Modified approach to distillation column control

Main Article Content

Saša Lj. Prodanović
Novak N. Nedić
Vojislav Ž. Filipović
Ljubiša M. Dubonjić

Abstract

This paper contains methodology research for forming the control algorithm for a distil­lation column, modeled as TITO (two-input two-output) process. Its modified form was obtained by connecting the two parts, and this combination hasn't been applied for such a industrial plant, until now. These parts include: a simplified decoupler which was first designed and decentralized PID controller obtained using D-decomposition method for such decoupled process. The decoupler was designed in order to make process become diagonal, and parameters of PID controllers are defined for the two SISO (single-input single-output) processes starting from relation between IE (integral error) criterion and integrator gain, taking into account desired response characteristics deriving from tech­nological requirements of controlled plant. Their connecting provides centralized control. Analysis of the processes responses, obtained by the proposed algorithm and their com­par­ison with the results from the literature, were performed after the completion of the simulations. The proposed approach to the centralized controller design, beside its sim­plicity of usage and flexibility in achieving diversity of process dynamic behavior, gives better response characteristics, in comparison with existing control algorithms for distil­lation column in the literature.

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How to Cite

[1]
S. L. Prodanović, N. N. Nedić, V. Ž. Filipović, and L. M. Dubonjić, “Modified approach to distillation column control”, Hem Ind, vol. 71, no. 3, pp. 183–193, Jul. 2017, doi: 10.2298/HEMIND160326028P.

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