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Planning and Scheduling Continuous Operations in the Process Industries

  • Sascha Herrmann
  • Christoph Schwindt
Conference paper

Abstract

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.

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Copyright information

© Physica-Verlag Heidelberg 2007

Authors and Affiliations

  • Sascha Herrmann
    • 1
  • Christoph Schwindt
    • 1
  1. 1.Institute of Management and EconomicsClausthal University of TechnologyClausthal-Zellerfeld

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