Method for removing extraction solvent from extraction residue t

Details Method for removing extraction solvent from extraction residue t Method for removing extraction solvent from extraction residue t

1993-06-29

1994-09-06

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210180, B01D 1104

Patent

active

053445643

ABSTRACT:
A method for removing an organic extraction solvent from an extraction residue, which is characterized in that an oil or fat is allowed to contact an extraction residue remaining in an oil-and-fat extractor which contains an organic solvent, and the oil or fat is then drawn out of said extractor. The procedures of allowing oil or fat to contact said residue and of drawing the oil or fat out of said extractor are repeated until the density of the solvent in the atmosphere of said extractor becomes lower than the lowest ignitable limit.

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