Optimal Modeling of Simultaneous Design and Scheduling of Multipurpose Batch Plants over Multi-Period Production with Optimal Production Split Ratio

Abstract

This paper presents a new methodology for simultaneous design and cyclic scheduling of multipurpose batch process. Two features in particular which were not explicitly addressed in the previous work are highlighted. First, the proposed design and scheduling model can address multiperiod operation. Second, production split ratio is determined in the model, while the previous research split the production ratio within a cycle according to convenience. In order to compute the solutions of the corresponding large scale MINLP problems, a decomposition methodology is presented by transforming the original MINLP problems into iterative MILP and NLP subproblems. Two numerical examples are presented to illustrate the applicability of the proposed methodology with comparison to the previous research.