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US4174272A
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US
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Catalytic cracking of hydrocarbons
Assignee: Mobil Oil AS
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Filing: 1978-01-13
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Granted: 1979-11-13
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Expires: 1998-01-13
Abstract
Abstract Non-hydrogenative endothermic catalytic cracking of hydrocarbon, particularly petroleum, fractions at relatively low pressures and high temperatures in a system where the endothermic heat required for cracking is supplied by catalyst as the heat transfer medium, which catalyst has been heated by burning coke deposited on the catalyst during cracking; and wherein a decomposable compound of platinum, palladium, ruthenium, iridium, osmium, rhodium or rhenium, is introduced into contact with the cracking catalyst during said process.
Inventors
- 👤 Albert B. Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:23
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/061; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
232 words
A method for preparing, in situ, an inventory comprising a carbon monoxide oxidation promoting metal and a cracking catalyst for use in a fluid catalytic cracking process for non-hydrogenative cracking of hydrocarbons, which cracking process comprises cofeeding active hot solid cracking catalyst and crackable hydrocarbon feed to a cracking zone; cracking said feed to lighter hydrocarbons while depositing coke on said catalyst; disengaging said coked catalyst from said lighter hydrocarbon products; passing said coked catalyst to a regeneration zone; passing an oxygen containing gas upwardly through said regeneration zone and at sufficient velocity to fluidize said catalyst contained therein, whereby maintaining therein a fluidized bed of catalyst having an ascending temperature profile; retaining said catalyst in said regeneration zone at a temperature and for a time sufficient to burn coke off said catalyst, heat and reactivate such, and produce a flue gas comprising carbon oxides; and returning said reactivated, heated catalyst to said cracking zone; said method comprising adding, during said process into proximity to said cracking catalyst, an amount of a platinum group metal as a decomposable compound thereof, said amount being effective to increase the temperature of said fluidized bed in said regeneration zone and ineffective to substantially disadvantageously increase the production of coke in said cracking zone, thereby forming said inventory comprising said promoter metal in a proportion of 0.1 to 100 parts per million based on total catalyst.
Claim 2
Independent Claim
232 words
A method for preparing, in situ, an inventory comprising a carbon monoxide oxidation promoting metal and a cracking catalyst for use in a fluid catalytic cracking process for non-hydrogenative cracking of hydrocarbons, which cracking process comprises cofeeding active hot solid cracking catalyst and crackable hydrocarbon feed to a cracking zone; cracking said feed to lighter hydrocarbons while depositing coke on said catalyst; disengaging said coked catalyst from said lighter hydrocarbon products; passing said coked catalyst to a regeneration zone; passing an oxygen containing gas upwardly through said regeneration zone and at sufficient velocity to fluidize said catalyst contained therein, whereby maintaining therein a fluidized bed of catalyst having an ascending temperature profile; retaining said catalyst in said regeneration zone at a temperature and for a time sufficient to burn coke off said catalyst, heat and reactivate such, and produce a flue gas comprising carbon oxides; and returning said reactivated, heated catalyst to said cracking zone; said method comprising adding, during said process into proximity to said cracking catalyst, an amount of a platinum group metal as a decomposable compound thereof, said amount being effective to increase the temperature of said fluidized bed in said regeneration zone and ineffective to substantially disadvantageously increase the production of coke in said cracking zone, thereby forming said inventory comprising said promoter metal in a proportion of 0.1 to 100 parts per million based on total catalyst.
Claim 3
Dependent Claim
17 words
The method described in claim 1 wherein said hot solid cracking catalyst comprises a crystalline aluminosilicate zeolite.
Claim 4
Dependent Claim
32 words
The method described in claim 1 wherein the platinum group metal is platinum and the amount added is from 0.1 to 10 parts per million parts of said hot solid cracking catalyst.
Claim 5
Dependent Claim
37 words
The method described in claim 1 wherein said platinum group metal is added as a concentrate deposited on cracking catalyst, said addition being made to hot solid cracking catalyst containing less or no platinum group metal component.
