STABILITY OF A CRYSTALLIZER AND ITS EFFECT ON CRYSTAL SIZE DISTRIBUTION

It is well known that sustained oscillations in solute concentration often take place in a continuous crystallizer. From the standpoint of crystallizer operation, it is indispensable to clarify the effects of crystallizer instability on the crystal size distribution. In this work, relations between the instability and the crystal size distribution were examined both by simulation and by experiment. Mixtures of NaCl, water, and ethanol were used in the experiment. It was observed that sustained oscillations were propagated from the fine - size crystals to the large-size crystals.