用Peng－Robinson方程计算DMF－苯－烷烃间汽－液平衡

Calculation of vapor liquid equilibrium for solvent of DMF, benzene and alkane system by Peng Robinson equation

用Ｐｅｎｇ－Ｒｏｂｉｎｓｏｎ方程对ＤＭＦ和苯及其烷烃杂质间的汽液平衡（ＶＬＥ）进行了计算，获得了二元交互作用参数Ｋ－ｉｊ，由此推算了含ＤＭＦ、苯及烷烃杂质的三元体系的ＶＬＥ，并与ＮＲＴＬ和ＵＮＩ－ＱＵＡＣ模型计算进行了比较。

Binary interaction coefficients ij were obtained on the calculation of vapor liquid equilibrium (VLE) for systems containing DMF, benzene and alkane by Peng Robinson equation. Some ternary systems containing these components were predicted using above parameters and the results were compared with that of the NRTL and UNIQUAC model calculated.