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Received January 24, 2005
Accepted April 6, 2005
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Use of Two Feeds in Simulated Moving Beds for Binary Separations
School of Chemical Engineering, Purdue University, West Lafayette, IN47907-2100, USA
kim92@ecn.purdue.edu
Korean Journal of Chemical Engineering, July 2005, 22(4), 619-627(9), 10.1007/BF02706654
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Abstract
Simulated moving bed (SMB) and Analog systems with two-feeds are proposed to increase the separation performance. Operation with both total and partial feeds is studied. When the two feeds have different compositions, the proposed SMB system often showed better performance than conventional SMB and Varicol systems and the Analog system with two-feeds typically achieved higher purities compared to the Analog for conventional SMB and Varicol when the number of tanks was increased. Partial-feed operation strategy for SMB and Analog systems with two-feeds often showed significant performance improvement compared to conventional SMB plus partial feed and Varicol plus partial feed. When the two feeds are identical, partial feed operation of the two-feed SMB becomes identical to partial feed operation of Varicol.
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References
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Wankat PC, Rate-Controlled Separations, Kluwer, Amsterdam (1990)
Wankat PC, Kessler DP, Ind. Eng. Chem. Res., 32, 3061 (1993)
Zang Y, Wankat PC, Ind. Eng. Chem. Res., 41, 2054 (2002)
Zhang Z, Mazzotti M, Morbidelli M, J. Chromatogr. A, 1006, 87 (2003)
Zhang Z, Mazzotti M, Morbidelli M, Korean J. Chem. Eng., 21, 454 (2004)
Abunasser N, Wankat PC, Ind. Eng. Chem. Res., 43(17), 5291 (2004)
Broughton DB, Gerhold CG, Continuous Sorption Process Employing Fixed Bed of Sorbent and Moving Inlets and Outlets, U. S. Patent 2,985,589 (1961)
Kim JK, Wankat PC, Ind. Eng. Chem. Res., 43(4), 1071 (2004)
Kim JK, Zang YF, Wankat PC, Ind. Eng. Chem. Res., 42(20), 4849 (2003)
Kim YD, Lee JK, Cho YS, Korean J. Chem. Eng., 18(6), 971 (2001)
Ludemann-Hombourger O, Pigorini G, Nicoud RM, Ross DS, Terfloth G, J. Chromatogr. A, 947, 59 (2002)
McCabe WL, Thiele EW, Ind. Eng. Chem. Fundam., 17, 605 (1925)
Migliorini C, Mazzotti M, Morbidelli M, J. Chromatogr. A, 827, 161 (1998)
Mota JPB, Araujo JMM, AIChE J., "Single-column Simulated-Moving-Bed Process with Recycle Lag", AIChE J. (in press).
Pais LS, Loureiro JM, Rodrigues AE, AIChE J., 44(3), 561 (1998)
Pais LS, Rodrigues AE, J. Chromatogr. A, 1006, 33 (2003)
Wankat PC, Rate-Controlled Separations, Kluwer, Amsterdam (1990)
Wankat PC, Kessler DP, Ind. Eng. Chem. Res., 32, 3061 (1993)
Zang Y, Wankat PC, Ind. Eng. Chem. Res., 41, 2054 (2002)
Zhang Z, Mazzotti M, Morbidelli M, J. Chromatogr. A, 1006, 87 (2003)
Zhang Z, Mazzotti M, Morbidelli M, Korean J. Chem. Eng., 21, 454 (2004)
