US3192151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of metallic impurities from cracking catalysts
Assignee: Atlantic Richfield Co
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Filing: 1964-08-03
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Granted: 1965-06-29
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Expires: 1984-08-03
Abstract
No abstract record available.
Inventors
- 👤 Jr James E Connor
- 👤 Joseph A Cahill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:43
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
166 words
A METHOD FOR IMPROVING THE PRODUCT DISTRIBUTION RESULTING FROM A HYDROCARBON CATALYTIC CRACKING PROCESS IN WHICH IS EMPLOYED A SILICA-ALUMINA CRACKING CATALYST, WHICH CATALYST HASS BECOME CONTAMINATED WITH COKE-FORMING AND GAS-FORMING METALLIC IMPURITIES DURING USE, WHICH COMPRISES (A) SEPARATING AT LEAST A PORTION OF THE TOTAL CATALYST FROM THE PROCESS, (B) CONTACTING THE CONTAMINATED CATALYST AT A TEMPERATURE RANGING FROM 900*F. TO 1400*F. WITH A NONOXIDIZING GAS CONTAINING FREE HYDROGEN WHEREBY AT LEAST A PORTION OF THE METALLIC IMPURITIES ARE REDUCED TO THE METALLIC STATE, (C) CONTACTING THE HYDROGEN TREATED CATALYST WITH A GAS CONTAINING FREE OXYGEN AT A TEMPERATURE BELOW ABOUT 750*F. (D) CONTACTING THE OXYGEN TREATED CATALYST WITH A CATION EXCHANGE RESIN IN THE HYDROGEN CYCLE IN AN AQUEOUS MEDIUM AT A PH SUCH THAT THE COKE-FORMING AND GAS-FORMING METAL CONTAMINANTS ARE REMOVED FROM THE CATALYST WHILE THE STABILITY OF THE CATALYST IS SUBSTANTIALLY MAINTAINED, (E) SEPARATING THE CONTACTED CATALYST FROM THE RESIN, AND (F) RETURNING THE CONTACTED CATALYST TO THE HYDROCARBON CRACKING PROCESS.
Claim 2
Independent Claim
166 words
A METHOD FOR IMPROVING THE PRODUCT DISTRIBUTION RESULTING FROM A HYDROCARBON CATALYTIC CRACKING PROCESS IN WHICH IS EMPLOYED A SILICA-ALUMINA CRACKING CATALYST, WHICH CATALYST HASS BECOME CONTAMINATED WITH COKE-FORMING AND GAS-FORMING METALLIC IMPURITIES DURING USE, WHICH COMPRISES (A) SEPARATING AT LEAST A PORTION OF THE TOTAL CATALYST FROM THE PROCESS, (B) CONTACTING THE CONTAMINATED CATALYST AT A TEMPERATURE RANGING FROM 900*F. TO 1400*F. WITH A NONOXIDIZING GAS CONTAINING FREE HYDROGEN WHEREBY AT LEAST A PORTION OF THE METALLIC IMPURITIES ARE REDUCED TO THE METALLIC STATE, (C) CONTACTING THE HYDROGEN TREATED CATALYST WITH A GAS CONTAINING FREE OXYGEN AT A TEMPERATURE BELOW ABOUT 750*F. (D) CONTACTING THE OXYGEN TREATED CATALYST WITH A CATION EXCHANGE RESIN IN THE HYDROGEN CYCLE IN AN AQUEOUS MEDIUM AT A PH SUCH THAT THE COKE-FORMING AND GAS-FORMING METAL CONTAMINANTS ARE REMOVED FROM THE CATALYST WHILE THE STABILITY OF THE CATALYST IS SUBSTANTIALLY MAINTAINED, (E) SEPARATING THE CONTACTED CATALYST FROM THE RESIN, AND (F) RETURNING THE CONTACTED CATALYST TO THE HYDROCARBON CRACKING PROCESS.
References Cited (Backward Citations)
US2575258A
Cited
US3041270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |