Browse > Article

Dynamic Optimization of a Reactive Distillation Column Producing Methyl Acetate  

Kim, Jiyong (Deportment of Chemical and Bimolecular Engineering, Yonsei University)
Kim, Junghwan (Deportment of Chemical and Bimolecular Engineering, Yonsei University)
Moon, Il (Deportment of Chemical and Bimolecular Engineering, Yonsei University)
Publication Information
Korean Chemical Engineering Research / v.46, no.4, 2008 , pp. 739-746 More about this Journal
Abstract
The aim of this study is finding the optimal design parameters and the optimal operation variables of a reactive distillation column. Different from steady state optimization, dynamic optimization makes it possible considering operation ability as well as design problems at process design step. For performing dynamic optimization, dynamic simulation should be done first. If dynamic simulation is already finished, dynamic optimization can be performed with less effort than that of dynamic simulation.Reactive distillation systems involving reaction and separation in a single unit have the potential to reduce capital and operating costs, particularly when reaction have conversion constraint or when azeotropes exist making conventional separation difficult and expensive. This study here present work on the continuous distillation process, the homogeneous catalyzed esterification of methanol and acetic acid, the synthesis of methyl acetate. Based on an equilibrium stage model of a reactive distillation column a dynamic optimization problem was formulated and solved. And the results were verified by performing dynamic simulation and showing the variation of conversion and purity as the variation of the operation variables. As the results of dynamic optimization, this study found optimal feed ratio, reflux ratio and reboiler duty of this system. And as this study applied it to dynamic simulations the dynamic characteristics of a reactive distillation column are showed under optimal operating condition.
Keywords
Dynamic Optimization; Reactive Distillation; Operation Variables; Dynamic Simulation;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Barbosa, D. and Doherty, M. F., "Design and Minimum-reflux Calculations for Double-feed Multicomponent Reactive Distillation Columns," Chem. Eng. Sci., 43(9), 2377-2389(1988)   DOI   ScienceOn
2 Lee, J. W., Steinar, Hauan., Kristian, M. Lien. and Westerberg, A. W., "Difference Points in Extractive and Reactive Cascades. II Generating Design Alternatives by the Lever Rule for Reactive Systems," Chem. Eng. Sci., 55(16), 3161-3174(2000)   DOI   ScienceOn
3 Moon, I. and Lee, I., "Systematic Methods of Chemical Process Design(transtlated in Korean)," A-Jin(1998)
4 gPROMS Introductory User's Guide, PSE Ltd. (2002)
5 Ismail, S. R., Proios, P. and Pistikopoulos, E. N., "Modular Synthesis Framework for Combined Separation/Reaction Systems," AIChE Journal, 47(3), 629-649(2001)   DOI   ScienceOn
6 Tuchlenski, A., Beckmann, A., Reusch, D., Düssel, R., Weidlich, U. and Janowsky, R., "Reactive Distillation Industrial Applications, Process Design & Scale-up," Chem. Eng. Sci., 56(2), 387-394(2001)   DOI   ScienceOn
7 Lee, J. W., Hauan, S. and Westerberg, A. W., "Graphical Methods for Reaction Distribution in a Reactive Distillation Column," AIChE Journal, 46(6), 1218-1233(2000)   DOI   ScienceOn
8 Malone, M. F. and Doherty, M. F., "Conceptual Design of Distillation Systems," McGrawHill(2001)
9 Suwalla, "Design Guidelines for Solid-Catalyzed Reactive Distillation Systems," Ind. Eng. Chem. Res., 39, 3953-3957(2000)   DOI   ScienceOn
10 gPROMS Advanced User's Guide, PSE Ltd. (2002)
11 Cervantes, A. and Biegler, L. T., "Large-Scale DAE Optimization Using a Simultaneous NLP Formulation," AIChE Journal, 44(5), 1038-1050(1998)   DOI   ScienceOn
12 Pekkanen, M., "A Local Optimization Method for the Design of Reactive Distillation," Comput. Chem. Eng., 19, 235-240(1995)   DOI   ScienceOn
13 Malone, M. F., "Reactive Distillation: Commentaries," Ind. Eng. Chem. Res., 39, 3953-3957(2000)   DOI   ScienceOn
14 Fernholz, G., Engell, S., Kreul, L.-U. and Gorak, A., "Optimal Operation of a Semi-batch Reactive Distillation Column," Computers & Chemical Engineering, 24(2-7), 1569-1575(2000)   DOI   ScienceOn
15 Lee, J. W. and Westerberg, A. W., "Graphical Design Applied to MTBE and Methyl Acetate Reactive Distillation Processes," AIChE Journal, 47(6), 1333-1345(2000)   DOI   ScienceOn
16 Malone, M. F. and Doherty, M. F., "Residue Curve Maps for Reactive Distillation Systems with Liquid-phase Splitting," Chem. Eng. Sci., 57(1), 163-178(2002)   DOI   ScienceOn
17 Agreda, V. H., Partin, L. R. and Heise, W. H., "High-purity Methyl Acetate via Reactive Distillation," Chem. Eng. Prog., 86(2), 40-46(1990)
18 Taylor, R. and Krishna, R., "Modelling Reactive Distillation," Chem. Eng. Sci., 55(22), 5183-5229(2000)   DOI   ScienceOn
19 Melles, S., Grievink, J. and Schrans, S. M., "Optimisation of the Conceptual Design of Reactive Distillation Columns," Chem. Eng. Sci., 55(11), 2089-2097(2001)
20 Georgiadis, M. C., Schenk, M., Pistikopoulos, E. N. and Gani, R., "The Interactions of Design Control and Operability in Reactive Distillation Systems," Comput. Chem. Eng., 26(4-5), 735-746(2002)   DOI   ScienceOn