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
收藏
页码：171 / 175
页数：5
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