微量水-碳四二组分物系汽液平衡数据的测定与关联  

Measuring and Correlating of Vapor-Liquid Equilibrium Data of Trace Water-C4-Fraction System

作　　者：张旸[1] 李东风[1] 杨元一[2] 

机构地区：[1]中国石化北京化工研究院,北京100013 [2]中国化工学会,北京100029

出　　处：《石油化工》2013年第10期1130-1136,共7页Petrochemical Technology

摘　　要：采用高压汽液平衡装置,在291.15 K下,测定了微量水-异丁烷、微量水-正丁烷、微量水-1-丁烯、微量水-顺-2-丁烯、微量水-反-2-丁烯5个二组分物系的汽液平衡数据。所测得的汽液平衡数据均符合热力学一致性检验,采用PR方程对实验数据进行关联,得到5个二组分物系在291.15 K下的二元交互作用参数。实验结果表明,采用PR方程进行拟合计算,5个二组分物系的汽相质量分数计算值与实验值的平均相对偏差分别为2.23%,2.36%,2.59%,1.96%,2.14%;PR方程可用于微量水与碳四组分的工程热力学计算。The vapor-liquid equilibrium data of 5 binary systems at 291.15 K, namely trace water- isobutene, trace water-n-butane, trace water-1-butene, trace water-cis-2-butene and trace water- trans-2-butene, were measured by vapor-liquid equilibrium measuring apparatus. The experimental data which passed the thermodynamic consistency test were correlated by the PR equation and the interactive coefficients of the 5 binary systems at 291.15 K were obtained. The results showed that the calculated data by the PR equation were in accordance with the experiment data, the average relative errors of the mass fractions were 2.26%, 2.36%, 2.59%, 1.74% and 2.14%, respectively, and the PR equation could meet the demand of current engineering design.

关 键 词：炼厂干气 微量水-碳四二组分物系 高压汽液平衡 PR方程 

分 类 号：TQ026[化学工程]