Solvent extraction process

Details Solvent extraction process Solvent extraction process

B - Operations, Transporting

01

D

202/124

B01D 3/08 (2006.01) B01J 23/94 (2006.01)

Patent

CA 1145292

ABSTRACT OF THE DISCLOSURE Solvents are separated from solvent bearing material by feeding the material to the open end of a reactor vessel rotatable about a substantially horizontal axis. The vessel has internal vanes operable to move the material from the open end towards the closed other end of the vessel when the vessel is rotated in one direction, and to move the material towards the open end when the vessel is rotated in the oppo- site direction. The reactor vessel is heated to a predeter- mined temperature while rotating the vessel in the one direction to cause solvent to be distilled from the material, and distilled gases are collected from the open end of the vessel and subsequently cooled to condense the distillate. The heating of the vessel is continued to a temperature high enough to produce a free-flowing residue when the reactor vessel is cooled. The vessel is then cooled and rotated in the opposite direction to cause the residue to be discharged from the open end of the vessel.

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