Plural stage freeze crystallization with wash-water/concentrate

Details Plural stage freeze crystallization with wash-water/concentrate Plural stage freeze crystallization with wash-water/concentrate

1974-12-27

1976-11-23

Lutter, Frank W.

Refrigeration

Processes

Fractionally solidifying a constituent and separating the same

23273F, 62123, 62542, 62534, B01D 904

Patent

active

039929000

ABSTRACT:
The invention is directed to an apparatus and method of purifying contaminated water by means of a two-step freeze crystallization process. The method and apparatus overcomes the serious problem caused by the freezing of water on the screen of the wash column. The solution comprises means and method of reducing the temperature difference between the concentrate and the wash water in the wash column.

REFERENCES:
patent: 2813781 (1957-11-01), Mertes
patent: 2846292 (1958-08-01), Harper
patent: 3240025 (1966-03-01), Malick et al.

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