Patent US4584283A successfully refreshed from Google Patents.
US4584283A
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Cracking catalyst restoration with aluminum compounds
Assignee: Phillips Petroleum Co
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Filing: 1982-09-29
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Granted: 1986-04-22
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Expires: 2002-09-29
Abstract
Abstract A method of restoring activity to a cracking catalyst which has been at least partially deactivated by metals contamination which involves contacting the cracking catalyst with a treating agent comprising a source of aluminum.
Inventors
- 👤 Brent J. Bertus
- 👤 H. Wayne Mark
- 👤 Dwight L. McKay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:28
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/90; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; B01J2229/00; B01J2229/30; B01J2229/34; B01J2229/40; Y; Y10; Y10S; Y10S502/00; Y10S502/521
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
106 words
A process comprising contacting a zeolite modified cracking catalyst having deposited thereon at least 3,000 parts per million vanadium equivalents of contaminants selected from the group consisting of nickel, vanadium and iron with a treating agent compound represented by the formula (RX 2 PX 2 ) 3 Al wherein each X is independently selected from the group consisting of oxygen and sulfur and at least one X is sulfur, and wherein R is a hydrocarbyl group having from 1 to about 20 carbon atoms so as to deposit an amount of treating agent on said cracking catalyst sufficient to reduce the deleterious effects of said contaminants.
Claim 2
Dependent Claim
106 words
A process comprising contacting a zeolite modified cracking catalyst having deposited thereon at least 3,000 parts per million vanadium equivalents of contaminants selected from the group consisting of nickel, vanadium and iron with a treating agent compound represented by the formula (RX 2 PX 2 ) 3 Al wherein each X is independently selected from the group consisting of oxygen and sulfur and at least one X is sulfur, and wherein R is a hydrocarbyl group having from 1 to about 20 carbon atoms so as to deposit an amount of treating agent on said cracking catalyst sufficient to reduce the deleterious effects of said contaminants.
Claim 3
Dependent Claim
32 words
A process as in claim 1 wherein the treating agent compound is mixed with a hydrocarbon feedstock and contacted with the cracking catalyst in the cracking zone of a catalytic cracking reactor.
Claim 4
Dependent Claim
84 words
A process comprising contacting a zeolite modified cracking catalyst having deposited thereon at least 3000 parts per million vanadium equivalents of contaminants selected from the group consisting of nickel, vanadium and iron with a treating agent compound represented by the formula ((RO) 2 PS 2 ) 3 Al wherein R is a hydrocarbyl broup having from 1 to about 20 carbon atoms so as to deposit an amount of treating agent on said cracking catalyst sufficient to reduce the deleterious effects of said contaminants.
Claim 5
Dependent Claim
84 words
A process comprising contacting a zeolite modified cracking catalyst having deposited thereon at least 3000 parts per million vanadium equivalents of contaminants selected from the group consisting of nickel, vanadium and iron with a treating agent compound represented by the formula ((RO) 2 PS 2 ) 3 Al wherein R is a hydrocarbyl broup having from 1 to about 20 carbon atoms so as to deposit an amount of treating agent on said cracking catalyst sufficient to reduce the deleterious effects of said contaminants.
Claim 6
Dependent Claim
12 words
A process as in claim 3 wherein both R groups are n-propyl.
Claim 7
Dependent Claim
22 words
A process as in claim 4 wherein the cracking catalyst has deposited thereon in excess of 10,000 ppm vanadium equivalents of contaminants.
Claim 8
Dependent Claim
40 words
A process as in claim 5 wherein the cracking catalyst contains from about 1 to about 60% by total weight of a zeolitic component and has deposited thereon from between about 20,000 to about 50,000 ppm vanadium equivalents of contaminants.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |