A mixed integer programming approach for scheduling commodities in a pipeline

A mixed integer programming approach for scheduling commodities in a pipeline

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Article ID: iaor2006454
Country: Netherlands
Volume: 28
Issue: 1/2
Start Page Number: 171
End Page Number: 185
Publication Date: Jan 2004
Journal: Computers and Chemical Engineering
Authors: , ,
Keywords: manufacturing industries, programming: integer
Abstract:

This paper addresses the problem of developing an optimisation structure to aid the operational decision-making of scheduling activities in a real-world pipeline scenario. The pipeline connects an inland refinery to a harbour, conveying different types of oil derivatives. The optimisation structure is developed based on mixed integer linear programming (MILP) with uniform time discretisation, but the MILP well-known computational burden is avoided by the proposed decomposition strategy, which relies on a auxiliary routine to determine temporal constraints, two MILP models, and a database. The scheduling of operational activities takes into account product availability, tankage constraints, pumping sequencing, flow rate determination, and a variety of operational requirements. The optimisation structure main task is to predict the pipeline operation during a limited scheduling horizon, providing low cost operational procedures. Illustrative instances demonstrate that the optimisation structure is able to define new operational points to the pipeline system, providing significant cost saving.

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