碳酸二乙酯-甲苯二元体系相平衡数据的测定与关联  

Measurement and correlation for vapor-liquid equilibrium data of diethyl carbonate-toluene binary system

作　　者：赵霞[1,2] 杨勇[3] 

机构地区：[1]陕西科技大学化学与化工学院,陕西西安710021 [2]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021 [3]陕西科技大学理学院,陕西西安710021

出　　处：《天然气化工—C1化学与化工》2010年第1期76-78,共3页Natural Gas Chemical Industry

基　　金：陕西科技大学自然科学基金项目(2x09-14)

摘　　要：采用双循环汽液平衡釜测定了101.3kPa下碳酸二乙酯-甲苯二元体系的汽液平衡数据。实验数据使用Herington面积积分法检验符合热力学一致性。运用Matlab中的非线性最小二乘法程序,对二元汽液平衡的Wilson和NRTL模型进行参数计算,利用关联出的模型参数计算相应的汽相组成,并与实验值比较,二者符合良好,这为碳酸二乙酯-甲苯体系的热力学研究提供了基础数据。Vapor-liquid equilibrium （VLE） data of diethyl carbonate （DEC）＋toluene binary system were measured by double circulating vapor-liquid equilibrium caldron. The VLE data were tested by Herrington method and showed satisfying thermodynamic consistency. The parameters of Wilson and NRTL model for binary vapor-liquid equilibrium were calculated by Mat.lab non-linear least squares method, and then used to calculate the vapor phase compositions. The calculated results were quite consistent with the experimental data. The data obtained could be used for thermodynamic study of DEC ＋toluene binary system.

关 键 词：碳酸二乙酯 甲苯 汽液平衡 Wilson模型 NRTL模型 

分 类 号：TQ021.2[化学工程]