Nonlinear Dynamic Modelling of Methanol-Water Continuous Distillation Column

Abstract

Methanol-water distillation column is an important unit operation in chemical processes. This research presents simple procedure of design and then dynamic model for binary continuous distillation column. This model is used to simulate the nonlinear dynamics behavior of the column, study product composition response and test effect of disturbance which takes place in feed. It plays an important role in controlling the column. The simulation results show that the effect of feed composition disturbances is greater than the effect of feed flow rate disturbances on the dynamic response behavior of product composition. The dynamic response of change in distillate composition is accompanied by dead time at different feed perturbations.