Concentration Stability of a Crystallizer

Abstract

Sustained oscillations in solute concentration were experimentally verified by a continuous NaCl crystallizer.
To prevent such instabilities, a double crystallizer system motivated by an idea proposed in the field of emulsion polymerization was examined both by simulation and by experiment.
Appropriate selections of volume ratio of first to second crystallizer and feed flowrate ratio of first to second crystallizer enabled us to operate the crystallizer system without sustained oscillations.
It is notable that stable crystallizer operation is realized at the design stage.