Abstract
New charts for design of continuous mixed crystallizers are devised from design equations proposed by the Authors under ΔL law. These charts correlate nucleation rate, growth rate, product crystal size, suspension density and crystallization rate per unit volume of a crystallizer, and can be applied for easy design calculation of the volume of a crystallizer and the estimation of product size from pilot plant data of nucleation rate, growth rate and suspension density. Furthermore, the number of fine crystal required to be added or removed to produce the desired crystal size is readily obtained by these charts.
Bransom equations for crystal growth rate are discussed for design, and these charts are shown to be able to be applied under a little device. Additionally, new decision of power of crystal size in Branson equations is proposed. Design result from Bransom equations is compared with one from ΔL, law for the same design conditions and data, and the difference between them is shown not to be negligible.
