文献类型：期刊文献

英文题名：Modeling and Optimization of Simulated Moving Bed for Paraxylene Purification

作者：Yang, M. L.[1];Hu, R.[1];Long, J.[1];Lv, Y. J.[2];Ye, Z. C.[1];Li, Z.[1];Zhong, W. M.[1]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Control & Optimizat Chem Proc, Minist Educ, Shanghai 200237, Peoples R China;[2]Sinopec Shanghai Petrochme Co Ltd, IT Serv Ctr, Shanghai 200540, Peoples R China

年份：2021

卷号：61

期号：2

起止页码：214

外文期刊名：PETROLEUM CHEMISTRY

收录：;EI(收录号：20210709934100);WOS:【SCI-EXPANDED(收录号:WOS:000617409500005)】；

基金：This work was supported by National Natural Science Foundation of China (Basic Science Center Program: 61988101), International (Regional) Cooperation and Exchange Project (1720106008) and Natural science foundation of China (61873093, 61803158).

语种：英文

外文关键词：MOTLBO; optimization; simulated moving bed; operation

摘要：The simulation and optimization of industrial-scale simulated moving bed for para-xylene purification from a mixture of C-8 aromatics are presented. The separation process was modeled using true moving bed modeling strategy. The multi-objective teaching-learning-based optimization algorithm (MOTLBO) is improved by introducing alpha constrained technique, which is employed to optimize the yield of PX and consumption of desorbent. The improved MOTLBO has advantages in both convergence and distribution as compared to NSGA-II and MOTLBO. The optimized results suggest that the extract flowrate and consumption of desorbent should be increased, and simultaneously the step time and raffinate flowrate keep constant, so as to achieve a higher yield of PX.