Patent ID: 6187965
Filing Date: 2001-02-13
Classification: C07C,C07D

Abstract:
A method of recovering a low vapor pressure, high boiling solvent from an effluent stream comprising said solvent, water, and at least 10 weight percent of monomeric units, said method comprising the steps of:(a) polymerizing the monomeric units in the effluent stream under conditions effective to reduce the monomeric units to less than 10 weight percent of the stream;(b) feeding the effluent stream into a first stage separator and separating water and volatiles from the effluent stream to provide a dewatered solvent fraction; and(c) feeding the dewatered solvent fraction into a second stage separator and separating said dewatered fraction into a vapor fraction containing said solvent and a sludge fraction containing non-volatile materials.