α-蒎烯+柠檬烯和对伞花烃+柠檬烯体系常压汽液平衡的测定与关联  

Measurement and correlation of VLE data for α-pinene+limonene and p-cymene+limonene systems under atmospheric pressure

作　　者：童张法[1] 杨征宇[1] 廖丹葵[1] 韦藤幼[1] 陈小鹏[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《化工学报》2009年第8期1877-1882,共6页CIESC Journal

基　　金：国家自然科学基金项目(30560119);广西留学回国人员科学基金项目(桂科回0448003);广西青年科学基金项目(0640001)~~

摘　　要：利用改进的Ellis平衡釜测定了α-蒎烯+柠檬烯和对伞花烃+柠檬烯两个二元体系在100.7kPa条件下的汽液平衡数据,所测数据符合热力学一致性。以压力为目标函数使用最小二乘法拟合了Liebermann-Fried、Wilson、NRTL、UNIQUAC模型能量参数,并将4个溶液模型的汽液平衡计算结果与UNIFAC模型的计算结果做比较。结果显示Liebermann-Fried模型对等压汽液平衡数据的拟合效果较精确。Vapor-liquid equilibrium （VLE） data for binary systems of α-pinene （1） ＋ （S）-（--）-limonene （2） and p-cymene （1） ＋ （S）-（--）-limonene （2） were determined under 100.7 kPa by using the modified Ellis equilibrium still. Parameters of four solution models, Liebermann-Fried, Wilson, NRTL and UNIQUAC, were calculated with the least squares method and an objective function based on the pressure. Comparisons of the VLE predictions from the four solution models above were made with the result from the UNIFAC model. The Liebermann-Fried model used to correlate the isothermal VLE data and excess molar enthalpies was found to be more accurate than the others, in predicting isobaric VLE data.

关 键 词：汽液平衡 Α-蒎烯 柠檬烯 对伞花烃 溶液模型 

分 类 号：TQ031.1[化学工程]