNIK GmbH | Metallic carrier with sintered cellular structure |
| US5648176A (en) * | 1994-02-08 | 1997-07-15 | Nippon Steel Corporation | Metallic honeycomb body for supporting catalyst for automobiles and process for producing the same |
| JP3704353B2 (en) * | 1994-09-13 | 2005-10-12 | 洋 師橋 | Rotary valve and material supply method using the rotary valve |
| DE4432730A1 (en) * | 1994-09-14 | 1996-03-21 | Emitec Emissionstechnologie | Process for the production of a metallic structure |
| DE19530871A1 (en) * | 1995-08-22 | 1997-02-27 | Emitec Emissionstechnologie | Method for producing a soldered honeycomb body using sheet metal constructed in layers |
| DE19943878A1 (en) | 1999-09-14 | 2001-03-22 | Emitec Emissionstechnologie | Process for producing a sintered honeycomb body |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2263554A1 (en) * | 1972-01-18 | 1974-07-04 | Feldmuehle Anlagen Prod | CATALYST CARRIER MADE OF SINTERED INORGANIC MATERIAL WITH OUTER SHEATH |
| FR2182614B1 (en) * | 1972-03-17 | 1978-05-05 | Louyot Comptoir Lyon Alemand | |
| JPS548202B2 (en) * | 1972-12-07 | 1979-04-13 | ||
| JPS4983683A (en) * | 1972-12-18 | 1974-08-12 | ||
| DE2300982A1 (en) * | 1973-01-10 | 1974-07-11 | Volkswagenwerk Ag | DEVICE FOR SUPPORTING A CERAMIC BODY |
| DE2302746A1 (en) * | 1973-01-20 | 1974-07-25 | Sueddeutsche Kuehler Behr | CARRIER MATRIX FOR A CATALYTIC REACTOR FOR EXHAUST GAS CLEANING IN COMBUSTION MACHINES, ESPEC. GASOLINE ENGINES OF MOTOR VEHICLES AND A MANUFACTURING PROCESS |
| US3928235A (en) * | 1973-11-12 | 1975-12-23 | Paul Douglas Goodell | Catalyst for purification of waste streams |
| JPS5418232B2 (en) * | 1974-01-22 | 1979-07-05 | ||
| DE2745188C3 (en) * | 1977-10-07 | 1980-05-08 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Shaped catalyst, process for its manufacture and use |
-
1979
- 1979-11-27 DE DE2947694A patent/DE2947694C2/en not_active Expired
-
1980
- 1980-11-26 FR FR8025486A patent/FR2470246B1/en not_active Expired
- 1980-11-26 IT IT8026226A patent/IT1209429B/en active
- 1980-11-26 JP JP16540780A patent/JPS5685514A/en active Granted
- 1980-11-27 GB GB8037994A patent/GB2066692B/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2206130A (en) * | 1987-05-07 | 1988-12-29 | Usui Kokusai Sangyo Kk | A method of manufacturing a metallic carrier base material for supporting a catalyst for exhaust gas purification |
| GB2206130B (en) * | 1987-05-07 | 1991-08-14 | Usui Kokusai Sangyo Kk | A method of manufacturing a metallic carrier base material for supporting a catalyst for exhaust gas purification |
| GB2250215A (en) * | 1990-11-29 | 1992-06-03 | Rover Group | A catalytic converter |
| US5395599A (en) * | 1991-08-01 | 1995-03-07 | Nippon Yakin Kogyo Co., Ltd. | Catalyst-carrying metallic carrier and production method thereof |
| US9446374B2 (en) | 2012-03-14 | 2016-09-20 | Alfa Laval Corporate Ab | Residence time plate |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2470246B1 (en) | 1987-07-03 |
| JPS5685514A (en) | 1981-07-11 |
| FR2470246A1 (en) | 1981-05-29 |
| IT8026226A0 (en) | 1980-11-26 |
| DE2947694C2 (en) | 1985-08-01 |
| GB2066692B (en) | 1984-01-18 |
| JPH048107B2 (en) | 1992-02-14 |
| DE2947694A1 (en) | 1981-09-03 |
| IT1209429B (en) | 1989-07-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19991127 |