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采用几种局部组成模型作了过量焓(H~E)推算液液平衡(LLE)的探索。结果表明NRTL、UNIQUAC及其改进型(参数设为温度函数关系)的推算效果均很差,甚至连定性正确的推算也不能提供。汪文川等提出的“完善”的局部组成模型对某些体系有较佳的推算能力,作者对此模型作了进一步研究,经验地增加了RTbx_1x_2ln T项,并设配位数Z为可变参数,改进模型推算精度明显提高,对某些体系其推算精度与Rowley等报导结果相当。
Several local composition models were used to explore the excess liquid enthalpy (H ~ E) estimation of liquid-liquid equilibrium (LLE). The results show that the imputed effects of NRTL, UNIQUAC, and their variants (parameters set as a function of temperature) are poor and can not be provided even by qualitatively correct estimates. Wang Wenchuan and other proposed “perfect ” partial composition model for some systems have better ability to calculate, the author made further research on this model, the empirical increase of RTbx_1x_2lnT items, and set the coordination number Z is variable Parameters, improve the accuracy of model estimation significantly improved, the accuracy of some systems and Rowley reports the accuracy of results reported.