US3761569A
Expired / Lapsed
US
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Method of removing hydrogen sulfide from gases
Assignee: Mobil Oil AS
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Filing: 1971-01-28
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Granted: 1973-09-25
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Expires: 1991-01-28
Abstract
Abstract A method for removing hydrogen sulfide from a gas stream involves passing the hydrogen sulfide-containing gas through a solution of cupric ions in a strong acid in the presence of oxygen.
Inventors
- 👤 Ahmadi Ibrahim Heiba El
- 👤 Srinivasan Sundaresa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:07
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/52; B01D53/523
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
14 words
The method of claim 1 wherein the cupric ions are provided by cupric chloride.
Claim 2
Dependent Claim
27 words
The method of claim 1 wherein the oxygen is in the form of a gas selected from the group consisting of oxygen, air, ozone and oxygen-enriched air.
Claim 3
Dependent Claim
12 words
The method of claim 3 wherein the oxygen is present as air.
Claim 4
Dependent Claim
33 words
The method of claim 1 wherein the cupric ions are present as a cupric salt at a concentration of from 0.05 to about 5 gram moles of salt per liter of acid solution.
Claim 5
Dependent Claim
24 words
The method of claim 1 wherein the volume ratio of H2S in the gas stream to oxygen is from about 1:1 to about 1:300.
Claim 6
Dependent Claim
22 words
The method of claim 1 wherein the pH of the said solution is in the range of from 1 to about 6.
Claim 7
Dependent Claim
21 words
The method of claim 1 wherein there is also present in the solution an alkali metal salt of the said acid.
Claim 8
Dependent Claim
29 words
The method of claim 1 wherein the gas stream containing hydrogen sulfide and a stream of air are passed through a solution of cupric chloride dissolved in hydrochloric acid.
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |