Separation of hydrocarbons from water

Details Separation of hydrocarbons from water Separation of hydrocarbons from water

C - Chemistry, Metallurgy

02

F

C02F 1/26 (2006.01)

Patent

CA 2705868

A method for the removal of entrained hydrocarbons, particularly aromatics, from water by extracting the hydrocarbons in the water with a hydrocarbon which is relatively less soluble in the water than the entrained hydrocarbon. The hydrocarbons are then separated from the water by a process of coalescence/separation. The extractant is suitably a paraffinic hydrocarbon which, while having an affinity for the entrained hydrocarbon, is relatively less soluble in water than hydrocarbons such as aromatics. The hydrocarbons removed from the water can be recirculated to the feed with the composition of the recirculating phase being controlled to achieve the desired level of hydrocarbon removal.

L'invention concerne un procédé permettant l'élimination d'hydrocarbures entraînés, en particulier d'aromatiques, de l'eau par extraction des hydrocarbures contenus dans l'eau avec un hydrocarbure qui est relativement moins soluble dans l'eau que l'hydrocarbure entraîné. Les hydrocarbures sont ensuite séparés de l'eau par un procédé de coalescence/séparation. De façon appropriée, l'extractant est un hydrocarbure paraffinique qui, tout en ayant une affinité pour l'hydrocarbure entraîné, est relativement moins soluble dans l'eau que des hydrocarbures tels que des aromatiques. Les hydrocarbures enlevés de l'eau peuvent être recirculés vers l'alimentation, la composition de la phase en recirculation étant ajustée pour réaliser le niveau souhaité d'élimination d'hydrocarbures.

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