Partial dissolution of fines suspended in solution overflowed from a NaCl fluidized bed crystallizer for control of product crystal size

被引：0

作者：

Hasegawa, M ^{[1
]}

Toyokura, K

机构：

[1] Salt Ind Ctr Japan, Sea Water Sci Res Lab, Odawara, Kanagawa 2560816, Japan

[2] Waseda Univ, Sch Sci & Engn, Tokyo 1690072, Japan

来源：

KAGAKU KOGAKU RONBUNSHU | 1998年 / 24卷 / 03期

关键词：

crystallization; partial dissolution of fines; dissolution model; fluidized bed crystallizer; product crystal size; dimensionless design chart;

D O I：

10.1252/kakoronbunshu.24.370

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Unsaturated brine of a known concentration of NaCl was added into a solution from a NaCl fluidized bed crystallizer to make unsaturated state and the change of fines in the solution was studied against operational conditions of unsaturation and agitation time. The population of fines counted after they became visible by standing of the solution in a supersaturated states for 24 hours is correlated with the product between unsaturation and agitation period, and the dissolution coefficient is obtained. A dimensionless design chart of product crystal size, production rate, suspension density of crystals in a crystallizer, average nucleation rate and average growth rate is proposed, and an industrial application for manufacturing products having desired crystal size by the partial dissolution of fines is discussed.

引用

页码：370 / 373

页数：4