Device for substance separation from a liquid mixture by crystal

Details Device for substance separation from a liquid mixture by crystal Device for substance separation from a liquid mixture by crystal

1991-11-25

1994-07-05

Straub, Gary P.

Chemical apparatus and process disinfecting, deodorizing, preser

Physical type apparatus

Crystallizer

23295R, B01D 900, C13K 110

Patent

active

053265416

ABSTRACT:
An endless steel band or belt (12) moves upwardly (see arrow 65). The upper length or run (17) of the band or belt (12) is cooled or heated by a fluid flowing from nozzles (43, 59). A feeding station (21) supplies a liquid mixture which mixture runs downwardly along the crystallizing surface (11) of the belt. A crystal layer is thus formed on the crystallizing surface 11. This crystal layer is moved upwardly in counter-current. The remaining liquid, the mother liquor, which is substantially free from crystallizable substance, flows downwardly. A device (22) for changing the inclination angle (.alpha.) of the crystallizing surface permits the crystallizing device to be adjusted in a simple way in accordance with the requirement of the crystallizating process. For automatic operation, a control unit (C) can associate the angle of inclination (.alpha.), the speed of movement of the band or belt (12), and hence of the crystallization surface (11) thereon and the temperature profile of the crystallization surface for optimum crystallization.

REFERENCES:
patent: 3010802 (1961-11-01), Schwek et al.
patent: 3011878 (1961-12-01), Lackey et al.
patent: 3603103 (1971-09-01), Richmond et al.
patent: 3612664 (1971-10-01), Berman
patent: 3932142 (1976-01-01), de Vries et al.
patent: 4443412 (1984-04-01), Schermutzki et al.
S. J. Jancic, "The Sulzer MWB Fractional Crystallization System" Sulzer Technical Review Apr. 1985.

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