A study on crystallization kinetics of pentaerythritol in a batch cooling crystallizer

被引：26
|
作者：
Cheon, YH
Kim, KJ
Kim, SH
机构：
[1] Korea Univ, Dept Chem & Biol Engn, Seoul 136701, South Korea
[2] HYOSUNG CORP, Cent Res Inst, N Project Team, Anyang 431080, Kyonggi Do, South Korea
[3] Hanbat Natl Univ, Dept Chem Engn, Taejon 305719, South Korea
来源：
CHEMICAL ENGINEERING SCIENCE | 2005年 / 60卷 / 17期
关键词：
crystallization; nucleation; pentaerythritol; supersaturation; batch cooling crystallizer;
D O I：
10.1016/j.ces.2005.03.035
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The crystallization kinetics of pentaerythritol (PeE) in aqueous solution in the presence of impurity or not in a batch cooling crystallizer was explored. Also, the solubility and the nucleation and crystal growth kinetics of PeE in aqueous solution were investigated. A second-order dependence of PeE growth rate on supersaturation is observed in pure PeE-water system. The crystal growth rate of PeE-water system in the presence of impurity is proportional to the supersaturation to the 3.5 power. The nucleation and crystal growth behaviors for PeE-water system in a batch cooling crystallizer were grasped according to Mersmann's criteria. The nucleation in this crystallizer was found to act with heterogeneous nucleation. In this system, it suggests that the crystal growth is controlled by a complex mechanism behavior of surface integrated and diffusion limited. Simplified relation was derived for calculation of mean crystal size of product crystals from the batch cooling crystallizer. The obtained relation was verified by a set of experiments. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4791 / 4802
页数：12
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