US4179357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective hydrocracking process for middle distillate
Assignee: Honeywell UOP LLC
•
Filing: 1978-07-27
•
Granted: 1979-12-18
•
Expires: 1998-07-27
Abstract
Abstract A process for the selective production of middle distillate hydrocarbons from heavier hydrocarbon feed stocks utilizing a hydrocracking catalyst comprising an alumina-zeolite support, a rare earth exchange metal component and at least one metal component selected from Group VIB or Group VIII and having a nominal particle diameter of less than 0.04 inches.
Inventors
- 👤 Mark J. O'Hara
- 👤 Russell W. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:30
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; C10G47/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
95 words
In a process for the hydrocracking of hydrocarbon feed stock having an initial boiling point of at least about 650° F. in contact with a catalyst comprising an alumina-zeolite support, a rare earth exchange metal component, and a Group VIB or Group VIII metal component, the method of improving the hydrocracking selectivity of said catalyst with respect to the formation of middle distillate hydrocarbons boiling in the range of about 300° F. to about 650° F., which comprises employing said catalyst in the form of particles having a nominal diameter of less than 0.04 inches.
Claim 2
Dependent Claim
95 words
In a process for the hydrocracking of hydrocarbon feed stock having an initial boiling point of at least about 650° F. in contact with a catalyst comprising an alumina-zeolite support, a rare earth exchange metal component, and a Group VIB or Group VIII metal component, the method of improving the hydrocracking selectivity of said catalyst with respect to the formation of middle distillate hydrocarbons boiling in the range of about 300° F. to about 650° F., which comprises employing said catalyst in the form of particles having a nominal diameter of less than 0.04 inches.
Claim 3
Dependent Claim
10 words
The process of claim 1 wherein said zeolite is faujasite.
Claim 4
Dependent Claim
21 words
The process of claim 1 wherein said feed stock has a boiling range from about 650° F. to about 1050° F.
References Cited (Backward Citations)
US4040944A
Cited
US3562800A
Cited
US3674680A
Cited
US3654138A
Cited
US3990964A
Cited
US3980552A
Cited
US4098683A
Cited
US4141860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-17 | 1983-06-18 | 1983-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-17 | 1987-06-18 | 1987-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-17 | 1991-06-18 | 1991-12-18 | $7700.00 | Window Closed / Lapsed |