Korean Journal of Chemical Engineering, Vol.39, No.12, 3190-3203, December, 2022
Dynamic simulation and control of a triple column process for dimethyl carbonate-methanol separation
Separation of dimethyl carbonate/methanol azeotropic mixture by using pressure-swing distillation process has been a hot-point in the study of the synthesis process of dimethyl carbonate by urea methanolysis method. This study updates the work of the writers (Ind.Eng.Chem.Res,2013,52,11463-11478), which explores the dynamic control structure of the three-column separation dimethyl carbonate (DMC)/methanol (MeOH) process from an actual pilot plant. At first, the conventional DMC/MeOH separation process in the pilot test of the DMC synthesis process through alcoholysis of urea was described in detail. Then an optimized control structure for the entire DMC/MeOH separation unit was obtained by implementing a general heuristic design procedure. An economic analysis was performed to evaluate the optimized process. Finally, three dynamic control schemes were proposed and evaluated with several large disturbances, an improved control scheme CS3, using the multiplier blocks “QR1/F1” and “RR1” in T1, “QR1/F1” and “R/F” in both T2 and T3, outperformed CS1 and CS2 by maintaining the product specification in each column.
- Esan AO, Adeyemi AD, Ganesan S, J. Clean Prod., 257, 120561 (2020)
- Kumar P, Srivastava VC, Stangar UL, Music B, Mishra IM, Meng Y, Catal. Rev.-Sci. Eng., 63, 363 (2021)
- Labafzadeh SR, Helminen KJ, Kilpelainen I, King AWT, ChemSusChem, 8, 77 (2015)
- Selva M, Perosa A, Rodriguez-Padron D, Luque R, ACS Sust. Chem. Eng., 7, 6471 (2019)
- Tan KT, Lee KT, Mohamed AR, Fuel, 89, 3833 (2010)
- Weidlich T, Chem. Listy., 109, 594 (2015)
- Sun J, Yang B, Lin H, Chem. Eng. Technol., 27, 435 (2004)
- Li CS, Zhang XP, Zhang SJ, Xu QQ, Chin. J. Process Eng., 453 (2003)
- Wang SJ, Yu CC, Huang HP, Comput. Chem. Eng., 34, 361 (2010)
- Zhang JL, Wang F, Peng WC, Xiao FK, Wei W, Sun YH, Petrochem. Eng., 39, 646 (2010)
- Hsu KY, Hsiao YC, Chien IL, Ind. Eng. Chem. Res., 49, 735 (2010)
- Wei HM, Wang F, Zhang JL, Liao B, Zhao N, Xiao FK, Wei W, Sun YH, Ind. Eng. Chem. Res., 52, 11463 (2013)
- Zhao WB, Wang F, Peng WC, Zhao N, Li JP, Xiao FK, Wei W, Sun YH, Ind. Eng. Chem. Res., 47, 5913 (2008)
- Wang DF, Zhang XL, Wei W, Sun YH, Chem. Eng. Technol., 35, 2183 (2012)
- Wei HM, University of Chinese Academy of Sciences dissertation (2013).
- Ma XB, Liu XG, Li ZH, Xu GH, Fluid Phase Equilib., 221, 51 (2004)
- Luyben WL, Distillation design and control using AspenTM simulation, John Wiley & Sons: Inc: New York (2006).
- Perkins JD, J. Chem. Technol. Biotechnol., 46, 249 (1989)
- Turton R, Whiting WB, Shaeiwitz JA, Org. Proc. Res.-Dev., 3, 494 (1999)
- Lin YJ, Wong D, Jang SS, Ou JJ, AIChE J., 58, 2697 (2012)
- Luyben WL, AIChE J., 52, 2290 (2006)
- Luyben WL, AIChE J., 52, 623 (2006)
- Ward JD, Yu CC, Doherty MF, AIChE J., 53, 2885 (2007)
- Grassi VG, Practical Distillation Control (1992).
- Luyben WL, Ind. Eng. Chem. Res., 39, 973 (2000)
- Luyben WL, AIChE J., 57, 655 (2011)