PROCESS AND UNIT FOR SOLVENT RECOVERY FROM SOLVENT DILUTED TAILINGS DERIVED FROM BITUMEN FROTH TREATMENT

摘要

A tailings solvent recovery unit (TSRU) and a process for recoveringparaffinicsolvent from solvent diluted tailings derived from a bitumen froth treatmentoperation are described. The solvent diluted tailings are processed in ordertorecover certain compounds, such iso-paraffins or cyclo-paraffins, which arepresent in the paraffinic solvent previously added to the bitumen froth andwhichare preferentially retained within asphaltene-bitumen matrices with respect toother paraffins of the paraffinic solvent due to lower diffusivity.