System for fuel and products of oil shale retort

Details System for fuel and products of oil shale retort System for fuel and products of oil shale retort

1974-07-26

1977-03-29

Purser, Ernest R.

Mining or in situ disintegration of hard material

Tunnel recovery of fluid material

166256, 166267, E21C 4110, E21B 4300

Patent

active

040145751

ABSTRACT:
An underground room in substantially undisturbed shale is filled with fragmented oil shale particles for in situ retorting. A comprehensive system is provided for feeding air to the top of the retort and recovering oil and flue gas from the bottom of the retort. The oil is separated from admixed water and both are recovered. Flue gas is withdrawn from the bottom of the retort, scrubbed clean and a portion may be recycled through the retort while another portion is vented or burned in a turbine. Means are also provided for passing scrubbed gas through a second spent shale retort prior to venting, burning or recycle.

REFERENCES:
patent: 1269747 (1918-06-01), Rogers
patent: 1919636 (1933-07-01), Karrick
patent: 2481051 (1949-09-01), Uren
patent: 2801089 (1957-07-01), Scott, Jr.
patent: 3380913 (1968-04-01), Henderson
patent: 3454958 (1969-07-01), Parker
patent: 3548938 (1970-12-01), Parker
patent: 3573194 (1971-03-01), Hopper et al.

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