Method of separation by fractional crystallization from a liquid

Details Method of separation by fractional crystallization from a liquid Method of separation by fractional crystallization from a liquid

1983-03-25

1985-01-15

Sever, Frank

Refrigeration

Processes

Fractionally solidifying a constituent and separating the same

23295R, B01D 902

Patent

active

044937199

ABSTRACT:
A method of separation by fractional crystallization from a liquid mixture in which the liquid mixture is repeatedly passed in turbulent flow through an indirectly cooled crystallization zone, which must be kept full. The liquid remaining after deposition of a layer of crystals on the wall of the crystallization zone is removed, whereupon the surface of the layer of crystals is washed and the crystals are melted by passing a melt of similar compositions to that of the layer of crystals through the crystallization zone. During crystallization the melt is maintained at the temperature of crystallization and crystallization is stopped when the frozen fraction is from 70 to 98%.

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