Providing a Practical Method for Automatic Start-Up of Reactive Distillation Column Using Decentralized Control of CVs Trajectory Based on Residue Curve Maps (RCM) Analysis: The Methyl Acetate Case

Vahidi Ferdowsi, Maissam; Fanaei, Mohammad Ali; Karimpour, Ali

doi:10.30492/ijcce.2023.1999003.5940

Providing a Practical Method for Automatic Start-Up of Reactive Distillation Column Using Decentralized Control of CVs Trajectory Based on Residue Curve Maps (RCM) Analysis: The Methyl Acetate Case

Document Type : Research Article

Authors

¹ Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, I.R. IRAN

² Department of Electrical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, I.R. IRAN

10.30492/ijcce.2023.1999003.5940

Abstract

The primary purpose of this feasibility study is to use an appropriate decentralized control configuration (based on PID controllers) to automatically navigate the startup trajectory
of a reactive distillation column in the presence of azeotropic points. The purpose of this article is to show how a conceptual understanding of the Reactive Residual Curve Map (R-RCM) may be utilized to define a trajectory for directing the control variables during startup. The results demonstrate that steering the startup operation using a two-point temperature control structure with the feed rate of the reactants specified as the control manipulator is more efficient than other structures. Examining the various startup strategies shows several steady-state conditions at the end of the start-up time. This is because only a unique approach will achieve the desired steady-state condition. According to the findings, the controller tuning parameters play a significant impact in steering the startup trajectory. For this case study, the gain and integral time values for both controllers should be approximately one-third and three times, respectively, of the values found under normal operating conditions.

Highlights

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