Process of drying and heating oil-containing solids

Details Process of drying and heating oil-containing solids Process of drying and heating oil-containing solids

C - Chemistry, Metallurgy

10

G

196/30

C10G 1/02 (2006.01) C10B 57/10 (2006.01) C10F 5/00 (2006.01) C10F 5/06 (2006.01)

Patent

CA 1232221

ABSTRACT OF THE DISCLOSURE: In a drying zone, the solids are directly contacted with superheated steam, which enters at a tem- perature of at least 200°C. Part of the mixed vapors leaving the drying zone are removed and the remaining mixed vapors are heated to at least 200°C and recycled to the drying zone. The mixed vapors may be heated, e.g., by an indirect heat exchange with hot flue gas or hot solids. The heated solids may subsequently be distilled at tem- peratures of about 400 to 600°C in a mixture with a hot, fine-grained heat transfer medium. The drying zone may be provided in a vertical pneumatic conveyor, a fluidized bed, a rotary kiln or a cyclone battery.

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