Scheduling of Crude Oil Operations in Refinery without Sufficient Charging Tanks Using Petri Nets
AbstractA short-term schedule for crude oil operations in a refinery should define and sequence the activities in detail. Each activity involves both discrete-event and continuous variables. The combinatorial nature of the scheduling problem makes it difficult to solve. For such a scheduling problem, charging tanks are a type of critical resources. If the number of charging tanks is not sufficient, the scheduling problem is further complicated. This work conducts a study on the scheduling problem of crude oil operations without sufficient charging tanks. In this case, to make a refinery able to operate, a charging tank has to be in simultaneous charging and feeding to a distiller for some time, called simultaneously-charging-and-feeding (SCF) mode, leading to disturbance to the oil distillation in distillers. A hybrid Petri net model is developed to describe the behavior of the system. Then, a scheduling method is proposed to find a schedule such that the SCF mode is minimally used. It is computationally efficient. An industrial case study is given to demonstrate the obtained results. View Full-Text
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An, Y.; Wu, N.; Hon, C.T.; Li, Z. Scheduling of Crude Oil Operations in Refinery without Sufficient Charging Tanks Using Petri Nets. Appl. Sci. 2017, 7, 564.
An Y, Wu N, Hon CT, Li Z. Scheduling of Crude Oil Operations in Refinery without Sufficient Charging Tanks Using Petri Nets. Applied Sciences. 2017; 7(6):564.Chicago/Turabian Style
An, Yan; Wu, NaiQi; Hon, Chi T.; Li, ZhiWu. 2017. "Scheduling of Crude Oil Operations in Refinery without Sufficient Charging Tanks Using Petri Nets." Appl. Sci. 7, no. 6: 564.