关键词: 电解质体系, 电解质NRTL模型, 热力学模型, 活度系数模型

Abstract: The electrolyte NRTL model is a kind of important thermodynamic local composition model. This paper describes the research progress of the electrolyte NRTL model，including proposition，improvement，modification and extension of the model and the scope of application of different models. Some applications for correlation calculation of various kinds of complex electrolyte solutions are introduced，providing theoretical directions for process simulation，design and optimization. The main advantage of the electrolyte NRTL model is that it is applicable to a wide range of temperature and concentration with no need for high-order parameters. The disadvantages of the model are heavy regression work for parameters，and poor prediction accuracy at the critical point of electrolyte solution.

Key words: electrolyte systems, electrolyte NRTL model, thermodynamic model, activity coefficient model