A MEASUREMENT OF VAPOR-LIQUID EQUILIBRIA AT EXTREME DILUTION

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

KAZUO KOJIMA¹  KENJI OCHI¹ 

[1] Department of Industrial Chemistry, Nihon University

关键词: Vapor Liquid Equilibrium;    Binary System;    Ebulliometer;    Extreme Dilution;    Aqueous Alcohol Solution;    Activity Coefficient;   

DOI  :  10.1252/jcej.20.6

来源: Maruzen Company Ltd

【 摘 要 】

References(7)Cited-By(6)Vapor-liquid equilibrium (VLE) data for a mixture at extreme dilution in the range 10-2 to 10-5 mole fraction are necessary in a high-grade purification by distillation. However, it is difficult to measure the VLE data in such a dilute concentration range by the conventional methods. This paper presents a method for measuring the VLE data at extreme dilution using the ebulliometer, by which bubble temperatures of the mixture of charged composition can be accurately measured by taking account of the vapor-phase holdup. This method has been applied to measurement of VLE data for four binary systems of water with alcohols as dilute solutes at 101.325 kPa.

【 授权许可】

Unknown