Isobaric Vapor-Liquid Equilibrium of Binary Systems： p-Xylene ＋ （Acetic Acid, Methyl Acetate and n-Propyl Acetate） and Methyl Acetate ＋ n-Propyl Acetate in an Acetic Acid Dehydration Process

作     者：HUANG Xiuhui ZHONG Weimin PENG Changjun QIAN Feng 

作者机构：Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of Education East China University of Science and Technology Shanghai 200237 China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2013年第21卷第2期

页      面：171-176页

核心收录：

学科分类：1007[医学-药学(可授医学、理学学位)] 081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 10[医学] 

基　　金：Supported by the Major State Basic Research Development Program of China (2012CB720500)  the National Natural Science Foundation of China (U1162202  61174118) and the Shanghai Leading Academic Discipline Project (B504) 

主　　题：vapor-liquid equilibrium p-xylene acetic acid methyl acetate n-propyl acetate parameter correlation 

摘      要：The vapor-liquid equilibrium data of four binary systems (acetic acid +p-xylene, methyl acetate +n-propyl acetate, n-propyl acetate +p-xylene and methyl acetate +p-xylene) are measured at 101.33 kPa with Ellis equilibrium still, and then both the NRTL and UNIQUAC models are used in combination with the HOC model for correlating and estimating the vapor-liquid equilibrium of these four binary systems. The estimated binary VLE results using correlated parameters agree well with the measured data except the methyl acetate +p-xylene system which easily causes bumping and liquid rushing out of the sampling tap due to their dramatically different boiling points. The correlation results by NRTL and UNIQUAC models have little difference on the average absolute deviations of temperature and composition of vapor phase, and the results by NRTL model are slightly better than those by UNIQUAC model except for the methyl acetate +n-propyl acetate system, for which the latter gives more accurate correlations.