System and method for recovering oil from a waste stream

Details System and method for recovering oil from a waste stream System and method for recovering oil from a waste stream

B - Operations, Transporting

01

D

B01D 17/04 (2006.01) C02F 1/54 (2006.01) C02F 1/56 (2006.01)

Patent

CA 2556231

The systems and methods recover oil from an emulsified waste stream. A coagulating agent and/or a flocculating agent, or both, are added to the emulsified waste stream to accelerate separation into an aqueous stream and a thickened emulsified stream. The coagulating agent can comprise alum. The flocculating agent can comprise a cationic polymer. Separation of the thickened emulsified stream into an oil-rich component, a second aqueous component, and a solid cake can be effected by mechanical separation in a centrifuge, filter, or press.

L'invention concerne des systèmes et des procédés de récupération de pétrole d'un débit concentrat en émulsion. Un agent coagulant et/ou un adjuvant de coagulation sont ajoutés au débit concentrat en émulsion afin d'accélérer la séparation en flux aqueux et en flux émulsionné épaissi. L'agent coagulant peut comprendre de l'alun. L'adjuvant de coagulation peut comprendre un polymère cationique. La séparation du flux émulsionné épaissi en un constituant riche en pétrole, un second constituant aqueux et un pain solide peut s'effectuer par séparation mécanique dans une centrifugeuse, un filtre ou une presse.

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