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8451920 
Journal Article 
重整抽余油加氢-分离实验研究及工业模拟 
Gong, T; Liu, YJ; Xu, G; Yang, JH 
2020 
China National Chemical Information Center 
40 
6 
199-203 
Chinese 
A method combining experiment with industrial simulation is employed to study the production of high purity solvent oil, such as 99% iso-hexane, 95% n-hexane and 95% n-heptane, from the reformed raffinate oil. The operating conditions of hydrogenation reactions for removing olefins and aromatics are optimized through experiments, and qualified products are obtained by distillation of the hydrogenated products. Meanwhile, five kinds of distillation processes are designed by using Aspen Plus software, and simulated and optimized by taking the lowest total annual cost (TAC) as the optimization target. The results show that the contents of olefins and aromatics in the hydrogenated products are minimum when the reaction temperature is at 150℃, the reaction pressure is 1.0 MPa, the volume ratio of hydrogen to oil is 350 and LHSV is 2.0 h-1. TAC of the optimized distillation process is US $7.502 million per year. The heat pump technology is applied on iso-hexane tower in the optimal process, which can decrease the energy cost by 40.89% and TAC by 32.14%. © 2020, China National Chemical Information Center. All right reserved. 
Distillation; Heat pump; Hydrogenation; Reformed raffinate oil; Simulation