Filter-centrifuge series combination for improved oil- wax...

Details Filter-centrifuge series combination for improved oil- wax... Filter-centrifuge series combination for improved oil- wax...

C - Chemistry, Metallurgy

10

G

196/259

C10G 73/28 (2006.01) C10G 73/06 (2006.01) C10G 73/36 (2006.01)

Patent

CA 1248486

ABSTRACT OF THE DISCLOSURE An improved method for oil-wax separation is disclosed which comprises the use of a filtration zone (10) followed by a centrifugation zone (20). The filtration zone produces a wax cake product which may be reslurried prior to being centrifuged, and a relatively wax-free filtrate product. The centrifugation zone (20) produces a relatively wax-free liquid which is recycled to the filtration zone (10) and a dry wax cake product having a relatively low solvent and oil content. A preferred centrifugation zone (20) comprises a scroll decanter centrifuge. The disclosed process produces a relatively dry wax cake product. This improves the dewaxed oil yield by having a reduced amount of oil entrained in the wax cake product. The process also reduces the energy consumption associated with wax recovery by decreasing the amount of solvent entrained in the wax cake.

438510

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