Estimator-based control of reactive distillation system: Application of an extended Kalman filtering

This paper demonstrates that a state estimator can be successfully designed and implemented in a feedback control system of reactive distillation. The work of the state estimator is to provide the state compositions that are required to be used in the controller for necessary action. The control performance of a system that relies on the state estimator is examined and compared to a system that takes direct measurement from the process assuming the availability of a perfect online analyzer. It is found that the estimator-based system is robust against a moderate measurement errors and erroneous initial conditions. If the state estimator is designed from a highly erroneous process model, noisy measurements and approximate initial conditions, the use of estimator together with an online analyzer (for easily measured states) is recommended to achieve an effective control of a reactive distillation system.

[1]  Moses O. Tadé,et al.  Model gain scheduling control of an ethyl tert-butyl ether reactive distillation column , 2003 .

[2]  H. W. Sorenson,et al.  Kalman filtering : theory and application , 1985 .

[3]  Muhammad A. Al-Arfaj,et al.  Control Study of Ethyl tert-Butyl Ether Reactive Distillation , 2002 .

[4]  Ruokang Li,et al.  Fault detection and diagnosis in a closed-loop nonlinear distillation process: application of extended Kalman filters , 1991 .

[5]  Massimo Morbidelli,et al.  A composition estimator for multicomponent distillation columns — development and experimental test on ternary mixtures , 1998 .

[6]  Massimo Morbidelli,et al.  Development of a composition estimator for binary distillation columns. Application to a pilot plant , 1995 .

[7]  Muhammad A. Al-Arfaj,et al.  Plantwide control for TAME production using reactive distillation , 2004 .

[8]  Muhammad A. Al-Arfaj,et al.  Comparison of Alternative Control Structures for an Ideal Two-Product Reactive Distillation Column , 2000 .

[9]  William L. Luyben,et al.  Effect of the Chemical Equilibrium Constant on the Design of Reactive Distillation Columns , 2004 .

[10]  R. M. Oisiovici,et al.  State estimation of batch distillation columns using an extended Kalman filter , 2000 .

[11]  P. Daoutidis,et al.  Dynamics and control of an ethyl acetate reactive distillation column , 2001 .

[12]  Muhammad A. Al-Arfaj,et al.  Comparative control study of ideal and methyl acetate reactive distillation , 2002 .

[13]  Achim Kienle,et al.  Nonlinear control of a reactive distillation column , 2003 .

[14]  †. San-Jang Wang,et al.  Control of a Reactive Distillation Column in the Kinetic Regime for the Synthesis of n-Butyl Acetate , 2003 .

[15]  William L. Luyben,et al.  Effect of Relative Volatility on the Quantitative Comparison of Reactive Distillation and Conventional Multi-unit Systems , 2004 .

[16]  William L. Luyben,et al.  Economic and Dynamic Impact of the Use of Excess Reactant in Reactive Distillation Systems , 2000 .

[17]  Jose Alvarez-Ramirez,et al.  Output-feedback control of reactive batch distillation columns , 2000 .

[18]  Muhammad A. Al-Arfaj,et al.  Control of ethylene glycol reactive distillation column , 2002 .