Solubility measurement and prediction of phase equilibria in the quaternary system LiCl + NaCl + KCl + H2O and ternary subsystem LiCl + NaCl + H2O at 288.15 K

doi:10.1016/j.cjche.2020.05.020

Chinese Journal of Chemical Engineering ›› 2020, Vol. 28 ›› Issue (8): 2137-2141.DOI: 10.1016/j.cjche.2020.05.020

• Chemical Engineering Thermodynamics • Previous Articles Next Articles

Solubility measurement and prediction of phase equilibria in the quaternary system LiCl + NaCl + KCl + H₂O and ternary subsystem LiCl + NaCl + H₂O at 288.15 K

Ruizhi Cui

Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China

Received:2020-03-26 Revised:2020-05-13 Online:2020-09-19 Published:2020-08-28
Contact: Ruizhi Cui
Supported by:
The project was supported by the National Natural Science Foundation of China (41903051), the Natural Science Foundation of Qinghai Province (2020-ZJ-970Q), "Thousand Talents Program for High-end Innovative Talents" of Qinghai Province and CAS "Light of West China" Program.

Solubility measurement and prediction of phase equilibria in the quaternary system LiCl + NaCl + KCl + H₂O and ternary subsystem LiCl + NaCl + H₂O at 288.15 K

Ruizhi Cui

Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China

通讯作者: Ruizhi Cui
基金资助:
The project was supported by the National Natural Science Foundation of China (41903051), the Natural Science Foundation of Qinghai Province (2020-ZJ-970Q), "Thousand Talents Program for High-end Innovative Talents" of Qinghai Province and CAS "Light of West China" Program.

Abstract

Abstract: Using isothermal dissolution method, the phase equilibrium relationship in quaternary system LiCl + NaCl + KCl + H₂O and the ternary subsystem LiCl + NaCl + H₂O at 288.15 K were investigated. Each phase diagram of two systems was drawn. The phase diagram of LiCl + NaCl + H₂O system contains two solid phase regions of crystallization LiCl·2H₂O and NaCl. In the phase diagram of LiCl + NaCl + KCl + H₂O system, there are three crystallization regions: LiCl·2H₂O, NaCl and KCl respectively. In this paper, the solubilities of phase equilibria in two systems were calculated by Pitzer's model at 288.15 K. The predicted phase diagrams generally agree with the experimental phase diagrams.

Key words: Underground brine, Phase diagram, Pitzer model, Solubility prediction, Lithium chloride

摘要： Using isothermal dissolution method, the phase equilibrium relationship in quaternary system LiCl + NaCl + KCl + H₂O and the ternary subsystem LiCl + NaCl + H₂O at 288.15 K were investigated. Each phase diagram of two systems was drawn. The phase diagram of LiCl + NaCl + H₂O system contains two solid phase regions of crystallization LiCl·2H₂O and NaCl. In the phase diagram of LiCl + NaCl + KCl + H₂O system, there are three crystallization regions: LiCl·2H₂O, NaCl and KCl respectively. In this paper, the solubilities of phase equilibria in two systems were calculated by Pitzer's model at 288.15 K. The predicted phase diagrams generally agree with the experimental phase diagrams.

关键词: Underground brine, Phase diagram, Pitzer model, Solubility prediction, Lithium chloride

Ruizhi Cui. Solubility measurement and prediction of phase equilibria in the quaternary system LiCl + NaCl + KCl + H₂O and ternary subsystem LiCl + NaCl + H₂O at 288.15 K[J]. Chinese Journal of Chemical Engineering, 2020, 28(8): 2137-2141.

Ruizhi Cui. Solubility measurement and prediction of phase equilibria in the quaternary system LiCl + NaCl + KCl + H₂O and ternary subsystem LiCl + NaCl + H₂O at 288.15 K[J]. 中国化学工程学报, 2020, 28(8): 2137-2141.

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Solubility measurement and prediction of phase equilibria in the quaternary system LiCl + NaCl + KCl + H₂O and ternary subsystem LiCl + NaCl + H₂O at 288.15 K

Solubility measurement and prediction of phase equilibria in the quaternary system LiCl + NaCl + KCl + H₂O and ternary subsystem LiCl + NaCl + H₂O at 288.15 K

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