The simulation and optimization of industrial-scale simulated moving bed for para-xylene purification from a mixture of C8 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.
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Zhang, Z., Mazzotti, M., and Morbidelli, M., J. Chromatogr. A, 2003, vol. 989, p. 95. https://doi.org/
Yu, H.W. and Ching, C.B., AICHE J., 2002, vol. 48, p. 2240. https://doi.org/10.1002/aic.690481014
Kawajiri, Y. and Biegler, L.T., AICHE J., 2006, vol. 52, p. 1343. https://doi.org/10.1002/aic.10736
Kurup, A.S., Hidajat, K., and Ray, A.K., Ind. Eng. Chem. Res., 2005, vol. 44, p. 5703. https://doi.org/10.1021/ie0488694
Rao, R.V., Savsani, V.J., and Vakharia, D.P., Comp. Aided Des., 2011, vol. 43, p. 303. https://doi.org/10.1016/j.cad.2010.12.015
Rao, R.V., Savsani, V.J., and Vakharia, D.P., Inf. Sci., 2012, vol. 183, p. 1. https://doi.org/10.1016/j.ins.2011.08.006
Niknam, T., Eng. Appl. Artif. Intell., 2012, vol. 25, p. 1577. https://doi.org/10.1016/j.engappai.2012.07.004
Rao, R.V. and Patel, V., Appl. Math. Model., 2013, vol. 37, p. 1147. https://doi.org/10.1016/j.apm.2012.03.043
Nayak, M.R., Nayak, C.K., and Rout, P.K., Procedia Tech., 2012, vol. 6, p. 255. https://doi.org/10.1016/j.protcy.2012.10.031
Minceva, M. and Rodrigues, A., Ind. Eng. Chem. Res., 2002, vol. 41, p. 3454. https://doi.org/10.1021/ie010095t
Yang, M.L., Wei, M., Hu, R., Ye, Z.C., and Qian, F., J. Chem. Ind. Eng. (China), 2013, vol. 64, p. 4335. https://doi.org/10.3969/j.issn.0438-1157.2013.12.010
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).
The authors declare no conflict of interest requiring disclosure in this article.
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Yang, M.L., Hu, R., Long, J. et al. Modeling and Optimization of Simulated Moving Bed for Paraxylene Purification. Pet. Chem. 61, 214–219 (2021). https://doi.org/10.1134/S0965544121020146
- simulated moving bed