Methods for processing a bituminous feed

Procede de traitement de matiere premiere bitumineuse

Abstract

A method for processing a bituminous feed includes forming an oil sand slurry, including a bitumen extract and solids, by contacting the bituminous feed with a first extraction liquor; forming a rich bitumen extract stream and separated solids by separating the solids from the bitumen extract; forming a washed solids stream and a lean bitumen extract stream, including precipitated asphaltenes, by washing the separated solids with an aliphatic solvent; forming a deasphalted lean bitumen extract stream by separating the precipitated asphaltenes from the lean bitumen extract stream; and obtaining a bitumen product stream by removing the first solvent from at least one of a first portion of the rich bitumen extract stream and a first portion of the deasphalted lean bitumen extract stream.

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