The equations have been implemented in SIMULINK; MATLAB and the model predicts the process variables rather well over time. During the first reaction; the model is not able to reproduce the jacket temperature to the desired accuracy; but the other variables have acceptable predictions. An optimization problem is formulated; wherein the total batch time is minimized under the constraints of the differential algebraic equation system and other constraints originating from the process; for instance limited pump capabilities.
As a first step in optimizing the operation of the process; a series of simulations has been performed in order to decrease the total batch time. It is concluded that a 10 % shorter batch time than today is possible if the quality is discarded; and a 5 % shorter batch time can be reached while using the existing requirements for the quality.
Keywords: Semi-batch reactor; simulation; optimization