Ronald Lee Swift

US Patent:

7163606, Jan 16, 2007

Filed:

Dec 23, 2003

Appl. No.:

10/744792

Inventors:

Thomas B. Glenwright - Webster NY, US
Warren R. Smith - Webster NY, US
Betsy B. Dodge - Williamson NY, US
Steven P. Wazenkewitz - Sodus NY, US
Ronald L. Swift - Duvall WA, US

Assignee:

Xerox Corporation - Stamford CT

International Classification:

B01D 3/42
C07C 17/383

US Classification:

203 2, 203 14, 570262

Abstract:

A system for recovering methylene chloride from an aqueous waste stream is disclosed. The system includes a distillation unit, at least one heat transfer unit, receptacles for methylene chloride and waste product, a temperature probe and a controller configured to selectively divert product flow from the distillation unit to either of the receptacles or to a recycle line back to the distillation unit depending upon the temperature measured by the probe. Also disclosed is a related process of recovering methylene chloride with such a system.