US3666657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil stabilizing sequential hydrocracking and hydrogenation treatment
Assignee: Sunoco Inc R&M
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Filing: 1970-11-16
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Granted: 1972-05-30
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Expires: 1990-11-16
Abstract
Abstract A process of improving the quality stability of hydrocracked oils by hydrogenating such oils subsequent to the hydrocracking treatment. The hydrocracking conditions comprise a temperature of from 700* to 900* F. and preferably from 700* to 800* F. and a pressure of at least about -500 psi and preferably at least about 1,500 psi over a sulfided mixture of Group VI B metal and Group VIII metal as a catalyst. The hydrogenation conditions comprise a temperature of from about 600* and preferably 625* to 675* F. a pressure of at least about 3,000 psi and the same catalysts as used for the hydrocracking operation.
Inventors
- 👤 Sheldon L Thompson
- 👤 Rene F Kress
- 👤 Albert T Olenzak
- 👤 Ib Steinmetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:27
CPC Classifications
C; C10; C10G; C10G47/00; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
19 words
The process of claim 1 wherein the hydrogenation step is carried out at from about 625* to 675* F.
Claim 2
Dependent Claim
16 words
The process of claim 2 wherein the hydrocracking catalyst composition is a nickel sulfide-tungsten sulfide combination.
Claim 3
Dependent Claim
15 words
The process of claim 3 wherein the hydrogenation catalyst is a nickel sulfide-molybdenum sulfide combination.
Claim 4
Dependent Claim
15 words
The process of claim 4 wherein the hydrogenation catalyst is a nickel sulfide-tungsten sulfide combination.
Claim 5
Dependent Claim
18 words
The process of claim 4 wherein the liquid hourly space velocity in the hydrogenation step is about 0.5.
Claim 6
Dependent Claim
18 words
The process of claim 5 wherein the liquid hourly space velocity in the hydrogenating step is about 0.5.
References Cited (Backward Citations)
US2915452A
Cited
US2967147A
Cited
GB1006508A
Cited
US3147206A
Cited
US3285848A
Cited
US3444071A
Cited
US3431198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |