Method of recovering oil and water from in situ oil shale retort

Details Method of recovering oil and water from in situ oil shale retort Method of recovering oil and water from in situ oil shale retort

1976-04-02

1977-06-14

Purser, Ernest R.

Mining or in situ disintegration of hard material

Tunnel recovery of fluid material

166256, 166265, 166302, 55 80, E21C 4110, E21B 4300

Patent

active

040293602

ABSTRACT:
A technique is described for reducing the content of oil and water in the flue gas recovered from the bottom of an underground in situ oil shale retort. In such a retort air is passed downwardly to sustain a combustion zone for retorting oil which is recovered at the bottom. Flue gas recovered from the bottom of the retort contains water vapor and oil and water aerosols. These are removed from the flue gas by passing it a substantial distance upwardly through cool overburden so that the flue gas is cooled below its dew point so that water condenses in the vertical conduit and aerosols are dropped out on the walls. The oil and water are recovered at the bottom of the conduit and stored in an underground sump.

REFERENCES:
patent: 947608 (1910-01-01), Betts
patent: 1269747 (1918-06-01), Rogers
patent: 2990691 (1961-07-01), Glasgow
patent: 3001776 (1961-09-01), Poolen
patent: 3454958 (1969-07-01), Parker
patent: 3460867 (1969-08-01), Cameron et al.

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