US3168482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the removal of nickel, iron, and vanadium from a silica based cracking catalyst
Assignee: Sinclair Research Inc
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Filing: 1960-08-05
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Granted: 1965-02-02
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Expires: 1980-08-05
Abstract
No abstract record available.
Inventors
- 👤 Arvin D Anderson
- 👤 Jr Emmett H Burk
- 👤 Larry L Simantel
- 👤 Robert A Sanford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:37
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/20; Y; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/516
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A METHOD FOR REMOVING NICKEL FROM A SYNTHETIC GEL, SILICA-BASED CATALYST WHICH HAS BEEN POISONED BY CONTAMINATION WITH NICKEL DUE TO USE OF SAID CATALYST IN A CRACKING SYSTEM PRODUCING GASOLINE AND WHEREIN CATALYST IS CYCLED BETWEEN A CRACKING ZONE, IN WHICH THE CATALYST IS CONTACTED AT AN ELEVATED TEMPERATURE WITH A HYDROCARBON FEEDSTOCK HEAVIER THAN GASOLINE CONTAINING SAID NICKEL CONTAMINANT WHICH DEPOSITS ON THE CATALYST, AND A REGENERATION ZONE, IN WHICH CARBON IS OXIDIZED AND THEREBY REMOVED FROM THE CATALYST, WHICH COMPRISES BLEEDING A PORTION OF NICKEL CONTAMINATED CATALYST FROM THE CRACKING SYSTEM, REDUCING A SUBSTANTIAL AMOUNT OF NICKEL TO THE ELEMENTAL STATE BY CONTACT OF BLED CATALYST AT AN ELEVATED TEMPERATURE OF ABOUT 800-1600*F. WITH HYDROGEN, FORMING NICKEL CARBONYL FROM ELEMENTAL NICKEL AND REMOVING SAID CARBONYL BY CONTACT OF THE CATALYST WITH CARBON MONOXIDE AT A SUBSTANTIALLY LOWER TEMPERATURE AND RETURNING RESULTING DENICKELIZED CATALYST TO A CRACKING SYSTEM.
Claim 2
Independent Claim
150 words
A METHOD FOR REMOVING NICKEL FROM A SYNTHETIC GEL, SILICA-BASED CATALYST WHICH HAS BEEN POISONED BY CONTAMINATION WITH NICKEL DUE TO USE OF SAID CATALYST IN A CRACKING SYSTEM PRODUCING GASOLINE AND WHEREIN CATALYST IS CYCLED BETWEEN A CRACKING ZONE, IN WHICH THE CATALYST IS CONTACTED AT AN ELEVATED TEMPERATURE WITH A HYDROCARBON FEEDSTOCK HEAVIER THAN GASOLINE CONTAINING SAID NICKEL CONTAMINANT WHICH DEPOSITS ON THE CATALYST, AND A REGENERATION ZONE, IN WHICH CARBON IS OXIDIZED AND THEREBY REMOVED FROM THE CATALYST, WHICH COMPRISES BLEEDING A PORTION OF NICKEL CONTAMINATED CATALYST FROM THE CRACKING SYSTEM, REDUCING A SUBSTANTIAL AMOUNT OF NICKEL TO THE ELEMENTAL STATE BY CONTACT OF BLED CATALYST AT AN ELEVATED TEMPERATURE OF ABOUT 800-1600*F. WITH HYDROGEN, FORMING NICKEL CARBONYL FROM ELEMENTAL NICKEL AND REMOVING SAID CARBONYL BY CONTACT OF THE CATALYST WITH CARBON MONOXIDE AT A SUBSTANTIALLY LOWER TEMPERATURE AND RETURNING RESULTING DENICKELIZED CATALYST TO A CRACKING SYSTEM.
References Cited (Backward Citations)
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Cited
US2267736A
Cited
US2276921A
Cited
US2380731A
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US2488718A
Cited
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Cited
US2575258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |