Determination of metastable zone and induction time of analgin for cooling crystallization

Ling Zhou; Zhao Wang; Meijing Zhang; Mingxia Guo; Shijie Xu; Qiuxiang Yin

doi:10.1016/j.cjche.2016.05.046

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Determination of metastable zone and induction time of analgin for cooling crystallization

Chemical Engineering Thermodynamics | Updated：2026-01-06

- Determination of metastable zone and induction time of analgin for cooling crystallization
- Chinese Journal of Chemical Engineering Vol. 25, Issue 3, Pages: 313-318(2017)
- Affiliations：
  
  1. School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University,Tianjin,China,300072
  2. Collaborative Innovation Center of Chemical Science and Chemical Engineering,Tianjin,China,300072
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2016.05.046
  CLC：
- Published：2017
- Accepted：
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Ling Zhou, ZhaoWang, Meijing Zhang, Mingxia Guo, Shijie Xu, Qiuxiang Yin. Determination of metastable zone and induction time of analgin for cooling crystallization[J]. , 2017, 25(3): 313-318.
DOI：

Ling Zhou, ZhaoWang, Meijing Zhang, Mingxia Guo, Shijie Xu, Qiuxiang Yin. Determination of metastable zone and induction time of analgin for cooling crystallization[J]. , 2017, 25(3): 313-318. DOI： 10.1016/j.cjche.2016.05.046.

摘要

Abstract

The solubility

metastable zone width

and induction time of analgin for unseeded batch cooling crystallization in ethanol-aqueous system were experimentally determined. The solubility data could be well described by the van't Hoff equation model. The metastable zone width at various cooling rates was measured

and some parameters of nucleation kinetic were calculated using the Ny'vlt theory. Furthermore

the induction period of various temperatures and supersaturation ratios was also measured. According to classical nucleation theory

some nucleation parameters and interfacial energy was calculated through the induction time (

ind

) data. Homogeneous nucleation tended to occurwhen the supersaturation is high

whereas heterogeneous nucleationwasmore likely to occur when the supersaturation is low.

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