Polarity gradient extraction method

Details Polarity gradient extraction method Polarity gradient extraction method

C - Chemistry, Metallurgy

10

C

196/246

C10C 3/00 (2006.01) B01D 11/02 (2006.01) C10G 1/04 (2006.01)

Patent

CA 1160976

F-0574(0698) POLARITY GRADIENT EXTRACTION METHOD Abstract of the Disclosure An improved method for deasphalting a hydrocarbon feedstock comprises the use of at least two solvents in an extraction column to establish a liquid polarity gradient within it. The hydrocarbon feedstock may be heavy oil, residua, or tar sands.

391488

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