应用Barker-Henderson微扰理论计算气液平衡

Application of the Barker - Henderson Perturbation Theory in the Calculation of Vapor -Liquid Equilibria

本文应用Barker-Henderson微扰理论进行了Ar-CH_4,N_2-CH_4,C_3H_8-C_6H_6,CO_2-C_3H_8,等体系的气液平衡计算,得到了比较满意的结果。纯物质的Kihara位能函数参数由拟合各物质在气液共存温度区(0.5<T_r<1.0)的P-V-T实验数据得到,并将它们表示成温度的函数。

The perturbation theory of Barker-Henderson was applied to the calculation of vapor-liquid equilibria for argon-methane, nitrogen-methane, propane-benzene and carbon dioxide-propane systems. The calculated results were satisfied except in the critical regions.The Kihara potential parameters of the pure substances were obtained by fitting P- V-T experimental data of these substances in vapor-liquid coexisting regions (0. 5< Tr < 1. 0) . The results of fitting were improved when the parameters were assumed to be linear functions of temperatures.