Crystal size engineering in melt suspension crystallization

被引：3

作者：

Diepen, PJ

Bruinsma, OSL

VanRosmalen, GM

机构：

[1] Delft University of Technology, Laboratory for Process Equipment, Delft

[2] Laboratory for Process Equipment, Delft University of Technology, 2628-CA Delft

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 1997年 / 75卷 / A2期

关键词：

caprolactam; melt crystallization; permeability; CSD;

D O I：

10.1205/026387697523417

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Melt suspension crystallization is used for ultrapurification of caprolactam from caprolactam-water mixtures. The influence of hydrodynamics, cooling profile, impurity concentration, and residence time on the crystal bed permeability were modelled, and measured in a cooling disk crystallizer. Permeability gives a good indication of the efficiency of the solid-liquid separation. Reducing backmixing improves permeability. Permeability increases with increasing residence times and decreasing water content.

引用

页码：171 / 175

页数：5

共 8 条

[1]

Coulson J. M., 1978, CHEM ENG

[2] ON THE MORPHOLOGY OF CAPROLACTAM [J].