US4142864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic apparatus
Assignee: BASF Catalysts LLC
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Filing: 1977-05-31
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Granted: 1979-03-06
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Expires: 1997-05-31
Abstract
Abstract A catalytic, gas treating apparatus in which a unitary ceramic catalytic element having gas flow passages therethrough, is positioned within a metallic casing in a manner providing a space between the casing and the catalytic element. A resilient member which is compressible both radially and longitudinally is positioned around the catalytic element in said space to resiliently hold the catalytic element. A plug member is positioned at least partially in said space, and, for instance, around the catalytic element at opposite end portions of the catalytic element, in a manner which longitudinally compresses said resilient member to a substantial extent to increase the holding force exerted on the catalytic element by the resilient member and thereby inhibit axial movement of the catalytic element during use. The device avoids the necessity of providing end flanges extending from the casing and overlapping the periphery of the end faces of the catalytic element for the purpose of minimizing axial movement of the catalytic element, and, as a result, essentially all of the gas flow passages remain available to the flow of the gas to be treated and there is maximum catalyst utilization.
Inventors
- 👤 Victor Rosynsky
- 👤 Alfred Stawsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:34
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/9445; B01D53/9454; F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2839; F01N3/2853; F01N3/2864; F01N3/2867; F01N3/2875; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
205 words
An apparatus for treating gases comprising: a. a metallic casing defining an enclosure and having a gas inlet and a gas outlet that communicate with said enclosure; b. a catalytic element of lesser dimension than said enclosure and positioned in the casing in a manner providing a space extending around the catalytic element between the catalytic element and the inner surface of the casing, said catalytic element comprising a unitary skeletal ceramic structure having gas flow passages therethrough; c. a resilient, flexible member snugly holding said catalytic element and positioned under compression radially between the catalytic element and the inner surface of the casing, said resilient member being compressible longitudinally with respect to said catalytic element; and d. at least one plug member at least partially within said space between the inner surface of the casing and the periphery of the catalytic element, said plug member being positioned within said space to longitudinally compress said compressed resilient flexible member to provide a quantity of solid material per unit volume of said space occupied by said resilient member which is at least about 20% greater relative to said quantity before said longitudinal compression, and sufficiently to hold said catalytic element against axial movement during its use.
Claim 2
Independent Claim
205 words
An apparatus for treating gases comprising: a. a metallic casing defining an enclosure and having a gas inlet and a gas outlet that communicate with said enclosure; b. a catalytic element of lesser dimension than said enclosure and positioned in the casing in a manner providing a space extending around the catalytic element between the catalytic element and the inner surface of the casing, said catalytic element comprising a unitary skeletal ceramic structure having gas flow passages therethrough; c. a resilient, flexible member snugly holding said catalytic element and positioned under compression radially between the catalytic element and the inner surface of the casing, said resilient member being compressible longitudinally with respect to said catalytic element; and d. at least one plug member at least partially within said space between the inner surface of the casing and the periphery of the catalytic element, said plug member being positioned within said space to longitudinally compress said compressed resilient flexible member to provide a quantity of solid material per unit volume of said space occupied by said resilient member which is at least about 20% greater relative to said quantity before said longitudinal compression, and sufficiently to hold said catalytic element against axial movement during its use.
Claim 3
Dependent Claim
11 words
The apparatus of claim 1 wherein said plug is solid metal.
Claim 4
Dependent Claim
21 words
The apparatus of claim 1 wherein said plug is tapered with the smaller end of the plug projecting into said space.
Claim 5
Dependent Claim
26 words
The apparatus of claim 1 wherein the plug has a U-shaped cross-section with the open end of the U-shape facing longitudinally away from said catalytic element.
Claim 6
Dependent Claim
15 words
The apparatus of claim 1 wherein the plug comprises a thin-walled hollow, sealed, gas-filled member.
Claim 7
Dependent Claim
31 words
The apparatus of claim 1 wherein said longitudinal compression increases the quantity of solid material per unit volume of said space occupied by said resilient member by at least about 40%.
Claim 8
Dependent Claim
14 words
The apparatus of claim 1 wherein said resilient member comprises a ceramic fiber material.
Claim 9
Dependent Claim
12 words
The apparatus of claim 7 wherein the plug comprises compressed wire mesh.
Claim 10
Dependent Claim
13 words
The apparatus of claim 8 wherein the plug is jacketed with metal foil.
Claim 11
Dependent Claim
46 words
The apparatus of claim 7 further comprising a retaining means affixed to said casing and adapted to hold said plug from movement with respect to said casing, the inner surface of said retaining means being radially outside of said gas flow passages of said catalytic element.
Claim 12
Independent Claim
216 words
An apparatus useful for treating gases comprising: a. a metallic casing defining an enclosure and having a gas inlet and a gas outlet that communicate with said enclosure; b. a catalytic element of lesser dimension than said enclosure and positioned in the casing in a manner providing a space extending around the catalytic element between the catalytic element and the inner surface of the casing, said catalytic element comprising a unitary skeletal ceramic structure having gas flow passages therethrough; c. a resilient, flexible member snugly holding said catalytic element and positioned under compression radially between the catalytic element and the inner surface of the casing, said resilient member being compressible longitudinally with respect to said catalytic element; and d. a plug member at each of the opposite end portions of the catalytic element and at least partially within said space between the inner surface of the casing and the periphery of the catalytic element, said plug members being positioned within said space to longitudinally compress said compressed resilient flexible member to provide a quantity of solid material per unit volume of said space occupied by said resilient member which is at least about 20% greater relative to said quantity before said longitudinal compression, and sufficiently to hold said catalytic element against axial movement during its use.
Claim 13
Independent Claim
216 words
An apparatus useful for treating gases comprising: a. a metallic casing defining an enclosure and having a gas inlet and a gas outlet that communicate with said enclosure; b. a catalytic element of lesser dimension than said enclosure and positioned in the casing in a manner providing a space extending around the catalytic element between the catalytic element and the inner surface of the casing, said catalytic element comprising a unitary skeletal ceramic structure having gas flow passages therethrough; c. a resilient, flexible member snugly holding said catalytic element and positioned under compression radially between the catalytic element and the inner surface of the casing, said resilient member being compressible longitudinally with respect to said catalytic element; and d. a plug member at each of the opposite end portions of the catalytic element and at least partially within said space between the inner surface of the casing and the periphery of the catalytic element, said plug members being positioned within said space to longitudinally compress said compressed resilient flexible member to provide a quantity of solid material per unit volume of said space occupied by said resilient member which is at least about 20% greater relative to said quantity before said longitudinal compression, and sufficiently to hold said catalytic element against axial movement during its use.
Claim 14
Dependent Claim
14 words
The apparatus of claim 11 wherein said resilient member comprises a ceramic fiber material.
Claim 15
Dependent Claim
43 words
The apparatus of claim 11 further comprising retaining means affixed to said casing and adapted to hold said plugs from movement relative to the casing, the inner surface of said means being radically outside of said gas flow passages of said catalytic element.
Claim 16
Dependent Claim
26 words
The apparatus of claim 11 wherein said plugs have a U-shaped cross-section with the open end of the U-shape facing longitudinally away from said catalytic element.
Claim 17
Dependent Claim
14 words
The apparatus of claim 11 wherein the plugs comprise thin-walled, hollow, sealed, gas-filled members.
Claim 18
Dependent Claim
11 words
The apparatus of claim 11 wherein said plugs are solid metal.
Claim 19
Dependent Claim
12 words
The apparatus of claim 11 wherein said plugs comprise compressed wire mesh.
Claim 20
Dependent Claim
17 words
The apparatus of claim 18 wherein at least one of said plugs is jacketed with metal foil.
Claim 21
Dependent Claim
21 words
The apparatus of claim 11 wherein said plugs are tapered with the smaller end of the plugs projecting into said space.
Claim 22
Dependent Claim
31 words
The apparatus of claim 19 wherein said longitudinal compression increases the quantity of solid material per unit volume of said space occupied by said resilient member by at least about 40%.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-05 | 1982-09-04 | 1983-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-05 | 1986-09-04 | 1987-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-05 | 1990-09-04 | 1991-03-06 | $7700.00 | Window Closed / Lapsed |