期刊
CHEMICAL ENGINEERING SCIENCE
卷 143, 期 -, 页码 114-121出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2015.12.020
关键词
Binary melt; Melt crystallization; Solute distribution; Solid-liquid interface; Solid purity
资金
- Ministry of Education, Culture, Sports, Science & Technology in JAPAN [24360377, 2012-2015]
To study solute distribution at the solid-liquid (S-L) interface during melt crystallization, we examined the applicability of the interfacial solute distribution factor proposed based on a kinetic model involving both mass and heat balances at the interface. The factor derived from the model was compared with the experimental results obtained by employing a binary melt with the different species and concentrations of fatty acids as biodiesel related mixtures. As a result, we were able to reveal the empirical relation between the purity of the crystal and the solidification conditions of the melt. Based on the model, we also numerically calculated the transient changes in the interfacial solute distribution factor as well as the temperature of the S-L interface in the solidification process of the melt. The minimization of the factor was confirmed when the melt was supercooled at the S-L interface after starting solidification. (C) 2015 Elsevier Ltd. All rights reserved.
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