Distillation: processes – separatory – Distilling to separate or remove only water – From organic compound
Patent
1993-12-15
1996-09-03
Manoharan, Virginia
Distillation: processes, separatory
Distilling to separate or remove only water
From organic compound
159DIG27, 203 86, 203DIG16, 21050027, 210640, 21050038, 568868, B01D 300
Patent
active
055520235
ABSTRACT:
Recovery of ethylene glycol from dilute aqueous solutions is accomplished by passing the solution over the surface of a porous hydrophobic membrane capable of passing water vapor but not liquid water. The pressure and temperature provide a positive driving force for the movement of water vapor through the membrane to the opposite face where it is removed by condensation or a stream of gas or liquid. Preliminary concentration of the aqueous solutions may be provided by use of reverse osmosis membrane. The method is useful in the reclamation of spent deicing fluid.
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Allied-Signal Inc.
Criss Roger H.
Manoharan Virginia
Wells Harold N.
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