US2644797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasification of sulfuric acid wastes
Assignee: California Research LLC
•
Filing: 1947-12-09
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Granted: 1953-07-07
•
Expires: 1967-12-09
Abstract
No abstract record available.
Inventors
- 👤 William H Shiffler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:12
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
121 words
THE METHOD OF BURNING SULFURIC ACID WASTES FORMED IN THE REFINING OF PETROLEUM DISTILLATES WITH CONCENTRATED SULFURIC ACID TO CONVERT THE SULFUR CONTAINED IN THE WASTED PERDOMINANTLY TO HYDROGEN SULFIDE, WHICH COMPRISED INTRODUCING THE ACID WASTED INTO A COMBUSTION ZONE MAINTAINED AT AN ELEVATED TEMPERATURE ABOVE ABOUT 2200* F. IN THE PRESENCE OF ADDED OXYGEN SUFFICIENT TO RAISE THE TOTAL OXYGEN CONTENT OF THE COMBUSTION ZONE ABOVE THE AMOUNT STOICHIOMETRICALLY REQUIRED TO CONVERT ALL OF THE CARBON IN THE ACID WASTE TO CARBON MONOXIDE BUT SUFFICIENT TO RAISE THE TOTAL OXYGEN IN THE COMBUSTION ZONE TO THE AMOUNT STOICHIOMETRICALLY REQUIRED TO CONVERT ALL OF THE CARBON AND ALL OF THE HYDROGEN IN THE ACID WASTE TO CARBON DIOXIDE AND WATER RESPECTIVELY
Claim 2
Independent Claim
121 words
THE METHOD OF BURNING SULFURIC ACID WASTES FORMED IN THE REFINING OF PETROLEUM DISTILLATES WITH CONCENTRATED SULFURIC ACID TO CONVERT THE SULFUR CONTAINED IN THE WASTED PERDOMINANTLY TO HYDROGEN SULFIDE, WHICH COMPRISED INTRODUCING THE ACID WASTED INTO A COMBUSTION ZONE MAINTAINED AT AN ELEVATED TEMPERATURE ABOVE ABOUT 2200* F. IN THE PRESENCE OF ADDED OXYGEN SUFFICIENT TO RAISE THE TOTAL OXYGEN CONTENT OF THE COMBUSTION ZONE ABOVE THE AMOUNT STOICHIOMETRICALLY REQUIRED TO CONVERT ALL OF THE CARBON IN THE ACID WASTE TO CARBON MONOXIDE BUT SUFFICIENT TO RAISE THE TOTAL OXYGEN IN THE COMBUSTION ZONE TO THE AMOUNT STOICHIOMETRICALLY REQUIRED TO CONVERT ALL OF THE CARBON AND ALL OF THE HYDROGEN IN THE ACID WASTE TO CARBON DIOXIDE AND WATER RESPECTIVELY
Claim 3
Dependent Claim
165 words
THE METHOS OF BURNING SULFURIC ACID WASTES FORMED IN THE REFINING OF PETROLEUM DISTILLATES WITH CONCENTRATED SULFURIC ACID TO CONVERT THE SULFUR CONTAINED IN THE WASTES PREDOMINANTLY TO HYDROGEN SULFIDE, WHICH COMPRISES INTRODUCING THE WASTE IN FINELY DIVIDED FORM INTO A COMBUSTION ZONE MAINTAINED AT AN ELEVATED TEMPERATURE OF ABOUT 2500* F. AND AT AN ELEVATED PRESSURE OF ABOUT 20 ATMOSPHERES, SIMULTANEOUSLY INTRODUCING INTO THE COMBUSTION ZONE AND INTO CONTACT WITH THE FINELY DIVIDED WASTE A COMBUSTION SUPPORTING GAS COMPRISING AT LEAST 65% BY VOLUME OF ELEMENTAL OXYGEN TO GASIFY THE WASTE BY COMBUSTION, MAINTAINING THE RATIO OF TOTAL OXYGEN TO ACID WASTE IN THE COMBUSTION ZONE ABOVE THAT STOICHIOMETRICALLY REQUIRED TO CONVERT ALL OF THE CARBON CONTAINED IN THE WASTE TO CARBON MONOXIDE AND SUBSTANTIALLY BELOW THAT STOICHIOMETRICALLY REQUIRED FOR THE COMPLETE COMBUSTION OF THE WASTE SUCH THAT THE GASEOUS COMBUSTION PRODUCT EFFLUENT FROM THE COMBUSTION ZONE CONSISTS PREDOMINANTLY OF CARBON MONOXIDE AND HYDROGEN AND CONTAINS LESSER AMOUNTS OF CARBON DIOXIDE AND WATER VAPOR.
Claim 4
Dependent Claim
165 words
THE METHOS OF BURNING SULFURIC ACID WASTES FORMED IN THE REFINING OF PETROLEUM DISTILLATES WITH CONCENTRATED SULFURIC ACID TO CONVERT THE SULFUR CONTAINED IN THE WASTES PREDOMINANTLY TO HYDROGEN SULFIDE, WHICH COMPRISES INTRODUCING THE WASTE IN FINELY DIVIDED FORM INTO A COMBUSTION ZONE MAINTAINED AT AN ELEVATED TEMPERATURE OF ABOUT 2500* F. AND AT AN ELEVATED PRESSURE OF ABOUT 20 ATMOSPHERES, SIMULTANEOUSLY INTRODUCING INTO THE COMBUSTION ZONE AND INTO CONTACT WITH THE FINELY DIVIDED WASTE A COMBUSTION SUPPORTING GAS COMPRISING AT LEAST 65% BY VOLUME OF ELEMENTAL OXYGEN TO GASIFY THE WASTE BY COMBUSTION, MAINTAINING THE RATIO OF TOTAL OXYGEN TO ACID WASTE IN THE COMBUSTION ZONE ABOVE THAT STOICHIOMETRICALLY REQUIRED TO CONVERT ALL OF THE CARBON CONTAINED IN THE WASTE TO CARBON MONOXIDE AND SUBSTANTIALLY BELOW THAT STOICHIOMETRICALLY REQUIRED FOR THE COMPLETE COMBUSTION OF THE WASTE SUCH THAT THE GASEOUS COMBUSTION PRODUCT EFFLUENT FROM THE COMBUSTION ZONE CONSISTS PREDOMINANTLY OF CARBON MONOXIDE AND HYDROGEN AND CONTAINS LESSER AMOUNTS OF CARBON DIOXIDE AND WATER VAPOR.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |