醋酸仲丁酯—N,N二甲基甲酰胺、醋酸仲丁酯—乙腈二元体系的等压汽液平衡  

Isobaric Vapor-Liquid Equilibria of Sec-Butyl Acetate- N,N-Dimethylformamide and Sec-Butyl Acetate-Acetonitrile Binary Systems

作　　者：马守涛[1] 姜占坤[1] 崔玉[1] 王磊[2] 

机构地区：[1]济南大学化学化工学院,山东济南250022 [2]天津大学化工学院,天津300072

出　　处：《高校化学工程学报》2016年第4期961-966,共6页Journal of Chemical Engineering of Chinese Universities

基　　金：山东省优秀中青年科学家科研奖励基金(BS2014NJ020);山东省高等学校科技计划项目(J14LC06)

摘　　要：采用Ellis汽液平衡釜测得了在101.3 k Pa下醋酸仲丁酯—N,N二甲基甲酰胺、醋酸仲丁酯—乙腈二元体系的等压汽液平衡数据,实验数据经Herington方法检验,均通过了热力学一致性检验。实验数据分别用NRTL,UNIQUAC和Wilson活度系数模型进行关联,实验结果显示这三种模型均适用于醋酸仲丁酯—N,N二甲基甲酰胺、醋酸仲丁酯—乙腈二元体系。这三种活度系数模型都比较适合此两个二元体系并且显示了较好的收敛性,因此,该实验数据可为这两个二元体系的精馏分离提供了可靠的依据。Isobaric vapor-liquid equilibrium （VLE） data of sec-butyl acetate-N,N-dimethyl formamide and sec-butyl acetate- acetonitrile binary systems were measured at 101.3 kPa with an Ellis vapor liquid equilibrium still, and the experimental data passed the thermodynamic consistency test using the Herington method. Moreover, the experimental equilibrium data were correlated by Non-Radom Two-Liquid（NRTL）, Wilson and Universal Quasi-Chemical（UNIQUAC） activity coefficient models. The results show that all of three models （especially the NRTL model）have good agreements with the experimental data. The binary vapor-liquid equilibrium phase diagrams of sec-butyl acetate-N,N-dimethylformamide and see-butyl acetate-acetonitrile can be obtained which provide reliable data for distillation design.

关 键 词：醋酸仲丁酯 N N-二甲基甲酰胺 乙腈 汽液平衡 

分 类 号：TQ031.1[化学工程]