Patent US2959687A successfully refreshed from Google Patents.
US3076755A
Expired / Lapsed
US
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Regeneration process
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1959-08-31
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Granted: 1963-02-05
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Expires: 1979-08-31
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Stark
- 👤 Charles W Siegmund
- 👤 Sosnowski John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:01
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; B; B01; B01J; B01J23/00; B01J23/90; B01J23/94
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A METHOD FOR REGENERATING COBALT OXIDE-MOLYBDENUM OXIDE ON ALUMINA CATALYSTS WHICH HAVE BECOME DEACTIVATED BY THE ACCUMULATION OF CARBONACEOUS DEPOSITS THEREON IN THE HYDROFINING OF HYDROCARBON FRACTIONS WHICH COMPRISES STRIPPING THE SPENT CATALYST WITH STEAM AT TEMPERATURES ABOVE ABOUT 250*F., INCREASING THE TEMPERATURE OF THE STEAM TO ABOUT 350-450*F., ADDING LIMITED AMOUNTS OF AIR TO THE STREAM IN ORDER TO BURN THE CARBONACEOUS DEPOSITS THEREFROM, CORRELATING THE TEMPERATURE OF INCOMING STREAM AND THE AMOUNT OF AIR ADDED TO LIMIT THE PEAK CATALYST REGENERATION TEMPERATURE TO 700-750*F., STRIPPING THE REGENATED CATALYST AND RESUMING THE HYDROFINING OF HYDROCARBON FRACTIONS THEREWITH.
Claim 2
Independent Claim
98 words
A METHOD FOR REGENERATING COBALT OXIDE-MOLYBDENUM OXIDE ON ALUMINA CATALYSTS WHICH HAVE BECOME DEACTIVATED BY THE ACCUMULATION OF CARBONACEOUS DEPOSITS THEREON IN THE HYDROFINING OF HYDROCARBON FRACTIONS WHICH COMPRISES STRIPPING THE SPENT CATALYST WITH STEAM AT TEMPERATURES ABOVE ABOUT 250*F., INCREASING THE TEMPERATURE OF THE STEAM TO ABOUT 350-450*F., ADDING LIMITED AMOUNTS OF AIR TO THE STREAM IN ORDER TO BURN THE CARBONACEOUS DEPOSITS THEREFROM, CORRELATING THE TEMPERATURE OF INCOMING STREAM AND THE AMOUNT OF AIR ADDED TO LIMIT THE PEAK CATALYST REGENERATION TEMPERATURE TO 700-750*F., STRIPPING THE REGENATED CATALYST AND RESUMING THE HYDROFINING OF HYDROCARBON FRACTIONS THEREWITH.
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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |