A multi-level simulation approach for the crude oil loading/unloading scheduling problem

Document Type

Conference Proceeding

Publication Date

8-31-2010

Abstract

An integrated optimization approach for crude operations scheduling and production for refineries is presented. The production process is composed of a pre-fractionator, crude, and vacuum distillation columns. It is modeled as an NLP. The scheduling problem is composed of unloading operations and simultaneous blending and charging of crude distillation units. It is modeled as a MILP. The nonlinear simulation model for the production process is used to derive individual crude costs for Dubai and Masila crudes. This is performed using multiple linear regressions of the individual crude oil flow rates around the crude oil percentage range allowed by the production facility. These individual crude costs are then used to derive a linear cost function that is optimized in the MILP scheduling model, along with logistics costs. This integrated approach can lead to a cost function in the crude scheduling problem capable of including production level cost. This is an abstract of a paper presented at the AIChE 2010 Spring National Meeting (San Antonio, TX 3/21-25/2010).

Publication Source (Journal or Book title)

10AIChE - 2010 AIChE Spring Meeting and 6th Global Congress on Process Safety

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