C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/15
C10G 1/04 (2006.01) C10G 1/02 (2006.01)
Patent
CA 1071557
ABSTRACT OF THE DISCLOSURE: The present invention relates to an improved process for the recovery of hydrocarbonaceous materials from tar sand. This process which comprises the steps of a) subjecting a part of the tar sand to hot water extraction, said extraction comprising the following steps: - mixing said part of the tar sand with hot water to form a hot water extraction mixture; - separating solids and bitumen from said extraction mixture; and - converting said bitumen into hydrocarbons; and b) subjecting the remaining part of the tar sand to dry distillation, said distillation comprising the following steps: - mixing said remaining part of the tar sand with a fine-grained heat carrier heated to about 600-800°C to form a dry distillation mixture having a tempera- ture of above 400°C; - withdrawing gaseous and vaporous distilla- tion products from said distillation mixture; and - cooling and condensing said distillation products; is characterized in that at least a portion of the thermal energy required for the hot water extraction originates from the dry distilla- tion. This process is further characterized in that use can be made of a solid coke-like residue recovered from a further treatment of the bitumen recovered from hot water extraction, as fuel in the dry distillation and in that the wet solids recovered from the hot water extraction can be mixed with the dry distillation residue to form a solid product which can be transported on belt conveyors.
249420
Rammler Roland
Schmalfeld Paul
Weiss Hans-Jurgen
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