常压下异戊二烯-正戊烷二元气液平衡数据的测定和关联  

Measurement and correlation of vapor-liquid equilibrium data for isoprene-n-pentane binary system under normal pressure

作　　者：李文秀[1] 杜艳[1] 张志刚[1] 贾鹏[1] 

机构地区：[1]沈阳化工大学化学工程学院,辽宁沈阳110142

出　　处：《化学工程》2014年第3期29-32,38,共5页Chemical Engineering(China)

基　　金：国家自然科学基金项目资助项目(21076126);辽宁省高等学校优秀人才支持计划资助项目(LR2012013)

摘　　要：在常压(100 kPa)下,用气液平衡装置测定了异戊二烯-正戊烷二元体系气液平衡数据,并对所测得的数据进行热力学一致性检验,结果表明实验数据符合热力学一致性。分别用Wilson模型、NRTL模型和UNIQUAC模型对数据进行关联,用最小二乘法求出了二元体系模型参数并用这些参数来计算了气相组成y与泡点温度T,计算结果与实验数据吻合较好,表明所用的模型适于异戊二烯-正戊烷体系,可以满足工程上分离设计的需要。Under the different liquid-phase compositions,the isobaric vapor-liquid equilibrium data of isoprene-n-pentane binary system were determined under normal atmospheric pressure （100 kPa）by using a vapor-liquid equilibrium device,and the thermodynamic consistencies of the phase equilibrium data were examined.The results show that the experimental data satisfy the examination of thermodynamic consistencies.The vapor-liquid equilibrium data were correlated by Wilson equation,NRTL equation and UNIQUAC equation,and the parameters models were calculated through the least square method,and then the parameters obtained were used to calculate the vapor-phase compositions y and the bubble point T.The calculation results agree well with the experimental data,which indicate that the models are suitable for the isoprene-n-pentane binary system and the engineering separation design.

关 键 词：气液平衡 异戊二烯 正戊烷 热力学模型 

分 类 号：O642.42[理学—物理化学]