CIESC Journal ›› 2019, Vol. 70 ›› Issue (6): 2036-2050.DOI: 10.11949/0438-1157.20181508

• Reviews and monographs • Previous Articles     Next Articles

Review on mixing rules in vapor-liquid equilibrium of mixtures

Yanxing ZHAO1(),Xian WANG1,2,Xiaoyu YAO1,2,Xueqiang DONG1,Jun SHEN1,2,Maoqiong GONG1,2()   

  1. 1. Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
    2. University of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2018-12-24 Revised:2019-03-15 Online:2019-06-05 Published:2019-06-05
  • Contact: Maoqiong GONG

流体汽液相平衡混合规则研究进展

赵延兴1(),王宪1,2,姚晓宇1,2,董学强1,沈俊1,2,公茂琼1,2()   

  1. 1. 中国科学院低温工程学重点实验室(理化技术研究所),北京 100190
    2. 中国科学院大学,北京 100039
  • 通讯作者: 公茂琼
  • 作者简介:<named-content content-type="corresp-name">赵延兴</named-content>(1988—),男,博士,助理研究员,<email>zyx@mail.ipc.ac.cn</email>
  • 基金资助:
    国家重点研发计划项目(2018YFB0904400);国家自然科学基金项目(51876215);中国科学院国际伙伴计划(GJHZ1876)

Abstract:

The vapor-liquid phase equilibrium data are the critical thermophysical property in chemistry industry. Since the mixing rules are the key factor to calculate the vapor-liquid equilibrium property of mixtures, they have been studied for more than one hundred years. The representative mixing rules are summarized, including the original quadratic form, non-quadratic type, density type, state equation-excess free energy type and other mixing rules. The ability to describe the vapor-liquid equilibrium in the fluid is evaluated. The mathematical derivation of these mixing rules are given in an understandable way and the motivation of their development and their strengths and weaknesses are analyzed.

Key words: mixing rule, phase equilibrium, vapor-liquid equilibrium, equation of state, activity coefficient model, virial coefficient boundary conditions

摘要:

混合工质汽液相平衡学术内涵丰富且应用广泛,而混合规则是决定混合物性描述准确与否的关键因素。综述了具有代表性的混合规则,包括原始的二次型、非二次型、密度型、状态方程-超额自由能型等混合规则,评价了其在流体汽液相平衡的描述能力,辅以数学推导介绍了其发展的动机及存在的优劣,以期对将来混合规则发展提供思路。

关键词: 混合规则, 相平衡, 汽液平衡, 状态方程, 活度系数模型, 维里系数边界条件

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