乙醇-环己烷-水汽液平衡数据的测定与关联

Vapour liquid equilibrium of ethanol-cyclohexane-water system

用鼓泡平衡釜测定了乙醇 环己烷 水体系在 35℃ ,5 0℃ ,6 5℃的汽液平衡数据 ,用NRTL方程进行了关联 ,得到环己烷 水的模型参数 ,并预测了 2 丙醇 环己烷 水、四氢呋喃 环己烷 水体系的汽液平衡数据。关联气相总平均偏差为 0 .0 2 0 6 ,两个体系的平均预测偏差分别为 0 .0 15 3和 0 .0 118。

The vapor liquid equilibrium data of ternary system ethanol cyclohexane water at 35 ℃, 50 ℃ and 65 ℃ were experimentally measured with a bubble equilibrium still. The data were correlated with NRTL model and the parameters of binary system cyclohexane water were acquired. The prediction of the VLE data of systems 2 propanol cyclohexane water and furanidine cyclohexane water were also made. Results showed that the total mean correlation deviation of y for system ethanol cyclohexane water is 0.020 6, and the mean prediction deviations of y for systems 2 propanol cyclohexane water and furanidine cyclohexane water are 0.015 3 and 0.011 8 respectively.