Apparatus and method of freeze concentrating aqueous waste and p

Details Apparatus and method of freeze concentrating aqueous waste and p Apparatus and method of freeze concentrating aqueous waste and p

1989-06-23

1990-06-26

Capossela, Ronald C.

Refrigeration

Processes

Fractionally solidifying a constituent and separating the same

62123, B01D 904

Patent

active

049361147

ABSTRACT:
A method and apparatus for cooling a warm feed stream of aqueous liquid to close to but above the freezing point of the aqueous liquid and delivering it to a mixing tank; withdrawing an aqueous ice slurry from an ice slurry receiver-crystallizer and delivering it to the mixing tank to further cool the contents and produce temperature control of the mixing tank contents; withdrawing an aqueous slurry from the mixing tank and delivering it to a slurry thickener tank for precipitate separation thereof; removing the precipitate from the slurry thickener tank and disposing of it; withdrawing aqueous liquid from the thickener tank and delivering it to the ice slurry receiver-crystallizer; and withdrawing an aqueous ice slurry from the ice slurry receiver-crystallizer, feeding it through a freeze exchanger to produce additional aqueous ice slurry and withdrawing the aqueous ice slurry from the freeze exchanger and feeding it to the ice slurry receiver-crystallizer. A single feed tank can be used in place of the mixing tank and the thickener tank.

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