Optimal Operation and Control of Divided Wall Column

摘要

In this paper, possible modes of optimal operations of the three-product divided wall column have been discussed. These modes differ in terms of the given energy price (expensive/cheap) and given product purity constraints. In addition, the control structure scheme for one of these modes has been proposed. In this mode energy is assumed to be cheap and product purity specifications are not fixed. Since, product purity specifications are not fixed, there are three unconstrained degrees of freedom in the column for which the self-optimizing control structure has been proposed.