Method of separating oil from oil-containing liquid

Details Method of separating oil from oil-containing liquid Method of separating oil from oil-containing liquid

1979-01-09

1980-10-21

Hart, Charles N.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210500M, 210DIG5, B01D 3700, B01D 130

Patent

active

042292972

ABSTRACT:
A specific porous membrane is found to be extremely useful for permeation-separation of an oil from an oil-containing emulsion. By contacting a stable oil-containing emulsion of either water-in-oil type or oil-in-water type with the surface of a specific porous membrane having at its surface a critical surface tension of less than 35 dynes/cm to not less than 20 dynes/cm and having an average pore diameter of 0.03 .mu.m to 5 .mu.m, a pore radius distribution of not more than 1.5 and a porosity of 1 to 85%, only the oil can be permeation-separated, without permeation of the liquid immiscible with the oil, with high selectivity and high oil permeation.

REFERENCES:
patent: 3478874 (1969-11-01), McLean et al.
patent: 3537587 (1970-11-01), Kain
patent: 3617566 (1971-11-01), Oshima
patent: 3667608 (1972-06-01), Burroughs et al.
patent: 3679058 (1972-07-01), Smith
patent: 3744638 (1973-07-01), Rhodes
patent: 3748632 (1973-07-01), Rhodes
patent: 3764527 (1973-10-01), Sohl
patent: 3810832 (1974-05-01), Rhodes
patent: 4073143 (1978-02-01), Preus
patent: 4124981 (1978-11-01), Preus
Transactions ASAIO, vol. XI, 1965, pp. 301-306, Lyman et al.

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