US2631087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfur recovery process
Assignee: Fluor Corp
•
Filing: 1950-08-02
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Granted: 1953-03-10
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Expires: 1970-08-02
Abstract
No abstract record available.
Inventors
- 👤 Herndon Lyle Kermit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:23
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/48; C01B17/50; C01B17/58; C01B17/02; C01B17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE METHOD OF RECOVERING SULFUR FROM ACID SLUDGE WHICH COMPRISES MIXING ACID SLUDGE WITH INCANDESCENT COKE TO DECOMPOSE THE SLUDGE AT A TEMPERATURE NOT SUBSTANTIALLY BELOW 500* F. INTO COKE AND A GASEOUS MIXTURE COMPRISING SULFUR DIOXIDE, SCRUBBING SAID GASEOUS MIXTURE TO REMOVE COKE BREEZE, WATER AND OIL VAPOR THEREFROM, INTERMIXING A HYDROCARBON CONTAINING COMPONENT WITH SAID GASEOUS MIXTURE, PREHEATING THE INTERMIXED VAPOR THUS OBTAINED, REDUCING SULFUR DIOXIDE IN SAID INTERMIXED BY BRINGING IT INTO CONTACT WITH INCANDESCENT COKE AT A TEMPERATURE OF BETWEEN APPROXIMATELY 1200* F. AND
Claim 2
Independent Claim
88 words
THE METHOD OF RECOVERING SULFUR FROM ACID SLUDGE WHICH COMPRISES MIXING ACID SLUDGE WITH INCANDESCENT COKE TO DECOMPOSE THE SLUDGE AT A TEMPERATURE NOT SUBSTANTIALLY BELOW 500* F. INTO COKE AND A GASEOUS MIXTURE COMPRISING SULFUR DIOXIDE, SCRUBBING SAID GASEOUS MIXTURE TO REMOVE COKE BREEZE, WATER AND OIL VAPOR THEREFROM, INTERMIXING A HYDROCARBON CONTAINING COMPONENT WITH SAID GASEOUS MIXTURE, PREHEATING THE INTERMIXED VAPOR THUS OBTAINED, REDUCING SULFUR DIOXIDE IN SAID INTERMIXED BY BRINGING IT INTO CONTACT WITH INCANDESCENT COKE AT A TEMPERATURE OF BETWEEN APPROXIMATELY 1200* F. AND
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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) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |