US4390411A
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US
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Recovery of hydrocarbon values from low organic carbon content carbonaceous materials via hydrogenation and supercritical extraction
Assignee: Phillips Petroleum Co
•
Filing: 1981-04-02
•
Granted: 1983-06-28
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Expires: 2001-04-02
Abstract
Abstract Hydrocarbon values are recovered from low organic carbon content materials via treatment with hydrogen and extraction with supercritical solvents.
Inventors
- 👤 James Scinta
- 👤 Peter J. Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:03
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/02; B01D11/0203; C; C10; C10G; C10G1/00; C10G1/06; C10G1/065; Y; Y10; Y10S; Y10S208/00; Y10S208/952
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
74 words
The process of recovering hydrocarbon values from carbonaceous materials selected from the group consisting of oil shale, and tar sands and mixtures thereof comprising: (a) simultaneously contacting the material with hydrogen gas while extracting at least one hydrocarbon fraction with one or more organic solvents under supercritical pressure and at temperatures between the critical temperature of the solvent and about 100° C. above its critical temperature, and (b) recovering at least one hydrocarbon fraction.
Claim 2
Dependent Claim
74 words
The process of recovering hydrocarbon values from carbonaceous materials selected from the group consisting of oil shale, and tar sands and mixtures thereof comprising: (a) simultaneously contacting the material with hydrogen gas while extracting at least one hydrocarbon fraction with one or more organic solvents under supercritical pressure and at temperatures between the critical temperature of the solvent and about 100° C. above its critical temperature, and (b) recovering at least one hydrocarbon fraction.
Claim 3
Dependent Claim
17 words
The process of claim 1 wherein step (a) is conducted in the presence of a hydrogen donor.
Claim 4
Dependent Claim
11 words
The process of claim 2 wherein the hydrogen donor is tetralin.
Claim 5
Dependent Claim
21 words
The process of claim 1, or 3 wherein the low organic carbon content material is an oil shale or tar sand.
Claim 6
Dependent Claim
27 words
The process of claim 1, or 3 wherein the organic solvent is selected from C 6 -C 12 aromatic compounds and C 5 -C 11 acyclic compounds.
Claim 7
Dependent Claim
20 words
The process of claim 1, or 3, wherein the carbonaceous material is oil shale and the organic solvent is n-heptane.
Claim 8
Dependent Claim
20 words
The process of claim 1, or 3, wherein the carbonaceous material is oil shale and the organic solvent is toluene.
Claim 9
Dependent Claim
25 words
The process of claim 1, or 3, wherein the carbonaceous material is oil shale and the organic solvent comprises a mixture of cyclohexane and toluene.
References Cited (Backward Citations)
US2270674A
Cited
GB493307A
Cited
US3474863A
Cited
US3607717A
Cited
US3850783A
Cited
US3891403A
Cited
US3922215A
Cited
US4019975A
Cited
US3970541A
Cited
US4151068A
Cited
US4108760A
Cited
US4083769A
Cited
US4155832A
Cited
US4166022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-27 | 1986-12-27 | 1987-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-27 | 1990-12-27 | 1991-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-27 | 1994-12-27 | 1995-06-28 | $7700.00 | Window Closed / Lapsed |