Crystallization method

Details Crystallization method Crystallization method

1996-12-02

1999-08-10

Hiteshew, Felisa

Chemical apparatus and process disinfecting, deodorizing, preser

Physical type apparatus

Crystallizer

117 11, B01D 900

Patent

active

059355344

ABSTRACT:
In a crystallization method, a liquid mixture containing a crystallizable component is cooled so as to form and separate crystals of the crystallizable component. Then, a purified melt having purity substantially equal to that of the separated crystals, to which a polymerization inhibitor is added and which is heated to a temperature higher than a freezing point of the separated crystals, is circulated to flow contacting the crystals so as to accelerate melting. Then, the melted crystals are recovered along with the purified melt containing the polymerization inhibitor.

REFERENCES:
patent: 3282968 (1966-11-01), Scribner et al.
patent: 4081485 (1978-03-01), Eguchi
patent: 4780568 (1988-10-01), Pascoe
Handbook of Industrial Crystallization, Allan S. Myerson, Butterworth-Heinemann, 1993 Japanese Literature Article entitled, Introduction to Easy Practical Crystallization Process (pp. 76-83) (English summary attached).

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