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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

ISSN号：1004-9541
期刊名称：《中国化学工程学报：英文版》
时间：0
分类：TQ223.24[化学工程—有机化工] TQ460.31[化学工程—制药化工]
作者机构：[1]Key Laboratory of Advanced Control and Optimization for Chemical Processes, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
相关基金：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）.

作者： HUANG Xiuhui ZHONG Weimin PENG Changjun QIAN Feng[1]

关键词：等压汽液平衡, 醋酸正丙酯, 醋酸甲酯, 对二甲苯, 二元体系, UNIQUAC模型, 脱水过程, 乙酸甲酯, vapor-liquid equilibrium, p-xylene, acetic acid, methyl acetate, n-propyl acetate, parameter correlation

中文摘要：

四个二进制系统(醋酸+p二甲苯，甲基醋酸盐+n丙醇醋酸盐，n丙醇醋酸盐+p二甲苯和甲基醋酸盐+p二甲苯)的蒸汽液体平衡数据仍然与埃利斯平衡在 101.33 kPa 被测量，然后 NRTL 和 UNIQUAC 模型与 hoc 模型一起在联合被使用相关并且估计这四个二进制系统的蒸汽液体平衡。除了容易引起颠簸的甲基醋酸盐 +p 二甲苯系统和由于他们的戏剧性地不同的沸腾点从采样龙头冲的液体，用相关参数的估计的二进制 VLE 结果与测量数据同意很好。由 NRTL 和 UNIQUAC 模型的关联结果在温度的平均绝对偏差和蒸汽阶段的作文上有小差别，并且由 NRTL 的结果当模特儿除了甲基醋酸盐+n丙醇醋酸盐系统比由 UNIQUAC 模型的那些稍微好，为哪个后者给更精确的关联。

英文摘要：

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.

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