Method and apparatus for solvent recovery from waste wash liquid

Details Method and apparatus for solvent recovery from waste wash liquid Method and apparatus for solvent recovery from waste wash liquid

1996-11-05

1998-10-27

Bhat, Nina

Distillation: processes, separatory

Miscellaneous separatory

202175, 202176, 202177, 202180, 2021851, 202197, B01D 300, B01D 302

Patent

active

058274049

ABSTRACT:
A solvent recovery method and apparatus recover waste wash liquid generated in automatic washing of a printing machine so as to enable a printing machine washing of high productivity, excellent safety and health effect, and low cost. The solvent recovery apparatus has a gravity separation tank (1) for receiving waste wash liquid used for washing of the printing machine and separating it by a specific gravity difference. A vaporizer (2) receives, heats and vaporizes the separated liquid from the tank (1) in order from a lower layer liquid (H) to an upper layer liquid (L). A condenser (3) receives, cools and condenses, by water (W), the vapor from the vaporizer (2). A distillate gravity separation tank (4) receives liquid from the distillate gravity separation tank (4) receives liquid from the condenser (3) and holds it statically to separate the liquid into organic solvent (S) and water (W).

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