Claim 6
Dependent Claim
20 words
The method described in claim 2 wherein said platinum group metal is added as a concentrate deposited on cracking catalyst.
Claim 7
Independent Claim
232 words
A method for preparing, in situ, an inventory comprising a carbon monoxide oxidation promoting metal and a cracking catalyst for use in a fluid catalytic cracking process for non-hydrogenative cracking of hydrocarbons, which cracking process comprises cofeeding active hot solid cracking catalyst and crackable hydrocarbon feed to a cracking zone; cracking said feed to lighter hydrocarbons while depositing coke on said catalyst; disengaging said coked catalyst from said lighter hydrocarbon products; passing said coked catalyst to a regeneration zone; passing an oxygen containing gas upwardly through said regeneration zone and at sufficient velocity to fluidize said catalyst contained therein, whereby sustaining therein a fluidized bed of catalyst having an ascending temperature profile; retaining said catalyst in said regeneration zone at a temperature and for a time sufficient to burn coke off said catalyst, heat and reactivate such, and produce a flue gas comprising carbon oxides; and returning said reactivated, heated catalyst to said cracking zone; said method comprising adding, during said process into proximity to said cracking catalyst, an amount of a platinum group metal as a decomposable compound thereof, said amount being effective to catalytically combust carbon monoxide in said fluidized bed in said regeneration zone and ineffective to substantially disadvantageously increase the production of coke in said cracking zone, thereby forming said inventory comprising said promoter metal in an amount less than 100 parts per million based on total catalyst.
Claim 8
Independent Claim
232 words
A method for preparing, in situ, an inventory comprising a carbon monoxide oxidation promoting metal and a cracking catalyst for use in a fluid catalytic cracking process for non-hydrogenative cracking of hydrocarbons, which cracking process comprises cofeeding active hot solid cracking catalyst and crackable hydrocarbon feed to a cracking zone; cracking said feed to lighter hydrocarbons while depositing coke on said catalyst; disengaging said coked catalyst from said lighter hydrocarbon products; passing said coked catalyst to a regeneration zone; passing an oxygen containing gas upwardly through said regeneration zone and at sufficient velocity to fluidize said catalyst contained therein, whereby sustaining therein a fluidized bed of catalyst having an ascending temperature profile; retaining said catalyst in said regeneration zone at a temperature and for a time sufficient to burn coke off said catalyst, heat and reactivate such, and produce a flue gas comprising carbon oxides; and returning said reactivated, heated catalyst to said cracking zone; said method comprising adding, during said process into proximity to said cracking catalyst, an amount of a platinum group metal as a decomposable compound thereof, said amount being effective to catalytically combust carbon monoxide in said fluidized bed in said regeneration zone and ineffective to substantially disadvantageously increase the production of coke in said cracking zone, thereby forming said inventory comprising said promoter metal in an amount less than 100 parts per million based on total catalyst.
Claim 9
Dependent Claim
17 words
The method described in claim 6 wherein said hot solid cracking catalyst comprises a crystalline aluminosilicate zeolite.
Claim 10
Dependent Claim
32 words
The method described in claim 6 wherein the platinum group metal is platinum and the amount added is from 0.1 to 10 parts per million parts of said hot solid cracking catalyst.
Claim 11
Dependent Claim
37 words
The method described in claim 6 wherein said platinum group metal is added as a concentrate deposited on cracking catalyst, said addition being made to hot solid cracking catalyst containing less or no platinum group metal component.
Claim 12
Dependent Claim
20 words
The method described in claim 7 wherein said platinum group metal is added as a concentrate deposited on cracking catalyst.
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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) | 1982-11-12 | 1983-05-14 | 1983-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-12 | 1987-05-14 | 1987-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-12 | 1991-05-14 | 1991-11-13 | $7700.00 | Window Closed / Lapsed |