Process for retorting oil shale

Details Process for retorting oil shale Process for retorting oil shale

1975-12-29

1977-08-02

Gantz, Delbert E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

201 22, 201 32, 201 40, C10G 102

Patent

active

040394271

ABSTRACT:
A process for the recovery of oil from oil-bearing shale and for employing the oil-depleted shale as a combustible heat source. The oil-bearing shale is charged on a traveling grate to form a burden. A bed of oil-depleted shale having uncombusted carbon and hydrocarbons is provided, and those uncombusted materials are combusted to raise the temperature of the bed to above about 1000.degree. F. A reducing atmosphere is passed through the oil-depleted and combusted bed to raise the temperature of the reducing atmosphere. The heated reducing atmosphere is then passed through the burden to raise the temperature of the oil shale to at least 800.degree. F. and to thereby educt oil from the oil shale. In another embodiment, the combusted oil-depleted material is layered onto the oil-bearing and the reducing atmosphere is passed sequentially through the oil-depleted and oil-bearing material.

REFERENCES:
patent: 3325395 (1967-06-01), Ban
patent: 3441480 (1969-04-01), Ban
patent: 3483115 (1969-12-01), Haddad et al.
patent: 3516787 (1970-06-01), Van Nordstrand
patent: 3560368 (1971-02-01), Rowland et al.

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