水—1，2－丙二醇二元体系在101．325kPa下的汽液平衡

Vapor-Liquid Equilbrium for Water -1, 2-Propanediol Binary System at 101.325 kPa

用自制的汽液平衡釜测定了水—１，２－丙二醇二元体系在１０１．３２５ｋＰａ下全浓度范围的汽液平衡数据。所测数据通过了热力学一致性校验；并用最小二乘法回归Ｗｉｌｓｏｎ和ＮＲＴＬ方程参数，由于所测温度范围较宽，参数表示为温度的线性关系进行拟合，所得计算值与实验值符合良好。

This paper describes the measurement of the VLE data of water-1,2 propanediol binary system at 101.325 kpa and in the range of whole concentrations by using an equilibrium still which was designed by ourselves.The thermodynamic consistency of the set of data has been tested and a satisfactory result was obtained. The parameters of Wilson and NRTL model for the binary system were related by the least square method,expressed as the linear function of temperature.The calculated values were in good agreement with the measured data.