Inorganic Chemicals Industry >

2021 , Vol. 53 >Issue 8: 55 - 59

DOI: https://doi.org/10.19964/j.issn.1006-4990.2020-0562

Research & Development

Study on thermodynamic model of vapor-liquid equilibrium of electrolyte system

  • Zhiguo Liu ,
  • Na Zhang ,
  • Chuan Chen ,
  • Xianzhen Xu
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  • 1. Navel Aeronautical University,Qingdao Branch,Qingdao 266000,China
    2. College of Chemistry and Chemical Engineering,Qingdao University

Received date: 2020-10-19

  Online published: 2021-08-11

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Abstract

The phase equilibrium of electrolyte solution systems is the basis of chemical unit operation,and has important research value in in the fields of chemistry and chemical engineering,oceanography,geology and so on.Scholars at home and abroad have studied the experiment and theory on the vapor-liquid equilibrium for electrolyte solution system,and developed the empirical and semi-empirical models with their own characteristics.The extended activity coefficient model with prediction was established in this article,and the model was based on the NRTL theory and the hypothesis of hydration and mixed salt.The feasibility of the model was verified by the correlation calculation of 21 binary electrolyte systems and 14 mixed systems.In addition,the binary system parameters could be used to directly predict the vapor-liquid equilibrium of the mixed electrolyte solution system.

Key words： electrolyte solution; phase equilibrium; thermodynamics; activity coefficient model

Cite this article

Zhiguo Liu , Na Zhang , Chuan Chen , Xianzhen Xu . Study on thermodynamic model of vapor-liquid equilibrium of electrolyte system[J]. Inorganic Chemicals Industry, 2021 , 53(8) : 55 -59 . DOI: 10.19964/j.issn.1006-4990.2020-0562

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