SHORT-TERM SCHEDULING METHOD OF CRUDE OIL OPERATIONS IN REFINERY FOR SYSTEMS WITH TWO TRANSPORTATION PIPELINES

摘要

#$%^&*AU2014100521A420140619.pdf#####Abstract: In some refineries, it needs to process both low and high fusion point crude oil types. For such refineries, often the storage tanks are located at two geographically different sites, one for low fusion point crude oil and the other for high fusion point crude oil. With two storage tank sites, there are two pipelines for different types of crude oil transportation. The constraints resulted from the high fusion point oil transportation are difficult to deal with. The present invention conducts the scheduling analysis for such a system in the control theory perspective. Due to the hybrid property of the process, the system is modeled by a hybrid Petri net. With this model, schedulability conditions are obtained and scheduling method is presented, and one can transport as much high fusion point crude oil with a single setup as possible. Furthermore, efficient algorithms are presented for calculating the amount of high fusion point crude oil that can be transported. Abstract Figure: FIG. 2Refining Scheduling Schedulability Analysis Detailed Scheduling Hybrid Petri Net Model The Crude Oil Operation Process FIG I Crude oil operations Production a Pipeline #2 Pipeline #1 Site #1 Ca ing Distillers production landr pushed C aru i trg tanks units hedr pout FIG 2 Docket No.: UM1139AUOO 39