Separation of oil fraction from oil-in-water emulsions

Details Separation of oil fraction from oil-in-water emulsions Separation of oil fraction from oil-in-water emulsions

B - Operations, Transporting

01

D

134/54

B01D 17/05 (2006.01) B01D 17/04 (2006.01)

Patent

CA 1182714

Abstract Separation of Oil Fraction from Oil-in-Water Emulsions A method is provided for separating dispersed, fine oil droplets from crude oil produced water which method comprises adding very small amounts of an aluminum or iron cation emulsion breaker to the dispersion followed by agitation of the dispersion by a rotating paddle stirrer at a paddle tip speed of 0.15 to 0.40 meters per second for 10-30 minutes. The method provides for a substantial reduction over previous methods in the amount of emulsion breaking chemical used and, as well, reduces the amount of oil retained in the water to levels as low as 0.5 ppm.

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