VAPOR-LIQUID-EQUILIBRIUM PROPERTIES OF CARBON-DIOXIDE PLUS ETHANOL MIXTURE AT HIGH-PRESSURES

被引：46

作者：

TANAKA, H ^{[1
]}

KATO, M ^{[1
]}

机构：

[1] NIHON UNIV,FAC ENGN,DEPT IND CHEM,KORIYAMA,FUKUSHIMA 963,JAPAN

来源：

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN | 1995年 / 28卷 / 03期

关键词：

PHYSICAL PROPERTY; HIGH PRESSURE; PHASE EQUILIBRIUM; SUPER CRITICAL; DENSITY; CARBON DIOXIDE; ETHANOL; EXPERIMENTAL APPARATUS;

D O I：

10.1252/jcej.28.263

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

An experimental apparatus equipped with three density meters was newly developed for measuring vapor-liquid-liquid phase separation properties at high pressures. Coexisting phase composition and saturated density of each phase can be measured by means of the present apparatus with a maximum temperature of 400 K and pressure of 20 MPa, The phase compositions of carbon dioxide + ethanol mixture and their densities at high pressures were measured at 308.15 K with the apparatus. The sensitivity and absolute reliability of the equilibrium compositions appear to be 0.0001 and 0.001 mole fractions, respectively. The accuracy of saturated densities is 0.1 kg/m(3). The equilibrium compositions obtained in the present study were correlated with the pseudocubic equation of state previously proposed by the authors and the Soave-Redlich-Kwong equation of state. Saturated densities obtained in the present study were further evaluated by the equations of state with the interaction parameters determined from vapor-liquid equilibrium data.

引用

页码：263 / 266

页数：4

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