Design Method of Classifying Crystallizers based on Secondary Nucleation Rate

Abstract

A new design method of classifying crystallizers (cone and cylindrical shaped types) is proposed on the basis of not only crystal growth rate, but secondary nucleation rate for potassium alum reported in the previous paper. Further, the method for estimation of the correlation between product size and production rate under the operational conditions of a fixed industrial crystallizer is also studied. The estimated values from the laboratory data of the crystallization of potassium alum are compared with data obtained from an industrial crystallizer that is actually operated. They agree fairly well, and as a result, it is suggested that about a hundred thousand times scale-up from data of a laboratory scale fluidized crystallizer to an industrial one may be possible by the use of the proposed method.