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H2O2氧化环己烯制备环氧环己烷时会产生环己酮等副产物,同时还有未反应完的环己烯。为了获得较纯的环氧环己烷需采用精馏将副产物和环己烯分离出来,精馏提纯需要相关体系的汽液平衡数据,因此采用改进的EC-2汽液平衡釜测定常压(101.33k Pa)下环己烯-环氧环己烷-环己酮三元体系汽液平衡数据。利用二元系汽液平衡数据拟合得到的Wilson方程配偶参数预测该三元体系的汽液平衡数据,并以汽相组成的误差平方和作为目标函数,用Wilson方程关联实验数据,结果表明预测值及关联值与实验值偏差较小,可满足工程上分离设计的需要。
The oxidation of cyclohexene by H2O2 to cyclohexene oxide produces by-products such as cyclohexanone as well as unreacted cyclohexene. In order to obtain pure epoxycyclohexane, the byproduct and cyclohexene should be separated by distillation, and the vapor-liquid equilibrium data of the relevant system are needed for the rectification and purification. Therefore, an improved EC-2 vapor-liquid equilibrium reactor is used to measure the atmospheric pressure (101.33kPa) cyclohexene-epoxycyclohexane-cyclohexanone ternary system vapor-liquid equilibrium data. The vapor-liquid equilibrium data of the ternary system was predicted using the spouse parameter of the Wilson equation fitted by the binary vapor-liquid equilibrium data. The Wilson equation was used to correlate the experimental data with the square sum of the square error of the vapor phase composition. The results showed that the predicted The value and the associated value and the experimental value of the deviation is small, to meet the needs of the separation of engineering design.