US4664779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cracking catalyst restoration with aluminum compounds
Assignee: Phillips Petroleum Co
•
Filing: 1986-03-17
•
Granted: 1987-05-12
•
Expires: 2006-03-17
Abstract
Abstract A method to restore the activity of a cracking catalyst which has been deactivated at least partially by metals contamination which involves contacting the cracking catalyst with an aluminum containing treating agent.
Inventors
- 👤 Brent J. Bertus
- 👤 Dwight L. McKay
- 👤 H. Wayne Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:48
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/90; B01J2229/00; B01J2229/30; B01J2229/34; B01J2229/40; Y; Y10; Y10S; Y10S502/00; Y10S502/521
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
80 words
A process comprising (a) contacting a zeolite-containing cracking catalyst with an aluminum-containing treating agent so as to deposit thereon a passivating amount of aluminum, said aluminum-containing treating agent being represented by the formula ##STR3## where R is a hydrocarbyl containing from 1 to about 20 carbon atoms and X is selected from the group consisting of oxygen and sulfur and at least one X is sulfur; and (b) contactng a hydrocarbon feedstock with the contacted cracking catalyst under cracking conditions.
Claim 2
Dependent Claim
80 words
A process comprising (a) contacting a zeolite-containing cracking catalyst with an aluminum-containing treating agent so as to deposit thereon a passivating amount of aluminum, said aluminum-containing treating agent being represented by the formula ##STR3## where R is a hydrocarbyl containing from 1 to about 20 carbon atoms and X is selected from the group consisting of oxygen and sulfur and at least one X is sulfur; and (b) contactng a hydrocarbon feedstock with the contacted cracking catalyst under cracking conditions.
Claim 3
Dependent Claim
24 words
A process as in claim 1 wherein the cracking catalyst contains from about 1 to about 60 percent by weight of a zeolitic component.
Claim 4
Dependent Claim
21 words
A process as in claim 2 wherein the cracking catalyst has deposited thereon in excess of 3000 vanadium equivalents of contaminants.
Claim 5
Dependent Claim
21 words
A process as in claim 3 wherein the cracking catalyst has deposited thereon between 10,000 and 50,000 vanadium equivalents of contaminants.
Claim 6
Dependent Claim
21 words
A process as in claim 4 wherein the cracking catalyst has deposited thereon between 20,000 and 50,000 vanadium equivalents of contaminants.
Claim 7
Dependent Claim
40 words
A process as in claim 1 further characterized in that said aluminum-containing treating agent is represented by the formula ((RO 2 )PS 2 ) 3 Al, wherein R is a hydrocarbyl group having from 1 to about 20 carbon atoms.
Claim 8
Dependent Claim
13 words
A process as in claim 6 further characterized in that R equals n-propyl.
Claim 9
Dependent Claim
83 words
A cracking process utilizing a cyclic flow of catalyst between a fluidized cracking zone and a regeneration zone, said catalyst comprising a zeolite, wherein a hydrocarbon feedstock having an aluminum-containing treating agent incorporated therein is introduced into the fluidized cracking zone, said aluminum-containing treating agent being represented by the formula ##STR4## where R is a hydrocarbyl containing from 1 to about 20 carbon atoms and X is selected from the group consisting of oxygen and sulfur and at least one X is sulfur.
Claim 10
Dependent Claim
83 words
A cracking process utilizing a cyclic flow of catalyst between a fluidized cracking zone and a regeneration zone, said catalyst comprising a zeolite, wherein a hydrocarbon feedstock having an aluminum-containing treating agent incorporated therein is introduced into the fluidized cracking zone, said aluminum-containing treating agent being represented by the formula ##STR4## where R is a hydrocarbyl containing from 1 to about 20 carbon atoms and X is selected from the group consisting of oxygen and sulfur and at least one X is sulfur.
Claim 11
Dependent Claim
40 words
A process as in claim 8 further characterized in that the aluminum-containing treating agent is represented by the formula ((RO) 2 PS 2 ) 3 Al, wherein R is a hydrocarbyl group having from 1 to about 20 carbon atoms.
Claim 12
Dependent Claim
33 words
A process as in claim 9 wherein the hydrocarbon feedstock is characterized by a total metals contaminant in the range of 40-100 ppm and an aluminum concentration in the range of 1-100 ppm.
Claim 13
Dependent Claim
33 words
A process as in claim 9 wherein the hydrocarbon feedstock is characterized by a total metals contaminant in the range of 100-200 ppm and an aluminum concentration in the range of 10-250 ppm.
Claim 14
Dependent Claim
33 words
A process as in claim 9 wherein the hydrocarbon feedstock is characterized by a total metals contaminant in the range of 200-300 ppm and an aluminum concentration in the range of 25-500 ppm.
Claim 15
Dependent Claim
33 words
A process as in claim 9 wherein the hydrocarbon feedstock is characterized by a total metals contaminant in the range of 300-800 ppm and an aluminum concentration in the range of 50-1000 ppm.
Claim 16
Dependent Claim
13 words
A process as in claim 9 further characterized in that R equals n-propyl.
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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) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |