Method of filtering oil from oil-and-water emulsions
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United States of America Patent
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Jan 5, 1982
Issued Date -
N/A
app pub date -
Mar 7, 1980
filing date -
Jan 31, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of separating an oil-and-water phase from an oil-and-water emulsion, which method comprises passing the emulsion first through a wall of a prefilter composed first of fibres having an energy of adhesion of from 2 to 50 ergs/cm.sup.2 to form larger oil droplets, and, thereafter, passing the larger oil droplets and the emulsion through adjacent layers of glass fibres, to separate the oil phase from the oil-and-water emulsion, and then collecting and removing the oil phase, while permitting the passage of an essentially oil-free water phase of the emulsion from the prefilter.
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