Patent US4342641A successfully refreshed from Google Patents.
US4342641A
Expired / Lapsed
US
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Maximizing jet fuel from shale oil
Assignee: HRI Inc
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Filing: 1980-11-18
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Granted: 1982-08-03
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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 12:56
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.
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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) | 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 |