US4222856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for promoting regeneration of a catalyst in a fluidized regenerator
Assignee: AMBUR CHEMICAL COMPANY Inc A CORP OF
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Filing: 1977-06-09
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Granted: 1980-09-16
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Expires: 1997-06-09
Abstract
Abstract A promoter comprising from about 500 ppm to about 1% of a Group V, Group VI, or Group VIII metal on a support is combined with a hydrocarbon conversion catalyst under fluidizing conditions, in an effective proportion, to enhance the removal of carbonaceous material from the catalyst. Typically, the promoter is a mixture of platinum and palladium supported on gamma alumina and is included in a fluidized catalytic cracking (FCC) unit in a sufficient proportion to provide from about 0.05 to about 50 ppm metal based on the weight of the catalyst.
Inventors
- 👤 John H. Hansel
- 👤 Robert G. Linton
- 👤 Charles W. Stanger, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:22
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
141 words
In a fluid catalytic cracking unit wherein a hydrocarbon feedstock is contacted in a reactor with a mass of a fluidized, finely divided zeolite catalyst, and converted to a hydrocarbon product, the hydrocarbon product separated from the catalyst, and the catalyst sent to a regenerator for effecting removal of carbonaceous material deposited on said catalyst, the improvement for enhancing the removal of carbonaceous material from the catalyst while in said regenerator without substantially affecting the performance of the catalyst which comprises: fluidizing in physical admixture with the catalyst, finely divided frangible promoter particles comprising from about 500 parts per million to about 1% of a metal selected from the group consisting of platinum, palladium and mixtures thereof carried on a gamma alumina support in an amount to provide from about 0.15-50 parts per million metal by weight of the zeolite catalyst.
Claim 2
Dependent Claim
141 words
In a fluid catalytic cracking unit wherein a hydrocarbon feedstock is contacted in a reactor with a mass of a fluidized, finely divided zeolite catalyst, and converted to a hydrocarbon product, the hydrocarbon product separated from the catalyst, and the catalyst sent to a regenerator for effecting removal of carbonaceous material deposited on said catalyst, the improvement for enhancing the removal of carbonaceous material from the catalyst while in said regenerator without substantially affecting the performance of the catalyst which comprises: fluidizing in physical admixture with the catalyst, finely divided frangible promoter particles comprising from about 500 parts per million to about 1% of a metal selected from the group consisting of platinum, palladium and mixtures thereof carried on a gamma alumina support in an amount to provide from about 0.15-50 parts per million metal by weight of the zeolite catalyst.
Claim 3
Dependent Claim
30 words
The process of claim 1 wherein said promoter is included in a proportion sufficient to provide from about 0.1 to 1 ppm metal based on the weight of the catalyst.
Claim 4
Dependent Claim
18 words
The process of claim 2 wherein said metal in said promoter is a mixture of platinum and palladium.
Claim 5
Dependent Claim
19 words
The process of claim 2 wherein the particle size of the promoter is from about 20 to 80 microns.
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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) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |