US3682779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of carbonyl compounds,residual oxygen and other impurities from hydrocarbon dehydrogenation effluent
Assignee: Phillips Petroleum Co
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Filing: 1969-09-19
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Granted: 1972-08-08
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Expires: 1989-09-19
Abstract
Abstract CARBONYL COMPUNDS AND RESIDUAL OXYGEN ARE REMOVED FROM HYDROCARBON DEHYDROGENATION EFFLUENT CONTAINING RICH OIL STRIPPER OVERHEAT VAPORS, PRIOR, TO CONDENSING HYDROCARBON PRODUCT, WITH WATER SOLUTION SPRAY, E.G., 1 WEIGHT PERCENT KOH, TO REMOVE CARBONYL COMPOUNDS AND 1 WEIGHT PERCENT BISULFITE OR NITRITE SOLUTION TO REMOVE OXYGEN AND ORGANIC ACIDS. A COMBINATION OF AGENTS CAN BE USED. THE WATER SOLUTION AND REMOVED MATERIALS ALONG WITH STEAM CONDENSATE ARE REMOVED FROM A SUITABLE TRAY IN THE STRIPPER. THE C4 OR C5 OLEFINS CONTAINED IN DEHYDROGENATION EFFLUENT AFTER ABSORPTION INTO AN OIL ARE RECOVERED THEREFROM IN A STRIPPER TO WHICH THE SPARY IS FED.
Inventors
- 👤 Ronald E Ritter
- 👤 Thomas Hutson Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:08
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |