水-醋酸-N-甲基吡咯烷酮体系等压汽液平衡研究  

Isobaric vapor-liquid equilibria for water-acetic-acid-N-methylpyrrolidone

作　　者：畅伟贤[1] 管国锋[1] 姚虎卿[1] 

机构地区：[1]南京工业大学化学化工学院,江苏南京210009

出　　处：《化学工程》2007年第1期40-44,共5页Chemical Engineering(China)

摘　　要：用改进的Rose釜测定了醋酸-N-甲基吡咯烷酮、水-醋酸-N-甲基吡咯烷酮在101.33 kPa下的等压汽液平衡数据。醋酸-N-甲基吡咯烷酮体系的汽液平衡数据通过了热力学一致性检验。用NRTL、W ilson和UNIQUAC模型对醋酸-N-甲基吡咯烷酮体系的汽液平衡数据进行了关联,得到了相应的模型参数。用6组文献报道的水-醋酸体系的NRTL模型参数、4组水-N-甲基吡咯烷酮体系的模型参数及关联得到的醋酸-N-甲基吡咯烷酮体系的模型参数对三元体系的汽液平衡数据进行了预测,筛选出9组较佳的模型参数,获得了较优的预测结果。Isobaric vapor-liquid equilibria （VLE） data for acetic acid-N-methylpyrrolidone and water-acetic acid- N-methylpyrrolidone systems was measured at 101.33 kPa using an improved Rose still. The quality of the measured binary data was verified by using the thermodynamic consistency test. The binary data was correlated by NRTL, Wilson and UNIQUAC models and the interaction parameters were got. The 6 groups of NRTL interaction parameters from the literatures for water-acetic acid system, 4 groups for water-N-methylpyrrolidone system and the obtained NRTL interaction parameters for acetic acid-N-methylpyrrolidone system were used to predict the ternary VLE data. 9 groups of better interaction parameters combinations were screened out and the ternary predicted values agree well with the experimental values.

关 键 词：水 醋酸 N-基吡咯烷酮 汽液平衡 

分 类 号：O642.42[理学—物理化学]