Determination of Vapor–Liquid Equilibria at Elevated Pressures Using Ebulliometer

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Hiromasa Taguchi²  Kiyofumi Kurihara¹  Hiroyuki Matsuda¹  Jun Nakakubo¹  Katsumi Tochigi¹ 

[1] Department of Materials and Applied Chemistry, Nihon University;PreFEED Corporation

关键词: Vapor–Liquid Equilibria;    Ebulliometer;    Elevated Pressure;    NRTL Equation;    Mixon Method;   

DOI  :  10.1252/jcej.14we263

来源: Maruzen Company Ltd

【 摘 要 】

References(17)Vapor–liquid equilibria are important as the base of equipment design such as distillation and evaporation. Extensive vapor–liquid equilibrium data have been reported to date. Distillation processes under elevated pressures (100 to 1,000 kPa) for polar-components systems attract attentions recently and the related vapor–liquid data are becoming more important. However, such data for non-hydrocarbon systems are not sufficient. This article deals with the measurement of bubble point using an ebulliometer operated at elevated pressures. Firstly the bubble point for benzene+cyclohexane system have been measured at 10 to 400 kPa. The vapor–liquid equilibria have been determined using two methods, i.e. Mixon method and NRTL equation. Finally, a comparison between the calculated azeotrope for benzene+cyclohexane system and reported data was done to confirm the validity of estimation results.

【 授权许可】

Unknown