This work addresses the problem of LPG production and inventory management of a real world refinery. The problem concerns decisions related to LPG and LPG byproduct production strategies and decisions related to the selection of storage facilities that are used to receive these products and to feed the product pipeline. We develop a general framework for the modeling of similar scheduling problems. The result is a mixed integer optimization model with non-uniform time slots that can generate a short-term schedule for refinery LPG management. This schedule, spanning a horizon of approximately one-week, takes into account volume constraints as well as operational rules.
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