Stripping of diluent from the d.c. tailings of a hot water...

Details Stripping of diluent from the d.c. tailings of a hot water... Stripping of diluent from the d.c. tailings of a hot water...

C - Chemistry, Metallurgy

10

G

196/23

C10G 1/04 (2006.01)

Patent

CA 1239888

70607-30 ABSTRACT OF THE DISCLOSURE A novel process for recovering naphtha diluent and bitumen from dilution centrifuge tailings comprises passing the tailings into a stripping cell which receives a carrier gas, preferably inert, for stripping the naphtha from the tailings and also For forming an essentially naphtha-free bitumen froth which is skimmed from the cell and preferably added to a primary bitumen froth stream, the stripped naphtha vapours being collected together with the carrier gas and recovered in a substantially pure form. This recovery of expensive naphtha is effected in a single step while concurrently providing a useful bitumen froth and thus the process significantly contributes to the efficiency of the Hot Water extraction process.

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