Serial flow crystallization at linearly decreasing pressures

Details Serial flow crystallization at linearly decreasing pressures Serial flow crystallization at linearly decreasing pressures

1972-11-01

1976-01-13

Yudkoff, Norman

Chemistry: physical processes

Physical processes

Crystallization

23273, 156622, B01D 902

Patent

active

039321428

ABSTRACT:
A process and apparatus for obtaining crystals of a particular substance from a flowing solution thereof, by supplying the seeding crystals to one n.sup.th portion of the saturated solution and supplying one n.sup.th portion of the solution to the crystalliser further downstream at each of (n-1) places. The supersaturation of the solution is maintained at the required value by keeping the static pressure so low that self-vaporisation occurs, whereas this static pressure is caused to drop gradually in the crystalliser from its inlet end toward its discharge end.

REFERENCES:
patent: 1738275 (1929-12-01), Baker
patent: 1963921 (1934-06-01), Nagelvoort
patent: 2569357 (1951-09-01), Vahl
patent: 2587556 (1952-02-01), Weiss et al.
patent: 2778717 (1957-01-01), Decker
patent: 3243264 (1966-03-01), Hickey
patent: 3337419 (1967-08-01), Kogan
patent: 3440026 (1969-04-01), DuBow
patent: 3554800 (1971-01-01), Javet et al.

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