EP0559808B1
Expired / Lapsed
EP
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A catalyst structure having integral heat exchange (ii)
Assignee: Catalytica Combustion Systems Inc
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Filing: 1991-11-26
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Granted: 1997-01-29
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Expires: 2011-11-26
Abstract
Abstract This invention is a catalyst structure having integral heat exchange surfaces and a method for using the structure in highly exothermic processes, such as a combustion process, while maintaining the catalyst and the structure wall at a temperature below the adiabatic combustion temperature.
Inventors
- 👤 Ralph A. Dalla Betta
- 👤 Fabio H. Ribeiro
- 👤 Toru Shoji
- 👤 Kazunori Tsurumi
- 👤 Nobuyasu Ezawa
- 👤 Sarento G. Nickolas
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 22:44
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/06; B01J21/066; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/8621; B01D53/8625; B01D53/8628; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J23/44; B01J35/00; B01J35/50; B01J35/56; F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2807; F01N3/281; B01J21/063; F01N2330/00; F01N2330/02; F01N2330/30; F01N2330/32
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
70 words
A catalyst structure comprising a metallic catalyst support having a multitude of passageways adapted for the passage of combustible gas, the structure having interior surfaces where at least a portion but not all of the interior surfaces are coated with a catalytic material suitable for oxidizing the combustible gas, the interior surfaces coated with catalytic material being in heat exchange relationship with interior surfaces not coated with a catalytic material.
Claim 2
Dependent Claim
12 words
The catalyst structure of claim 1 where some passageways contain catalytic material.
Claim 3
Dependent Claim
14 words
The catalyst structure of claim 1 where all of the passageways contain catalytic material.
Claim 4
Dependent Claim
29 words
The catalyst structure of claims 1, 2 or 3 wherein the metallic catalyst support comprises aluminium, a high temperature metal alloy, stainless steel, or a ferrous alloy containing aluminium.
Claim 5
Dependent Claim
17 words
The catalyst structure of claim 4 wherein the metallic catalyst support comprises a ferrous alloy containing aluminium.
Claim 6
Dependent Claim
32 words
The catalyst structure of claim 5 wherein the metallic catalyst support additionally comprises a washcoat of zirconia, titania, alumina, silica, or refractory metal oxide on at least a portion of the support.
Claim 7
Dependent Claim
11 words
The catalyst structure of claim 6 where the washcoat comprises alumina.
Claim 8
Dependent Claim
11 words
The catalyst structure of claim 6 where the washcoat comprises zirconia.
Claim 9
Dependent Claim
22 words
The catalyst structure of claim 6 where the washcoat comprises a mixture of at least two of zirconia, titania, alumina and silica.
Claim 10
Dependent Claim
16 words
The catalyst structure of claim 9 where the washcoat comprises a mixture of zirconia and silica.
Claim 11
Dependent Claim
22 words
The catalyst structure of claim 5 or 6 where the catalytic material is one or more platinum group metals on the washcoat.
Claim 12
Dependent Claim
14 words
The catalyst structure of claim 6 or 7 where the catalytic material comprises platinum.
Claim 13
Dependent Claim
15 words
The catalyst structure of claim 6, 8 or 10 where the catalytic material comprises palladium.
Claim 14
Dependent Claim
14 words
The catalyst structure of claim 6 where the catalytic material comprises palladium and platinum.
Claim 15
Dependent Claim
20 words
The catalyst structure of claim 5 where the passageways containing catalyst are relatively larger than the passageways not containing catalyst.
Claim 16
Dependent Claim
20 words
The catalyst structure of claim 5 where the passageways containing catalyst are relatively smaller than the passageways not containing catalyst.
Claim 17
Dependent Claim
22 words
The catalyst structure of claim 5 where the passageways containing catalyst are relatively of equal size to the passageways not containing catalyst.
Claim 18
Dependent Claim
36 words
The catalyst structure of claim 15, 16 or 17 where the ratio of the open area of the passageways containing catalyst to the open area of the passageways not containing catalyst is between 1:20 and 20:1.
Claim 19
Dependent Claim
18 words
The catalyst structure of claim 5 where the metallic catalyst support comprises a spiral roll of corrugated sheet.
Claim 20
Dependent Claim
21 words
The catalyst structure of claim 5 where the catalyst support is a rolled spiral comprising corrugated sheet and a spacer sheet.
Claim 21
Dependent Claim
16 words
The catalyst structure of claim 5 where the metallic catalyst support is in a herringbone pattern.
Claim 22
Dependent Claim
24 words
The catalyst structure of claim 5 where the metallic catalyst support is assembled comprising generally parallel alternating layers of corrugated and flat spacer sheets.
References Cited (Backward Citations)
No citation records indexed.
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