Abstract
In this paper, a decentralized Proportional-Integral-Derivative control with an inverted decoupling structure is designed and implemented in an industrial diesel hydrotreating unit. The hydrotreating unit consists of two reactors with two catalytic beds each. The temperature control of each catalytic bed is disturbed by fluctuations in the preceding catalytic beds temperature, in addition to other inherent process disturbances. Neglecting this interaction in the controller design degrades the desired performance. Inverted decoupler implementation details in the digital control system are presented. Moreover, actual results on comparing the performance of temperature control loops with and without decoupler are discussed.
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Acknowledgements
This work is supported by Petrobras, COPELE (Coord. de Pós-graduação em Eng. Elétrica da UFCG) and CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico).
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Aguiar, A.P.V.d.A., Longhi, L.G.S., Acioli Júnior, G. et al. Inverted Decoupling PID Control Applied to the Reactors of a Diesel Hydrotreating Unit. J Control Autom Electr Syst 34, 315–323 (2023). https://doi.org/10.1007/s40313-022-00977-0
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DOI: https://doi.org/10.1007/s40313-022-00977-0