Treatment of lower glycol-containing operative fluids

Details Treatment of lower glycol-containing operative fluids Treatment of lower glycol-containing operative fluids

1991-02-14

1992-04-07

Sever, Frank

Liquid purification or separation

Processes

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

21050041, B01D 6102, B01D 7168

Patent

active

051025493

ABSTRACT:
Operative fluids containing lower glycol are contacted with semi-permeable membranes under reverse osmosis conditions to permeate lower glycol to provide a reclaimed lower glycol product. Exemplary operative fluids include antifreeze solutions, heat transfer fluids, deicers, quenchants, hydraulic fluids, lubricants, solvents and absorbents.

REFERENCES:
patent: 3467604 (1969-09-01), Michaels
patent: 3875096 (1975-04-01), Graefe et al.
patent: 4851120 (1989-07-01), Reineke et al.

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