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Patent US2977322A successfully refreshed from Google Patents.
US2977322A
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Deactivation of metallic poisons on used cracking catalysts
Assignee: Phillips Petroleum Co
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Filing: 1957-07-25
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Granted: 1961-03-28
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Expires: 1977-07-25
Abstract
No abstract record available.
Inventors
- 👤 Charles W Varvel
- 👤 Dean P Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:33
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/28; B01J27/285; B01J21/00; B01J21/20; Y; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/516
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS FOR IMPROVING THE ACTIVITY AND LOWERING THE COKE-FORMING CHARACTERISTICS OF A USED SILICA-CONTAINING HYDROCARBON CRACKING CATALYST CONTAMINATED WITH POISONS COMPRISING NICKEL AND VANADIUM WHICH COMPRISES IMPREGNATING SAID CATALYST AT A TEMPERATURE IN THE RANGE OF ATMOSPHERIC TO 1150*F. WITH A COMPOUND CONTAINING PHOSPHORUS AND WITH CHLORINE SO AS TO DEPOSIT THEREIN PHOSPHORUS AND CHLORINE IN AMOUNTS OF AT LEAST 0.001 WEIGHT PERCENT OF THE CATALYST AND SUFFICIENT TO DEACTIVATE SAID POISONS AND THEREAFTER SUBJECTING THE TREATED CATALYST TO HYDRATION IN A STEAM AMBIENT AT A TEMPERATURE IN THE RANGE OF ABOUT 900*F. TO ABOUT 1100*F.
Claim 2
Dependent Claim
97 words
A PROCESS FOR IMPROVING THE ACTIVITY AND LOWERING THE COKE-FORMING CHARACTERISTICS OF A USED SILICA-CONTAINING HYDROCARBON CRACKING CATALYST CONTAMINATED WITH POISONS COMPRISING NICKEL AND VANADIUM WHICH COMPRISES IMPREGNATING SAID CATALYST AT A TEMPERATURE IN THE RANGE OF ATMOSPHERIC TO 1150*F. WITH A COMPOUND CONTAINING PHOSPHORUS AND WITH CHLORINE SO AS TO DEPOSIT THEREIN PHOSPHORUS AND CHLORINE IN AMOUNTS OF AT LEAST 0.001 WEIGHT PERCENT OF THE CATALYST AND SUFFICIENT TO DEACTIVATE SAID POISONS AND THEREAFTER SUBJECTING THE TREATED CATALYST TO HYDRATION IN A STEAM AMBIENT AT A TEMPERATURE IN THE RANGE OF ABOUT 900*F. TO ABOUT 1100*F.
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) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |