Abstract—Although The Dividing Wall Column (TDWC) with a top partition is an effective alternative for the separation of ternary mixtures dominated by the lightest component, it can be further intensified by introducing the Internal Heat Integration-The Dividing Wall Column (IHI-TDWC). However, strong internal mass and energy integration complicates the process dynamics and influences the system controllability. In the current work, a kind of decentralized temperature control scheme involving four temperature control loops is developed. The separation of the ternary mixture with methanol, ethanol, and n-propanol is chosen as an illustrative example to evaluate the controllability of the IHI-TDWC through open-loop and closed-loop dynamic process simulation. The results show that the IHI-TDWC keeps good rejection of the throughput and feed composition disturbances.
Index Terms—Dividing wall column, internal heat integration, process control, temperature control
The authors are with the College of Information Science and Technology, Beijing University of Chemical Technology, Beijing, China. E-mail: chenhs@mail.buct.edu.cn (C.H.)
*Correspondence: 2020200728@buct.edu.cn (L.J.)
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Cite: Liu Jingjing and Chen Haisheng, "Dynamic Control Analysis of Internally Heat Integrated-Top Dividing Wall Column," International Journal of Chemical Engineering and Applications vol. 14, no. 2, pp. 24-27, 2023.
