Mineral oils: processes and products – Products and compositions – Lubricating oils
Patent
1980-11-19
1983-03-22
Gantz, Delbert E.
Mineral oils: processes and products
Products and compositions
Lubricating oils
208 8R, 201 12, 201 31, C10G 100
Patent
active
043774652
ABSTRACT:
Disclosed is an improved method and apparatus for the retorting of oil shale and the formation of spent oil shale having improved cementation properties. The improved method comprises passing feed comprising oil shale to a contacting zone wherein the feed oil shale is contacted with heat transfer medium to heat said shale to retorting temperature. The feed oil shale is substantially retorted to form fluid material having heating value and forming partially spent oil shale containing carbonaceous material. At least a portion of the partially spent oil shale is passed to a combustion zone wherein the partially spent oil shale is contacted with oxidizing gas comprising oxygen and steam to substantially combust carbonaceous material forming spent oil shale having improved cementation properties.
REFERENCES:
patent: 2844521 (1958-07-01), Jahnig
patent: 3655518 (1972-04-01), Schmalfeld et al.
patent: 4105502 (1978-08-01), Choi
Caldarola Glenn
Gantz Delbert E.
Magidson William H.
McClain William T.
Standard Oil Company (Indiana)
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