A Modification of α in SRK Equation of State and Vapor-Liquid Equilibria Prediction

被引：0

作者：

School of Chemistry and Chemical Engineering, Daqing Petroleum Institute, Daqing, 163318, China ^{[1
]}

不详 ^{[2
]}

机构：

[1] School of Chemistry and Chemical Engineering, Daqing Petroleum Institute, Daqing

[2] Key Laboratory for Green Chemical Technology School of Chemical Engineering and Technology, Tianjin University, Tianjin

来源：

Chin J Chem Eng | 2007年 / 1卷 / 102-109期

关键词：

prediction; saturated pressure; SRK equation of state; vapor liquid equilibrium;

D O I：

10.1016/S1004-9541(07)60041-X

中图分类号：

学科分类号：

摘要：

Based on results of saturated vapor pressures of pure substances calculated by SRK equation of state, the factor α in attractive pressure term was modified. Vapor-liquid equilibria of mixtures were calculated by original and modified SRK equation of state combined with MHV1 mixing rule and UNIFAC model, respectively. For 1447 saturated pressure points of 37 substance including alkanes; organics containing chlorine, fluorine, and oxygen; inorganic gases and water, the original SRK equation of state predicted pressure with an average deviation of 2.521% and modified one 1.673%. Binary vapor-liquid equilibria of alcohols containing mixtures and water containing mixtures also indicated that the SRK equation of state with the modified α had a better precision than that with the original one. © 2007 Chemical Industry and Engineering Society of China (CIESC) and Chemical Industry Press (CIP).

引用

页码：102 / 109

页数：7

共 17 条

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