Method of recovering liquid and gaseous products of oil shale

Details Method of recovering liquid and gaseous products of oil shale Method of recovering liquid and gaseous products of oil shale

1976-01-30

1977-12-20

Novosad, Stephen I.

Mining or in situ disintegration of hard material

Tunnel recovery of fluid material

166259, 299 13, E21B 4324, E21C 4110

Patent

active

040637808

ABSTRACT:
A method of processing oil shale to recover liquid or gaseous products which comprises constructing longitudinally sloping trenches excavated in a mineral deposit which is relatively impermeable in relation to the crushed oil shale, placing the crushed shale into the sloping trenches and covering same with a compacted layer of clay or other relatively impermeable and essentially inorganic minerals and thereafter igniting the oil shale at the upper end of the trench. Air is introduced at points along the upper end of the trenches and as the retorting zone moves longitudinally downward in the sloping trenches the liquid and gaseous materials are withdrawn at points located at the lower end of the trenches.

REFERENCES:
patent: 1913395 (1933-06-01), Karrick
patent: 1919636 (1933-07-01), Karrick
patent: 3291215 (1966-12-01), Nichols
patent: 3434757 (1969-03-01), Prats
patent: 3915498 (1975-10-01), Burton et al.
patent: 3917344 (1975-11-01), Janssen et al.
patent: 3980339 (1976-09-01), Heald et al.

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