Energy optimization for a multi-stage crude oil distillation process
Energy optimization has been a hot research topic for design and operation of crude oil distillation plants.In this work,optimum energy utilization in a multi-stage crude oil distillation process is achieved by optimizing the distillation load of each distillation column as well as the yields of side-streams of these distillation columns.A generalized multi-stage distillation energy consumption model is proposed,and the optimal distillation load distribution is arrived at through minimizing the total energy consumption.Based on the optimal distillation loads,a nonlinear programming(NLP)is then formulated to determine the yields of side-streams by maximizing the thermal exergy entered the crude oil heat exchanger network.Finally,a four-stage crude oil distillation plant with a capacity of 8000 kt/a is investigated to demonstrate the performance of the proposed method.The results show that energy consumption decreases by 1.97%and 1515.87 t/a fuel is saved,and the thermal exergy is increased by 8.21%,or 83360 GJ/a.
Energy optimization exergy analysis mathematical model crude oil distillation
Wugen Gu Bingjian Zhang Kan Wang Qinglin Chen
School of Chemistry and Chemical Engineering/Key Lab of Low-carbon Chemistry & Energy Conservation of Guangdong Province,Sun Yat-Sen University,Guangzhou,China
国际会议
桂林
英文
1-13
2013-07-16（万方平台首次上网日期，不代表论文的发表时间）