Experimental validation of an equilibrium stage model for three-phase distillation

Abstract:
An experimental study with ethanol/water/cyclohexane has been carried out at a laboratory tray column in order to validate the equilibrium stage model for three-phase distillation columns. Composition profiles were measured both at total reflux and in the production case. Comparisons of experimental data with simulation results show generally a good agreement and an overall column efficiency of about 70% but also indicate kinetic phenomena motivating the development of detailed nonequilibrium models.

Keywords:
Three-phase distillation, heterogeneous azeotropic distillation, equilibrium stage modelling, experimental validation.

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