Treatment of impurity-containing liquid streams in ethylene...

Details Treatment of impurity-containing liquid streams in ethylene... Treatment of impurity-containing liquid streams in ethylene...

C - Chemistry, Metallurgy

07

C

C07C 29/86 (2006.01) C07C 29/50 (2006.01) C07C 29/76 (2006.01) C07C 31/20 (2006.01) C07C 41/36 (2006.01) C07C 41/38 (2006.01) C07C 43/11 (2006.01) C07D 301/08 (2006.01) C07D 301/10 (2006.01) C07D 301/32 (2006.01) C07D 303/04 (2006.01)

Patent

CA 2048624

- 57 - TREATMENT OF IMPURITY-CONTAINING LIQUID STREAMS IN ETHYLENE OXIDE/GLYCOL PROCESSES WITH SEMI-PERMEABLE MEMBRANES ABSTRACT OF THE DISCLOSURE A method is disclosed for separating impurity components, UV absorbers and/or UV absorber precursors contained in an ethylene glycol-water stream thereby desirably allowing the recovery of the glycols contained in such stream in an economical and efficient manner. Specifically, these undesirable components are separated by contacting the ethylene glycol-water stream with a suitable semi-permeable membrane to effect such separation.

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