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Cyclic production and cleaning scheduling of multiproduct continuous plants

DOI: 10.1016/s1570-7946(02)80130-4
  • Computer Science
  • Mathematics


Abstract The objective of this paper is to extend previous scheduling models (Pinto and Grossmann, 1994; Alle and Pinto, 2001) based on continuous time representation to include cleaning considerations. The proposed mixed integer non-linear programming (MINLP) model aims at simultaneously scheduling production and cleaning tasks of multiproduct multistage plants with performance decay. The resulting mathematical model has a linear objective function to be maximized over a convex solution space thus allowing global optimum to be obtained with an Outer Approximation algorithm. A case study demonstrates the applicability of the model and its potential benefits in comparison with a hierarchical approach.

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