MODELLING AND SIMULATION OF REACTIVE DISTILLATION SYSTEMS USING MATLAB AND ASPEN PLUS

  • J.O. Bamikole
  • O. Taiwo
Keywords: Modeling, MATLAB, Aspen Plus, Reactive distillation, MTBE, ETBE, Methyl Acetate

Abstract

A systematic but simple approach for modeling reactive distillation columns using the Material
Equilibrium, Summation and Heat (MESH) equations was developed. The unsteady state model
involves Differential Algebraic Equations (DAE), in order to avoid initial value and convergence
error, the solution of a model with more simplifying assumptions was used as initial values for the
complicated model. The model was simulated in MATLAB using the solver ode15s with MTBE,
ETBE and methyl acetate reactive distillation systems as case studies. The results of the model
are very similar to those obtained from Aspen Plus simulation and the literature. The model was
used to study the effect of different reaction kinetics and activity models on the compositions,
temperatures, activity coefficients, percentage purity and percentage conversion in the column.
The model is simple, easy to implement without complicated algorithm, useful in studying,
simulating and predicting reactive distillation systems with no initial value problem and
convergence error.

Author Biographies

J.O. Bamikole

Process Systems Engineering Laboratory, Obafemi Awolowo University, Ile-Ife, Nigeria.

O. Taiwo

Process Systems Engineering Laboratory, Obafemi Awolowo University, Ile-Ife, Nigeria.

Published
2019-07-23