应用VDW方程的Soave修正式计算极性混合物的热力参数

Calculation of thermodynamical parameters for polar mixtures by soavemodified formulae of VDW equation

选用G.S.Soave对于Van Der Waals方程的两种修正式和H.Vidal混合模型,编写了计算单组分和混合物的热力参数和汽液平衡常数的电算程序,并对含氢系统和极性混合物进行了校核计算。结果表明,该程序对单组分、含氢系统和极性混合物的计算具有较满意的精度,能满足设计计算的需要,同样具有如同PR、GDSRK、BWSR等方法的简单、快速、输入数据较少等优点。本程序对多组分的分离计算,特别是液化石油气和液化天然气的轻烃回收系统具有实用意义。

The computer program of thermodynamical parameters and vaporliquid equilibrium constants for single-components and mixtures were made by selecting G.S.Soaye's two modified formulae of Van Der Waals equation and by H.Vidal mixing model. Checkout calculations of hydrogencontaining systems and polar mixtures were carried out.The results show that the program can meet the needs of designing calculations with the advantages of simplicity, rapidity and less input data.