Simulation Of Three-Phase Distillation Column Using Bubble Point And Φ-Φ Approach

Most of organic compounds are partially miscible in water and due to their solubility criteria split into two liquid phases. So design of equipments that separate two liquid phase systems differ from one liquid phase system equipments. A mathematical model and a computer program have been developed to simulate three-phase distillation columns. The proposed procedure is based on linearization of equations and solving them by Newton-Raphson method. Average liquid compositions are chosen as independent variables and temperature, vapor compositions and two liquid phase compositions are obtained by three-phase bubble point calculations on each tray. For predicting thermodynamic properties, equation of state is used.