Planning and Scheduling Continuous Operations in the Process Industries
- 2.7k Downloads
In this paper we consider the short-term production planning of multiproduct continuous plants in the process industries. This problem quite naturally decomposes into a planning problem of optimizing the operating conditions and processing times of the continuous tasks and a scheduling problem, which consists in allocating multipurpose processing units, input materials, and storage space over time to the resulting operations. The planning problem can be formulated as a nonlinear program of moderate size. Due to constraints on material availability and storage capacity for intermediate products, classical schedule-generation schemes cannot be applied to the scheduling problem. That is why we propose a new two-phase approach dealing with the two types of constraints separately. Computational experience with the decomposition approach is reported.
Unable to display preview. Download preview PDF.
- 7.Mockus L, Reklaitis GV (1999) Continuous time representation approach to batch and continuous process scheduling: 1. MINLP formulation. Computers and Chemical Engineering 26:687–695Google Scholar
- 12.Schwindt C (2005) Resource Allocation in Project Management. Springer, Berlin.Google Scholar
- 13.Schwindt C, Trautmann N (2004) A priority-rule based method for batch production scheduling in the process industries. In: Ahr D, Fahrion R, Oswald M, Reinelt G (eds) Operations Research Proceedings 2003, Springer, Berlin, pp 111–118Google Scholar
- 14.Sourd F, Rogerie J (2002) Continuous filling and emptying of storage systems in constraint-based scheduling. In: Proceedings of the Eighth International Workshop on Project Management and Scheduling, Valencia, pp 342–345Google Scholar