General Disjunctive Model for the Retrofit of Multiproduct Batch Plants

J.M. MONTAGNA; A.R. VECCHIETTI

Foundations of Computer-Aided Process Operations (FOCAPO 2003)

CACHE Publications

Año: 2003; p. 481 - 485

The retrofit of multiproduct batch plants treats the modification of the original configuration of the plant to satisfy new production conditions (new products, new demand pattern, etc.). A disjunctive model is presented to solve this problem that includes all the usual alternatives in this kind of problems. A disjunction is generated for each batch stage considering all the feasible configuration alternatives for old and new units. Each disjunction term contains all constraints to model the batch stage options: operation time, units sizing and cost, etc. In a similar way, a disjunction is generated for the allocation of intermediate storage tanks. Several examples were solved, the computational performance of this approach is compared with the conventional formulation.