Process for refining crude oil

Details Process for refining crude oil Process for refining crude oil

1977-01-24

1978-07-18

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

204167, 204190, 260428, 260418, 210 21, C11B 306

Patent

active

041015630

ABSTRACT:
An improved process for the refining of crude oil selected from the group of fats, animal and vegetable oils. The crude oil is reacted with aqueous alkali to produce a treated oil with reduced acidic content but containing finely dispersed, liquid-state alkali metal soaps, and a bulk aqueous alkali phase. The bulk alkali phase is separated from the treated oil. The treated oil is subjected to electrofiltration by passage through a bed of dielectric particulate solids having open continuous, but tortuous flow paths, which are interposed within a d.c. electric field having a gradient of at least 20 kv/in whereby the alkali metal soaps adhere in a liquid state to the particulate solids and provide a purified oil with a substantially reduced content of the alkali metal soaps. The purified oil is sent to a subsequent utilization. A dielectric wash liquid is periodically flowed through the bed to remove the priorly adhering finely dispersed alkali metal soaps from the particulate solids.

REFERENCES:
patent: 3356603 (1967-12-01), Drew
patent: 3575952 (1971-04-01), Morris et al.
patent: 3673070 (1972-06-01), Wiley
patent: 3799857 (1974-03-01), Franse
patent: 3847774 (1974-11-01), Jarrell

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