US4342641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Maximizing jet fuel from shale oil
Assignee: HRI Inc
•
Filing: 1980-11-18
•
Granted: 1982-08-03
•
Expires: 2000-11-18
Abstract
Abstract Improved method for maximizing jet fuel from shale oil involves hydrotreating the treated oil at a temperature of about 600 DEG -650 DEG F. in the presence of a catalyst having a relatively low metal content and then hydrotreating the oil at a temperature in excess of about 800 DEG F. in the presence of a catalyst having a relatively high metal content. A 480 DEG F. minus boiling point fraction fractionated from the foregoing process can meet JP-4 jet fuel specifications. Hydrocracking the 480 DEG F. plus boiling point fraction results in substantial additional quantities of jet fuel.
Inventors
- 👤 Henry E. Reif
- 👤 Peter Maruhnic
- 👤 Michael C. Chervenak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:07
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/02; C10G65/10; C10G2400/00; C10G2400/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
110 words
In the process of hydrotreating crude shale oil the improvement which comprises: (a) contacting crude shale oil at a temperature of up to about 650° F. with hydrogen and a hydrogenation catalyst comprising about 1-3 wt. % nickel and about 2-10 wt. % molybdenum; and (b) contacting the treated oil of step (a) at a temperature in excess of about 800° F. with hydrogen and a hydrogenation catalyst having a higher metal content than the catalyst of step (a), said higher metal content catalyst comprising about 1.5-5 wt. % nickel and about 8-15 wt. % molybdenum; whereby steps (a) and (b) produce, after fractionation, a jet fuel meeting JP-4 specifications.
Claim 2
Dependent Claim
110 words
In the process of hydrotreating crude shale oil the improvement which comprises: (a) contacting crude shale oil at a temperature of up to about 650° F. with hydrogen and a hydrogenation catalyst comprising about 1-3 wt. % nickel and about 2-10 wt. % molybdenum; and (b) contacting the treated oil of step (a) at a temperature in excess of about 800° F. with hydrogen and a hydrogenation catalyst having a higher metal content than the catalyst of step (a), said higher metal content catalyst comprising about 1.5-5 wt. % nickel and about 8-15 wt. % molybdenum; whereby steps (a) and (b) produce, after fractionation, a jet fuel meeting JP-4 specifications.
Claim 3
Dependent Claim
39 words
A process according to claim 1 wherein after fractionating out a jet fuel the remaining oil is hydrocracked whereby the total amount of jet fuel produced per barrel of crude shale oil is in excess of 100 volume %.
Claim 4
Dependent Claim
19 words
A process according to claim 1 wherein the contacting temperature of step (b) is about at least 825° F.
Claim 5
Dependent Claim
15 words
A process according to claim 1 wherein the hydrogenation catalysts are supported on porous supports.
Claim 6
Dependent Claim
11 words
A process according to claim 4 wherein the supports comprise alumina.
References Cited (Backward Citations)
US3092567A
Cited
US3175970A
Cited
US3236764A
Cited
US3369998A
Cited
US3779903A
Cited
US3546103A
Cited
US3594307A
Cited
US3717571A
Cited
US3850746A
Cited
US3860510A
Cited
US3954603A
Cited
US4022682A
Cited
US4133745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-02 | 1986-02-01 | 1986-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-02 | 1990-02-01 | 1990-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-02 | 1994-02-01 | 1994-08-03 | $7700.00 | Window Closed / Lapsed |