Dynamic Simulation of Divided Wall Columns and Investigating Their Control Strategies

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Ghoreishi Mohammadi, Aref | 2019

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 52467 (06)
University: Sharif University of Technology
Department: Chemical and Petroleum Engineering
Advisor(s): Shahrokhi, Mohammad; Vafa, Ehsan
Abstract:
Because of lower energy consumption and lower capital cost, divided wall columns attracted wide attention. The main challenge of these units is their controllability. In this thesis dynamic simulation and control of a divided wall column is investigated and an adaptive model predictive controller has been used for control purpose. For dynamic simulation the Aspen Dynamics software and for applying control strategy the MATLAB software have been utilized. The model used for model predictive controller has been obtained by using open loop responses of the system. The main advantage of presented work over the existing ones is using the input-output transfer function of the system model instead of using the state space one. In this approach, there is no need to measure or estimate all sate variables of the system and only input-output data are required. The effectiveness of the applied control strategy has been demonstrated via simulation study
Keywords:
Transfer Function ; Online Estimation ; Parameter Estimation ; Adaptive Predictive Control ; Online Parameters Estimation ; Divided Wall Columns

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