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提出一个新的无限稀释活度系数的斜率关联式(dlnγ_1/dx_1)_x_1=0,与适当的过量自由焓G~E模型相结合可用于计算两参数过量自由焓的模型参数,进而预测整个浓度范围的汽液平衡。 分别用本文提出的方法和UNIFAC方法对118个等温互溶二元系和47个等压互溶二元系作了汽液平衡预測,并与有关文献数据进行比较评定。结果表明,本方法预測精度令人满意,绝大多数体系预测结果优于UNIFAC或与之相当。
Proposed a new infinite dilution activity coefficient slope correlation formula (dlnγ_1 / dx_1) _x_1 = 0, combined with the appropriate excess free enthalpy G ~ E model can be used to calculate the two parameters of the excess free enthalpy model parameters, and then predict the entire concentration Range of vapor-liquid equilibrium. The vapor-liquid equilibria of 118 isothermally binary and 47 isobaric binary systems were predicted by the proposed method and the UNIFAC method, respectively, and compared with the literature data. The results show that the accuracy of the proposed method is satisfactory, and most of the system prediction results are better than UNIFAC.