US4650564A
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Process for cracking high metals content feedstocks
Assignee: Chevron USA Inc
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Filing: 1984-09-17
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Granted: 1987-03-17
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Expires: 2004-09-17
Abstract
Abstract A process for cracking high metals content feedstocks which comprises contacting said feedstocks under catalytic cracking conditions with a novel catalytic cracking composition comprising a solid cracking catalyst and an alumina diluent.
Inventors
- 👤 Mario L. Occelli
- 👤 James V. Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:37
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
In a process which comprises the cracking, in the absence of added hydrogen, of a metals-containing hydrocarbon feed in a cracking zone under cracking conditions employing a cracking catalyst having high activity; the improvement which comprises combining with said catalyst a diluent consisting essentially of alumina to form a catalyst composite containing a weight ratio of said high activity cracking catalyst to alumina in the range of 50:50 to 90:10, said diluent forming a separate and distinct entity within said catalyst composite.
Claim 2
Dependent Claim
82 words
In a process which comprises the cracking, in the absence of added hydrogen, of a metals-containing hydrocarbon feed in a cracking zone under cracking conditions employing a cracking catalyst having high activity; the improvement which comprises combining with said catalyst a diluent consisting essentially of alumina to form a catalyst composite containing a weight ratio of said high activity cracking catalyst to alumina in the range of 50:50 to 90:10, said diluent forming a separate and distinct entity within said catalyst composite.
Claim 3
Dependent Claim
24 words
The process of claim 1 wherein said diluent is combined with said cracking catalyst prior to contacting said hydrocarbon feed in said cracking zone.
Claim 4
Dependent Claim
19 words
The process of claim 1 wherein said diluent is introduced into said cracking zone in combination with said feed.
Claim 5
Dependent Claim
19 words
The process of claim 2 wherein said cracking catalyst is a catalyst at equilibrium conditions in said cracking zone.
Claim 6
Dependent Claim
29 words
The process of claim 1 wherein said diluent is combined with said cracking catalyst so as to maintain a conversion of at least 55 percent in said cracking zone.
Claim 7
Dependent Claim
11 words
The process of claim 1 wherein said metal contaminant is vanadium.
Claim 8
Dependent Claim
25 words
The process of claim 1 wherein said metal contaminant is vanadium and the concentration of vanadium on said catalyst composite is at least 5000 ppm.
Claim 9
Dependent Claim
27 words
The process of claim 1 wherein the concentration of nickel, vanadium and iron contaminants on said catalyst composite is in the range of 4000 to 20,000 ppm.
References Cited (Backward Citations)
US3944482A
Cited
US4292169A
Cited
US4369108A
Cited
US4280898A
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US4299687A
Cited
US4337144A
Cited
US4376039A
Cited
US4469588A
Cited
US4465588A
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US4534855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |