Process for treating hot shale oil effluent from a retort

Details Process for treating hot shale oil effluent from a retort Process for treating hot shale oil effluent from a retort

1978-03-29

1980-01-01

Gantz, Delbert E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

208251R, C10G 100, C10G 3106

Patent

active

041815963

ABSTRACT:
Oil shale retort effluent having a temperature of at least 650.degree. F. (343.degree. C.) is cooled, if necessary, to within the range from 600.degree.-800.degree. F. (316.degree.-427.degree. C.), separated into a liquid phase and a vapor phase, and the liquid phase is maintained within that range for 1 to 120 minutes to form a liquid product having a pour point less than 40.degree. F. (4.4.degree. C.). When the effluent contains at least one contaminant selected from soluble iron and soluble arsenic and is withdrawn from the retort at a temperature of at least 300.degree. F. (149.degree. C.), maintaining the liquid phase at a temperature from 300.degree.-800.degree. F. (149.degree.-427.degree. C.) will cause formation of (1) a precipitate containing iron, arsenic or both and (2) a liquid product having a reduced contaminant content.

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