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Received January 10, 2006
Accepted March 1, 2007
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Nonlinear model based control of two-product reactive distillation column
Department of Chemical & Biological Engineering, Chungnam National University, 220, Gung-dong, Yousung, Daejeon 305-764, Korea 1Department of Chemical & Biological Engineering, University of Colorado, Boulder, CO 80309-0424, USA
mwhan@cnu.ac.kr
Korean Journal of Chemical Engineering, July 2006, 23(4), 540-546(7), 10.1007/BF02706791
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Abstract
Nonlinear feedback control scheme for reactive distillation column has been proposed. The proposed control scheme is derived in the framework of Nonlinear Internal Model Control. The product compositions and liquid and vapor flow rates in sections of the reactive distillation column are estimated from selected tray temperature measurements by an observer. The control scheme is applied to an example reactive distillation column in which two products are produced in a single column and the reversible reaction A+B=C+D occurs. The relative volatilities are favorable for reactive distillation so that the reactants are intermediate boilers between the light product C and the heavy product D. Ideal physical properties, kinetics, and vapor-liquid equilibrium are also assumed. It is shown that the proposed control scheme keeps tight product composition control.
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Barlett DA, Wahnschafft OM, Dynamic simulation and control strategy evaluation for MTBE reactive distillation, Paper presented at FOCAP (1999)
Barolo M, Berto F, Ind. Eng. Chem. Res., 37(12), 4689 (1998)
Bock H, Wozny G, Gutche B, Chem. Eng. Prog., 36, 101 (1997)
Guttinger TE, Morari M, Ind. Eng. Chem. Res., 38(4), 1633 (1999)
Kumar A, Daoutidis P, AIChE J., 45(1), 51 (1999)
Lim C, Han M, Journal of Control, Automation and Systems Engineering, 7, 263 (2001)
Monroy-Loperena R, Alvarez-Ramirez J, Ind. Eng. Chem. Res., 39(2), 378 (2000)
Quintero-Marmol E, Luyben W, Chem. Eng. Sci., 47(4), 887 (1992)
Sneesby MG, Tade MO, Datta R, Smith TN, AIChE J., 44(2), 388 (1998)
