Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10271278 | Fluid Phase Equilibria | 2005 | 6 Pages |
Abstract
A computer-aided equipment for precise measurements of vapour-liquid equilibrium (VLE) data at normal and low pressures using the dynamic method will be introduced. The apparatus consists of a circulation still which allows isothermal and isobaric measurements. The digital measurement and control system is accomplished by a multimeter coupled with a PC via IEEE-card. The quality of the measurement data is demonstrated by a comparison of the measured vapour pressure data of the pure substances toluene, n-octane and cyclohexylamine with the vapour pressure equation of Daubert and Danner. Furthermore, vapour-liquid equilibrium data were measured in the binary systems cyclohexylamine + aniline or water or n-octane. The measured data were regressed according to the activity coefficient models NRTL, UNIQUAC and to the Elliott-Suresh-Donohue-equation of state (ESD-EOS).
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Andreas Grenner, Mandy Klauck, Jürgen Schmelzer,