常压下丙酮-异丙醇-水体系汽液平衡测定与关联

发布时间：2018-04-06 23:24

  本文选题：丙酮　切入点：异丙醇　出处：《化学工程》2017年12期

【摘要】：采用单级循环汽液平衡装置测定了常压下丙酮-异丙醇-水体系中丙酮-异丙醇、丙酮-水、异丙醇-水二元及丙酮-异丙醇-水三元体系的汽液平衡数据,采用Herington方法对二元汽液平衡数据进行热力学一致性检验。分别以Wilson,NRTL及UNIQUAC为相平衡模型,采用最小方差法对二元汽液平衡数据进行关联,由关联的3对二元体系模型参数计算三元体系的汽液平衡数据,并与实验值进行比较。结果表明:计算值与实验值的相对偏差均≤5%,说明实验值与计算值一致,其中UNIQUAC模型误差较小。该结果为丙酮-异丙醇-水混合物的分离提供了一定基础数据。
[Abstract]:The vapor-liquid equilibrium data of acetone-isopropanol-water system, acetone-isopropanol, acetone-water, isopropanol-water binary system and acetone-isopropanol-water ternary system were determined by a single stage circulating vapor-liquid equilibrium device.The thermodynamic consistency of binary vapor-liquid equilibrium data was tested by Herington method.Using Wilson's NRTL and UNIQUAC as phase equilibrium models, the minimum variance method is used to correlate the binary vapor-liquid equilibrium data. The vapor-liquid equilibrium data of the ternary system are calculated by the correlated three pairs of binary system model parameters, and compared with the experimental data.The results show that the relative deviation between the calculated value and the experimental value is 鈮，

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