US2662041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for cleaning refining equipment
Assignee: Sunoco Inc
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Filing: 1949-12-30
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Granted: 1953-12-08
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Expires: 1969-12-30
Abstract
No abstract record available.
Inventors
- 👤 Patrick F Dougherty
- 👤 Lloyd G Magill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:33
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
PROCESS FOR REMOVING SULFUR FROM AN ABSORPTION TOWER CONTAINING A PLURALITY OF BUBBLE TRAYS WHICH COMPRISES DISCONTINUING NORMAL OPERATION OF THE ABSORPTION TOWER, INTRODUCING HOT WATER INTO SAID BUBBLE TRAYS, INTRODUCING STEAM AT A TEMPERATURE OF FROM ABOUT 125* C. TO ABOUT 150* C. INTO THE BOTTOM OF SAID TOWER AND PASSING SAID STEAM UP THROUGH THE GAS SPACES IN EACH OF SAID BUBBLE TRAYS THEREBY CAUSING AGITATION OF THE MIXTURE OF SULFUR AND WATER THEREON SO THAT SAID MIXTURE OF SULFUR AND WATER FLOWS OVER THE BARRIERS OF THE TRAYS TO THE BOTTOM OF SAID TOWER, MAINTAINING THE PRESSURE WITHIN THE ABSORPTION TOWER SUFFICIENT TO MAINTAIN THE TEMPERATURE OF SAID STEAM AND SAID WATER THEREIN ABOVE THE MELTING POINT OF SULFUR, REMOVING A MIXTURE OF THE WATER AND SULFUR FROM THE BOTTOM OF SAID TOWER, AND CONTINUING SAID PROCESS UNTIL THE SULFUR IS SUBSTANTIALLY COMPLETELY REMOVED FROM SAID TOWER.
Claim 2
Dependent Claim
150 words
PROCESS FOR REMOVING SULFUR FROM AN ABSORPTION TOWER CONTAINING A PLURALITY OF BUBBLE TRAYS WHICH COMPRISES DISCONTINUING NORMAL OPERATION OF THE ABSORPTION TOWER, INTRODUCING HOT WATER INTO SAID BUBBLE TRAYS, INTRODUCING STEAM AT A TEMPERATURE OF FROM ABOUT 125* C. TO ABOUT 150* C. INTO THE BOTTOM OF SAID TOWER AND PASSING SAID STEAM UP THROUGH THE GAS SPACES IN EACH OF SAID BUBBLE TRAYS THEREBY CAUSING AGITATION OF THE MIXTURE OF SULFUR AND WATER THEREON SO THAT SAID MIXTURE OF SULFUR AND WATER FLOWS OVER THE BARRIERS OF THE TRAYS TO THE BOTTOM OF SAID TOWER, MAINTAINING THE PRESSURE WITHIN THE ABSORPTION TOWER SUFFICIENT TO MAINTAIN THE TEMPERATURE OF SAID STEAM AND SAID WATER THEREIN ABOVE THE MELTING POINT OF SULFUR, REMOVING A MIXTURE OF THE WATER AND SULFUR FROM THE BOTTOM OF SAID TOWER, AND CONTINUING SAID PROCESS UNTIL THE SULFUR IS SUBSTANTIALLY COMPLETELY REMOVED FROM SAID TOWER.
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) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |