Thermodynamics of salt lake system: Representation, experiments, and visualization

被引:20
作者
Kwok, Kui S. [1 ]
Ng, Ka M. [1 ]
Taboada, Maria E. [2 ]
Cisternas, Luis A. [2 ]
机构
[1] Hong Kong Univ Sci & Technol, Dept Chem Engn, Kowloon, Hong Kong, Peoples R China
[2] Univ Antofagasta, Dept Ingn Quim, Antofagasta, Chile
关键词
high-dimensional phase diagram; crystallization; thermodynamic model development; salt lake system; process design; solid-liquid equilibrium;
D O I
10.1002/aic.11421
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
A coherent, systematic approach for the determination of solid-liquid phase behavior of a multi-component salt lake system for use in the synthesis of crystallization process is presented. It centers on the thermodynamics of such a salt lake system and integrates three interrelated activities-representation of the system phase behavior as a phase diagram/thermodynamic model, experimental determination of the necessary data and visualization of the relevant crystallization regions. To illustrate this approach, the thermodynamics of a simplified salt lake system Li+, Na+, K+, Mg2+// Cl-, SO42- H2O at 25 degrees C and 1 atm was determined. The identification of process alternatives using the resulting phase diagram for recovering Li2SO4 center dot H2O was also illustrated. (c) 2008 American Institute of Chemical Engineers.
引用
收藏
页码:706 / 727
页数:22
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