A Hybrid CP/MILP Approach for Big Size Scheduling Problems of Multiproduct, Multistage Batch Plants

NOVARA, FRANCO MATÍAS; HENNING, GABRIELA

Computer-Aided Chemical Engineering

Elsevier

Lugar: Copenague; Año: 2015 vol. 37 p. 2027 - 2032

This contribution presents a novel CP/MILP hybrid approach aimed at solving large size multiproduct, multistage batch plants scheduling problems. This three-phase approach accounts for many real world features. In addition, production orders requiring several batches of each product can be fulfilled by operating in a campaign mode, as it occurs in many industrial facilities. Numerical results show that for large scale examples the approach can perform better than standalone MILP and CP models and can solve problems that could not be solved with either of these methods alone.