Patent US2889207A successfully refreshed from Google Patents.
US2889207A
Expired / Lapsed
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Method for recovery of sulfur from hydrogen sulfide-containing gases
Assignee: Pan American Petroleum Corp
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Filing: 1954-11-12
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Granted: 1959-06-02
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Expires: 1974-11-12
Abstract
No abstract record available.
Inventors
- 👤 Theodore Q Eliot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:38
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/0404; C01B17/0413
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A PAROCESS FOR THE PRODUCTIOON OF FREE SULFUR FROM HYDROGEN SULFIDE PRESENT IN A GASEOUS HYDROCARBON MIXTURE IN CONCENTRATIONS OF AT LEAST ABOUT 15 MOL PERCENT WHEREIN THE HYDROGEN SULFIDE IN SAID MIXTURE IS SUBJECTED TO OXIDATION IN THE PRESENCE OF FREE OXYGEN TO CONVERT APPROXIMATELY ONE-THIRD OF SAID HYDRAOGEN TO CONVERT FUR DIOXIDE FOLLOWED BY REACTION OF SULFUR DIOXIDE WITH THE REMAINING UNCOVERTED HYDROGEN SULFIDE TO PRODUCE FREE SULFUR IN A KNOW MANNER, THE IMPROVEMENT WHICH COMPRISES ADJUSTING THE HYDROCARBON CONTENT OF SAID MIXTURE PRIOR TO SAID OXIDATION STEP TO AN AMOUNT CORRESPONDING TO NOT MORE THAN ABOUT ONE-THIRD, ON A MOLAR BASIS, OF THE HYDROGEN SULFIDE IN SAID MIXTURE, SO THAT THE WATER PRODUCED IN SAID STEP IN ACCORDANCE WITH THE EXOTHERMIC REACTION.
Claim 2
Dependent Claim
126 words
IN A PAROCESS FOR THE PRODUCTIOON OF FREE SULFUR FROM HYDROGEN SULFIDE PRESENT IN A GASEOUS HYDROCARBON MIXTURE IN CONCENTRATIONS OF AT LEAST ABOUT 15 MOL PERCENT WHEREIN THE HYDROGEN SULFIDE IN SAID MIXTURE IS SUBJECTED TO OXIDATION IN THE PRESENCE OF FREE OXYGEN TO CONVERT APPROXIMATELY ONE-THIRD OF SAID HYDRAOGEN TO CONVERT FUR DIOXIDE FOLLOWED BY REACTION OF SULFUR DIOXIDE WITH THE REMAINING UNCOVERTED HYDROGEN SULFIDE TO PRODUCE FREE SULFUR IN A KNOW MANNER, THE IMPROVEMENT WHICH COMPRISES ADJUSTING THE HYDROCARBON CONTENT OF SAID MIXTURE PRIOR TO SAID OXIDATION STEP TO AN AMOUNT CORRESPONDING TO NOT MORE THAN ABOUT ONE-THIRD, ON A MOLAR BASIS, OF THE HYDROGEN SULFIDE IN SAID MIXTURE, SO THAT THE WATER PRODUCED IN SAID STEP IN ACCORDANCE WITH THE EXOTHERMIC REACTION.
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) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |