SCI和EI收录∣中国化工学会会刊

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   

  1. 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   

  1. 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: 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