US3617472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of shale oil
Assignee: Texaco Inc
•
Filing: 1969-12-31
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Granted: 1971-11-02
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Expires: 1989-12-31
Abstract
Abstract Process for recovering shale oil from oil shale by retorting with synthesis gas, i.e., a mixture of carbon monoxide and hydrogen, generated by partial combustion of byproduct gas with oxygen, wherein part of the heat required for retorting is provided by the hot synthesis gas, and additional hydrogen is produced in the oil shale retort by the water-gas shift reaction, the shale acting as a catalyst; and the process being selfsufficient in requiring no external source of water.
Inventors
- 👤 Warren G Schlinger
- 👤 Dale R Jesse
- 👤 Joseph P Tassoney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:12
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/06; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/36
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
24 words
The process of clAim 1 with the added steps of introducing H2O into said shale retorting zone and withdrawing water from said separating zone.
Claim 2
Dependent Claim
28 words
The process of claim 2 wherein said H2O is introduced in the amount of about 0.01 to 0.6 tons of H2O per ton of raw oil shale treated.
Claim 3
Dependent Claim
32 words
The process of claim 1 wherein sufficient synthesis gas is introduced into said shale retorting zone to provide 1,000 to 20, 000 s.c.f. of H2+CO per ton of raw oil shale treated.
Claim 4
Dependent Claim
66 words
The process of claim 1 wherein said synthesis gas is generated at a pressure substantially equivalent to the pressure in said shale retorting zone and is introduced into said shale retorting zone and is introduced into said shale retorting zone at a temperature in the range of about 800* to about 1,000* F. and at a pressure in the range of about 300 to 1,000 p.s.i.g.
Claim 5
Dependent Claim
26 words
The process of claim 1 wherein said shale retorting zone comprises a tubular retort, and said raw oil shale is pulverized and slurried with shale oil.
Claim 6
Dependent Claim
25 words
The process of claim 1 with the added step of cooling said synthesis gas in a quench zone with water obtained from said separating zone.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |