US2977323A
Expired / Lapsed
US
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Process for reactivating used cracking catalysts
Assignee: Phillips Petroleum Co
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Filing: 1958-07-14
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Granted: 1961-03-28
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Expires: 1978-07-14
Abstract
No abstract record available.
Inventors
- 👤 Paul H Johnson
- 👤 Roy V Denton
- 👤 Charles R Eberline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:51
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/20; B01J27/00; B01J27/28; B01J27/32; Y; Y10; Y10S; Y10S502/00; Y10S502/521
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A PROCESS FOR REACTIVATING A USED CRACKING CATALYST THAT HAS BEEN EMPLOYED IN CRACKING A HYDROCARBON CONTAINING AT LEAST ONE OF NICKEL, VANADIUM AND IRON, AND WHICH COMPRISES REGENERATION OF SAID CATALYST BY BURNING CARBONACEOUS MATERIAL THEREFROM WITH AN OXYGENCONTAINING GAS AND THEN RETURNING THE CATALYST TO THE CRACKING STEP, THE IMPROVEMENT WHICH COMPRISES CONTACTING AT A TEMPERATURE FROM 850-1200*F. SAID CATALYST WITH SEAM AND WITH AT LEAST ONE CHLORINE COMPOUND SELECTED FROM THE GROUP CONSISTING OF FREE CHLORINE AND HCL AND IN AN AMOUNT PROVIDING FROM 0.05 TO 10 POUNDS OF CHLORINE PER TON OF CATALYST, AFTER SAID REGENERATION AND BEFORE SAID CRACKING STEP WITHOUT FURTHER REGENERATION, THEREBY REACTIVATING THE CATALYST CONTAINING METALLIC POISONS DEPOSITED ON SAID CATALYST AS A RESULT OF BEING EMPLOYED IN CRACKING SAID HYDROCARBON CONTAINING AT LEAST ONE OF NICKEL, VANADIUM AND IRON.
Claim 2
Dependent Claim
139 words
IN A PROCESS FOR REACTIVATING A USED CRACKING CATALYST THAT HAS BEEN EMPLOYED IN CRACKING A HYDROCARBON CONTAINING AT LEAST ONE OF NICKEL, VANADIUM AND IRON, AND WHICH COMPRISES REGENERATION OF SAID CATALYST BY BURNING CARBONACEOUS MATERIAL THEREFROM WITH AN OXYGENCONTAINING GAS AND THEN RETURNING THE CATALYST TO THE CRACKING STEP, THE IMPROVEMENT WHICH COMPRISES CONTACTING AT A TEMPERATURE FROM 850-1200*F. SAID CATALYST WITH SEAM AND WITH AT LEAST ONE CHLORINE COMPOUND SELECTED FROM THE GROUP CONSISTING OF FREE CHLORINE AND HCL AND IN AN AMOUNT PROVIDING FROM 0.05 TO 10 POUNDS OF CHLORINE PER TON OF CATALYST, AFTER SAID REGENERATION AND BEFORE SAID CRACKING STEP WITHOUT FURTHER REGENERATION, THEREBY REACTIVATING THE CATALYST CONTAINING METALLIC POISONS DEPOSITED ON SAID CATALYST AS A RESULT OF BEING EMPLOYED IN CRACKING SAID HYDROCARBON CONTAINING AT LEAST ONE OF NICKEL, VANADIUM AND IRON.
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 |