A Novel Adaptive Multivariable Dmc Controller. Application To An Industrial Reactor

[No abstract available]9C633638Santana, P.L.M., Tvrzská de Gouvea, M., Maciel Filho, R., Dechechi, E.C., Domingues, A., (2000) Chemical Engineering Science, , Submitted toCoussemant, F., Jungers, J.C., (1950) Bull. Soc. Chim. Belg., 59, pp. 295-326Patai, S., (1971) Interscience Publishers, pp. 578-581Patai, S., (1971) Interscience Publishers, pp. 641-718Ramachandran, P. A and Cahaudhari, R.V. McGraw-Hill, New York, U.S.A (1983)Dechechi, E.C., (1998) PhD. Thesis, , UNICAMP, BrazilMaiti, S.N., Saraf, D.N., (1995) J. Process Control, 5 (no 5), pp. 315-327Özkan, L., Çamurdan, M.C., (1998) Computers Chem. Engng., 22, pp. S883-S886Seborg, D.E., Edgar, T.F., Shah, S.L., (1986) AIChE Journal, 32 (no 6), pp. 881-913Cutler, C.R., Ramaker, B.L., AIChE (1979) Annual MeetingDechechi, E.C., Luz Jr., L.F.L., Assis, A.J., Wolf Maciel, M.R., Maciel Filho, R., (1998) Computers and Chem. Engng., 22 (Supl), pp. S867-S870Feng, W., Genceli, H., Nikoloau, M., (1996) Computers Chem. Engng., 20, pp. S1011-S1016Lundstron, P., (1995) Computers Chem. Engng., 19 (no 4), pp. 409-421Clarke, D.W., Phil, D., Gawthrop, P.J., (1975) Proceedings of the IEE, 122, pp. 929-934. , No. 9ström, K., Wittenmark, B., (1995), Addison-Wesley Publishing Company In

DYNAMIC MODELLING AND ADVANCED PREDICTIVE CONTROL OF A CONTINUOUS PROCESS OF ENZYME PURIFICATION

A dynamic mathematical model, simulation and computer control of a Continuous Affinity Recycle Extraction (CARE) process, a protein purification technique based on protein adsorption on solid-phase adsorbents is described in this work. This process, consisting of three reactors, is a multivariable process with considerable time delay in the on-line analyses of the controlled variable. An advanced predictive control configuration, specifically the Dynamic Matrix Control (DMC), was applied. The DMC algorithm was applied in process schemes where the aim was to maintain constant the enzyme concentration in the outlet of the third reactor. The performance of the DMC controller was analyzed in the feed-flow disturbances and the results are presented

DYNAMIC MODELLING AND ADVANCED PREDICTIVE CONTROL OF A CONTINUOUS PROCESS OF ENZYME PURIFICATION

A dynamic mathematical model, simulation and computer control of a Continuous Affinity Recycle Extraction (CARE) process, a protein purification technique based on protein adsorption on solid-phase adsorbents is described in this work. This process, consisting of three reactors, is a multivariable process with considerable time delay in the on-line analyses of the controlled variable. An advanced predictive control configuration, specifically the Dynamic Matrix Control (DMC), was applied. The DMC algorithm was applied in process schemes where the aim was to maintain constant the enzyme concentration in the outlet of the third reactor. The performance of the DMC controller was analyzed in the feed-flow disturbances and the results are presented.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

Interactive Supervision Of Batch Distillation With Advanced Control Capabilities

Industrial interest in batch distillation has increased significantly in recent years as more batch processing is being used for low-volume and high-value fine chemicals, but only a few studies of such a process has been reported in the literature concerned with advanced control. This work presents an interactive software that can be used for both simulation and control studies of a batch distillation column. The package uses a rigorous model and a suitable numerical integrator to integrate the stiff DAE system; the phase equilibria can be calculated using several thermodynamic models according to the nature of the system. Three control strategies were investigated to properly regulate the batch distillation process, namely, PID, predictive and adaptive control. Simulation results for closed loop operation are shown as well as a discussion about the recovery of more than one component in the batch column. The software shown here can be easily used to evaluate changes in all the process conditions, as well as in the controller settings, in order to minimise difficulties in the operation of such process. © 1998 Published by Elsevier Science Ltd. All rights reserved.22SUPPL.1S867S870Assis, A.J., Luz Jr., L.F.L., Dechechi, E.C., Maciel, M.R.W., Maciel Filho, R., A software for interactive simulation and predictive control of a batch distillation column (1997) ECCE1 - 1st. European Congress of Chemical Engineering, , Florence, ItalyBoston, J.F., Britt, H.I., Jirapongphan, S., Shah, V.B., An Advanced System for the Simulation of Batch Distillation Operations (1980) Chemical Process Design, pp. 203-237Clarke, D.W., Phil, D., Gawthrop, P.J., Self-Tuning Controller (1975) Proceedings of the IEEE, 122 (9), pp. 929-934Cuille, P.E., Reklaitis, G.V., Dynamic Simulation of Multicomponent Batch Rectification with Chemical Reactions (1986) Comput. Chem. Engng., 10 (4), pp. 389-398Cutler, C.R., Ramaker, B.L., Dynamic Matrix Control - A Computer Control Algorithm (1979) AIChE National Meeting, , Houston, USADechechi, B.C., (1996) Controle DMC de Um Processo de Fermentação Alcoólica Contínua Em Escala Industrial, , M.Eng. Thesis, UNICAMP, BrasilDomenech, S., Enjalbert, M., Modele Mathematique d'une colonne de rectification discontinue - 1 etablissement du modelo (1974) Chemical Engineering Science, 29, pp. 1519-1528Luz Jr., L.F.L., Maciel, M.R.W., Numerical Methods for Simulation of Batch Distillation Columns: Stiff Systems (1995) Brazilian Journal of Chemical Engng, 12 (2), pp. 111-118Seborg, D.E., Edgar, T.F., Mellichamp, D.A., (1989) Process Dynamics and Control, , John Wiley & Sons, USASørensen, E., (1994) Studies on Optimal Operation and Control of Batch Distillation Columns, , Ph.D. Thesis, University of Trondheim, NorwaySastry, V.A., Seborg, D.E., Wood, R.K., Self-Tuning Regulator Applied to a Binary Distillation Column (1977) Automatica, 13, pp. 417-42