Theoretical Studies on Critical Properties of Binary System with Supercritical Carbon Dioxide

被引：0
|
作者：
ZHANG Jing chang
机构：
来源：
Chemical Research in Chinese Universities | 2003年 / 01期
基金：
中国国家自然科学基金;
关键词：
Supercritical fluid; Critical properties; Binary system; Carbon dioxide;
D O I：
暂无
中图分类号：
TQ02 [化工过程（物理过程及物理化学过程）];
学科分类号：
081701 ; 081704 ;
摘要：
A new expression of mixing rule is suggested according to the Mayson′s mixing rule in this paper, which adopts the Redlich Kwong cubic equation of state and the modified Chueh Prausnitz method to calculate the experiment critical points of six binary mixtures CO 2+toluene, CO 2+cyclohexane, CO 2+ n butanal, CO 2+ i butanal , CO 2+methanol, CO 2+ethanol. The coefficients of interaction parameter in the expression of mixing rule were optimized from experimental data. The calculated results of critical temperature and critical pressure meet the experiment data well. The maximum relative errors of temperature and pressure between the calculation results and experiment data are 1 493% and 5 2236% respectively, indicating that the proposed expression of mixing rule is reasonable. This may provide a fundamental method for studying and predicting the properties of supercritical fluids.
引用
收藏
页码：80 / 84
页数：5
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