Solvent extraction process for treatment of oily substrates

Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...

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2082621, 2082625, 210708, 210712, 210738, 210909, B01D 1104, B01D 1704

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active

052863867

ABSTRACT:
The present invention is directed to a process for treating an oily substrate, including a mixture comprising water and oily material or a mixture comprising water, solids and oily material as components, and wherein such treatment comprises contacting the oily substrate with a solvent for the oily material, a comminuting surfactant, and a flocculant, wherein said solvent for said oily material ranges in solubility in water from sparingly soluble to substantially water insoluble, to produce at least one phase differentiating interface and to thereby render one or more components of said oily substrate separable.

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