US4335021A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst regeneration
Assignee: Phillips Petroleum Co
•
Filing: 1980-02-04
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Granted: 1982-06-15
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Expires: 2000-02-04
Abstract
Abstract The regeneration of cracking catalyst containing both manganese and antimony in a temperature range of 1260 DEG -1280 DEG F. has been found to result in unexpected sharp maximum of the CO2/CO ratio in the regenerator off-gas.
Inventors
- 👤 Dwight L. McKay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:11
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B; B01; B01J; B01J23/00; B01J23/16; B01J23/32; B01J23/34; B01J23/90; B01J23/92; B01J29/00; B01J29/90
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
69 words
In a combustion process wherein carbonaceous material on silica or silica/alumina base cracking catalyst particles containing both manganese and antimony is at least partly removed by contacting the catalyst particles with a free oxygen containing gas the improvement comprising carrying out said combustion process at a temperature in the range of 1260° to 1280° F. in order to achieve a high CO 2 /CO ratio in the combustion gas.
Claim 2
Dependent Claim
69 words
In a combustion process wherein carbonaceous material on silica or silica/alumina base cracking catalyst particles containing both manganese and antimony is at least partly removed by contacting the catalyst particles with a free oxygen containing gas the improvement comprising carrying out said combustion process at a temperature in the range of 1260° to 1280° F. in order to achieve a high CO 2 /CO ratio in the combustion gas.
Claim 3
Dependent Claim
19 words
A process in accordance with claim 1 wherein said catalyst is a zeolite containing rare earth containing cracking catalyst.
Claim 4
Dependent Claim
23 words
A process in accordance with claim 1 wherein said cracking catalyst contains manganese and antimony in a weight ratio of 10:1 to 1:10.
Claim 5
Dependent Claim
35 words
A cracking catalyst useful for the cracking of hydrocarbons in the absence of added hydrogen and being based upon silica or silica/alumina containing both manganese and antimony in a weight ratio of 2:1 to 1:2.
Claim 6
Dependent Claim
35 words
A cracking catalyst useful for the cracking of hydrocarbons in the absence of added hydrogen and being based upon silica or silica/alumina containing both manganese and antimony in a weight ratio of 2:1 to 1:2.
Claim 7
Dependent Claim
34 words
A catalyst in accordance with claim 4 comprising a zeolite modified silica or silica/alumina material being rare earth ion exchanged and containing both manganese and antimony in a weight ratio of 2:1 to 1:2.
References Cited (Backward Citations)
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Cited
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US3696025A
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US3808121A
Cited
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US4083807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-14 | 1985-12-14 | 1986-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-14 | 1989-12-14 | 1990-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-14 | 1993-12-14 | 1994-06-15 | $7700.00 | Window Closed / Lapsed |