US4041099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paraffin dehydrogenation using platinum-tin promoted zinc aluminate catalyst and silica-free particles
Assignee: Phillips Petroleum Co
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Filing: 1976-09-03
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Granted: 1977-08-09
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Expires: 1996-09-03
Abstract
Abstract A method and an improved platinum-tin promoted zinc aluminate catalyst reactor for dehydrogenation of a paraffinic hydrocarbon feed stream as first and second layers of silica-free particles, each positioned in contact with and on opposed surfaces of the catalyst across the direction of feed stream flow through the reactor for preventing the poisoning of said catalyst.
Inventors
- 👤 Thomas Hutson, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:26
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; C; C07; C07C; C07C5/00; C07C5/32; C07C5/321; C07C5/324; C07C5/325; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00389; B01J2208/00407; B01J2208/00477; B01J2208/00495; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
77 words
A process for dehydrogenating a hydrocarbon feedstock comprising alkanes, cycloalkanes, arylalkanes or mixtures thereof in which the feedstock is dehydrogenated in contact with a layer of platinum-tin promoted zinc aluminate catalyst, said process comprising maintaining a first and a second layer of silica-free particles with the catalyst layer arranged between these layers of silica-free particles and passing the feed stream through one of said first and second layers of silica-free particles and thereafter through the catalyst layer.
Claim 2
Dependent Claim
77 words
A process for dehydrogenating a hydrocarbon feedstock comprising alkanes, cycloalkanes, arylalkanes or mixtures thereof in which the feedstock is dehydrogenated in contact with a layer of platinum-tin promoted zinc aluminate catalyst, said process comprising maintaining a first and a second layer of silica-free particles with the catalyst layer arranged between these layers of silica-free particles and passing the feed stream through one of said first and second layers of silica-free particles and thereafter through the catalyst layer.
Claim 3
Dependent Claim
59 words
A process in accordance with claim 1 wherein said feed stream is passed into a reactor having inlet and outlet ends and wherein at least partially dehydrogenated feedstock is withdrawn from the outlet end of said reactor and wherein said first and second layers of silica-free particles separate said catalyst from the inlet and outlet ends of the reactor.
Claim 4
Dependent Claim
23 words
A process in accordance with claim 1 wherein said feed stream is passed through first and second layers of silica-free stainless steel particles.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |