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Received March 30, 2016
Accepted February 2, 2017
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Process simulation for the recovery of lactic acid using thermally coupled distillation columns to mitigate the remixing effect
Dept. of Chemical Engineering, Kyung Hee University, 1732 Deogyeong-daero, Yongin 17104, Korea
bslee@khu.ac.kr
Korean Journal of Chemical Engineering, May 2017, 34(5), 1310-1318(9), 10.1007/s11814-017-0009-1
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Abstract
The objective of this study was to find process simulations of the plant-wide scale lactic acid recovery process using thermally coupled distillation columns to mitigate the remixing effect. The remixing effect has been widely discussed because in a conventional column arrangement it induces a need for a significant amount of energy for repurification in lactic acid recovery processes. One way to overcome high energy consumption is by using thermally coupled distillation columns. This paper suggests and compares two types of thermally coupled distillation columns applied to the plant-wide scale lactic acid recovery process for removing the remixing effect considering a heavy organic impurity and lactic acid oligomerization in the process. The equilibrium stage model based on the RADFRAC module of Aspen Plus was employed for simulating the thermally coupled distillation columns. Simulation results showed that thermally coupled distillation columns can eliminate the remixing effect and reduce energy consumption compared to conventional lactic acid recovery processes.
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Christiansen AC, Skogestad S, Lien K, Comput. Chem. Eng., 21, S237 (1997)
Krolikowski L, AIChE J., 33, 643 (1987)
Fidkowski ZT, Agrawal R, AIChE J., 47(12), 2713 (2001)
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Park SC, Lee SM, Kim YJ, Kim WS, Koo YM, KSBB J., 21, 199 (2006)
Su CY, Yu CC, Chien IL, Ward JD, Ind. Eng. Chem. Res., 52, 11073 (2013)
Wang ZH, Zhao KF, Biotechnol. Bioeng., 47(1), 1 (1995)
Gonzalez MI, Alvarez S, Riera F, Alvarez R, J. Food Eng., 80(2), 553 (2007)
Liew MKH, Tanaka S, Morita M, Desalination, 101, 269 (1995)
Evangelista RL, Nikolov ZL, Appl. Biochem. Biotechnol., 57, 471 (1996)
Cockrem MCM, Johnson PD, US Patent, 5,210,296 (1993).
Woo D, Cho Y, Kim BK, Hwang H, Han M, Korean Chem. Eng. Res., 48(3), 342 (2010)
Hernandez S, Jimenez A, Comput. Chem. Eng., 23(8), 1005 (1999)
Khalifa M, Emtir M, Clean. Techn. Environ. Policy, 11, 107 (2009)
Hernandez S, Segovia-Hernandez JG, Rico-Ramirez V, Energy, 31(12), 2176 (2006)
Shah VH, Agrawal R, AIChE J., 56(7), 1759 (2010)
Ashrafian R, Using dividing wall columns (DWC) in LNG production, M.S. Thesis, Norwegian University of Science and Technology Trondheim, Norway (2014).
Amminudin KA, Smith R, Thong DYC, Towler GP, Chem. Eng. Res. Des., 79(7), 701 (2001)
Halvorsen IJ, Skogestad S, Ind. Eng. Chem. Res., 42(3), 596 (2003)
Sanz MT, Murga R, Beltran S, Cabezas JL, Coca J, Ind. Eng. Chem. Res., 43(9), 2049 (2004)
Asthana NS, Kolah AK, Vu DT, Lira CT, Miller DJ, Ind. Eng. Chem. Res., 45(15), 5251 (2006)
