Aquarion - Evaporative Crystallizers

Supersaturation is the driving force of crystallization. It is mainly achieved by evaporation, cooling or chemical reaction. Evaporative crystallization is usually chosen when solubility of the solute is nearly independent of temperature and supersaturation is achieved by concentrating the slurry. Vacuum cooling crystallization is usually chosen when the solubility of the substance to be crystallized is strongly dependent on temperature. The main advantage of vacuum cooling crystallization is the absence of cooling surfaces that avoids incrustation.