US2708983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of elementary sulfur from gases
Assignee: Phillips Petroleum Co
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Filing: 1952-11-10
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Granted: 1955-05-24
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Expires: 1972-11-10
Abstract
No abstract record available.
Inventors
- 👤 John W Mccarthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:55
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A PROCESS FOR RECOVERING ELEMENTRAY SULFUR FROM HOT GASES CONTAINING ELEMENTARY SULFUR ISSUING FROM A FREE SULFUR PRODUCING REACTION COMPRISING SLOWLY COOLING SAID GASES TO A TEMPERATURE BELOW THE DEW POINT BUT ABOVE THE FREEZING POINT OF SULFUR WHEREBY A PORTION OF THE ELEMENTARY SULFUR CONTENT CONDENSES TO LIQUID SULFUR, RAPIDLY COOLING THE PARTIALLY SULFUR DEPLETED GASES TO A TEMPERATURE FROM ABOUT 280* F. WHEREBY ADDITIONS SULFUR CONDENSES AS LIQUID, PASSING THE FURTHER COOLED SULFUR CONTAINING GASES INDIRECT HEAT EXCHANGE RELATION WITH THE ATMOSPHERE IN AN UPFLOWING DIRECTION, MAINTAINING THE TEMPERATURE OF THE INDIRECT HEAT EXCHANGE SURFACE ABOVE THE FREEZING POINT OF ELEMENTARY SULFUR WHEREBY FURTHER LIQUID SULFUR CONDENSES ON SAID INDIRECT HEAT EXCHANGE SURFACE, EXHAUSTING THE SULFUR DEPLETED GASES TO THE ATMOSPHERE AND RECOVERING THE CONDENSED SULFUR AS THE PRODUCT OF THE PROCESS.
Claim 2
Dependent Claim
134 words
A PROCESS FOR RECOVERING ELEMENTRAY SULFUR FROM HOT GASES CONTAINING ELEMENTARY SULFUR ISSUING FROM A FREE SULFUR PRODUCING REACTION COMPRISING SLOWLY COOLING SAID GASES TO A TEMPERATURE BELOW THE DEW POINT BUT ABOVE THE FREEZING POINT OF SULFUR WHEREBY A PORTION OF THE ELEMENTARY SULFUR CONTENT CONDENSES TO LIQUID SULFUR, RAPIDLY COOLING THE PARTIALLY SULFUR DEPLETED GASES TO A TEMPERATURE FROM ABOUT 280* F. WHEREBY ADDITIONS SULFUR CONDENSES AS LIQUID, PASSING THE FURTHER COOLED SULFUR CONTAINING GASES INDIRECT HEAT EXCHANGE RELATION WITH THE ATMOSPHERE IN AN UPFLOWING DIRECTION, MAINTAINING THE TEMPERATURE OF THE INDIRECT HEAT EXCHANGE SURFACE ABOVE THE FREEZING POINT OF ELEMENTARY SULFUR WHEREBY FURTHER LIQUID SULFUR CONDENSES ON SAID INDIRECT HEAT EXCHANGE SURFACE, EXHAUSTING THE SULFUR DEPLETED GASES TO THE ATMOSPHERE AND RECOVERING THE CONDENSED SULFUR AS THE PRODUCT OF THE PROCESS.
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) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |