US3812653A
Expired / Lapsed
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Process for reducing the arsenic content of gaseous hydrocarbon streams by use of supported copper or copper oxide
Assignee: Chevron USA Inc
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Filing: 1972-04-27
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Granted: 1974-05-28
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Expires: 1992-04-27
Abstract
Abstract A process for reducing the arsenic content of a gaseous hydrocarbon stream by contacting the stream with a sorbent comprising copper or an oxide of copper dispersed upon a supporting material.
Inventors
- 👤 F Massoth
- 👤 J Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:42
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; C; C07; C07C; C07C7/00; C07C7/148
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
25 words
A process as recited in claim 1 wherein said supporting material is a refractory metal oxide having a surface area of greater than 50 m2/g.
Claim 2
Dependent Claim
22 words
A process as recited in claim 2 wherein said hydrocarbons in said feedstream have from one to five carbon atoms per molecule.
Claim 3
Dependent Claim
22 words
A process as recited in claim 3 wherein said hydrocarbon feedstream includes olefins and water vapor and is substantially free of acetylenes.
Claim 4
Dependent Claim
22 words
A process as recited in claim 4 wherein said contacting takes place at a temperature in the range of 50*F. to 400*F.
Claim 5
Dependent Claim
74 words
A process for reducing the arsenic content of a gaseous hydrocarbon feedstream having greater than 20 ppb of arsenic to produce a product having less than 10 ppb of arsenic which comprises contacting said feedstream with a sorbent dispersed on a refractory metal oxide having a surface area of greater than 50 m2/g, said sorbent consisting essentially of copper or an oxide of copper and having an oxygen uptake value of at least 20.
Claim 6
Dependent Claim
22 words
A process as recited in claim 6 wherein said hydrocarbons in said feedstream have from one to five carbon atoms per molecule.
Claim 7
Dependent Claim
22 words
A process as recited in claim 7 wherein said contacting takes place at a temperature in the range of 80*F. to 250*F.
Claim 8
Dependent Claim
22 words
A process in accordance with claim 1 wherein said sorbent consists of copper having an oxygen uptake value of at least 40.
Claim 9
Dependent Claim
23 words
A process as recited in claim 9 wherein said supporting material is an alumina having a surface area of greater than 50 m2/g.
Claim 10
Dependent Claim
22 words
A process as recited in claim 10 wherein said hydrocarbons in said feedstream have from one to five carbon atoms per molecule.
Claim 11
Dependent Claim
25 words
A process in accordance with claim 1 wherein said sorbent consists of an oxide of copper having an oxygen uptake value of at least 40.
Claim 12
Dependent Claim
23 words
A process as recited in claim 12 wherein said supporting material is an alumina having a surface area of greater than 50 m2/g.
Claim 13
Dependent Claim
22 words
A process as recited in claim 13 wherein said hydrocarbons in said feedstream have from one to five carbon atoms per molecule.
Claim 14
Dependent Claim
89 words
A process for reducing the arsenic content of a gaseous hydrocarbon feedstream containing arsenic in amounts in excess of 20 ppb and being substantially free of acetylenes to produce a product having less than 10 ppb of arsenic, which process comprises contacting said feedstream with a sorbent dispersed on a supporting material, said sorbent consisting of copper or an oxide of copper and having an oxygen uptake value of at least 20. 16 A process as recited in claim 15 wherein said hydrocarbon feedstream includes olefins and water vapor.
Claim 15
Dependent Claim
23 words
A process as recited in claim 16 wherein said supporting material is an alumina having a surface area of greater than 50 m2/g.
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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |