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Dynamic control of heat pump assisted extractive distillation process for separation of ethyl acetate/isopropanol/water mixture
Author(s) -
Shan Baoming,
Niu Chengqun,
Meng Dapeng,
Zhao Qing,
Huo Bingjie,
Ma Yixin,
Wang Yinglong,
Zhang Fangkun,
Zhu Zhaoyou
Publication year - 2021
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.6764
Subject(s) - extractive distillation , process engineering , controllability , process (computing) , heat pump , controller (irrigation) , distillation , ethyl acetate , process control , temperature control , separation process , extraction (chemistry) , chemistry , engineering , chromatography , control engineering , computer science , mathematics , mechanical engineering , heat exchanger , agronomy , biology , operating system
BACKGROUND Controlling the behavior of processes for the recovery of ethyl acetate and isopropanol from industrial wastewater is a hot topic. In this work, dynamic control structures of the extractive distillation process and heat pump combined with feeding preheating extractive distillation process are researched. The control performance of the proposed control structures is tested by adding feed flow and composition disturbance. In these two processes, two‐point temperature control structure is first used. RESULTS The results show that this structure can maintain product purity within a reasonable range under disturbance. Furthermore, the composition controller is used to improve control performance. CONCLUSION The improved structure can effectively meet the requirements of product purity. The heat pump combined with feeding preheating extractive distillation process can use the same control structure as the extraction process and show good controllability. This study has a certain guiding value for the research of chemical dynamic control. © 2021 Society of Chemical Industry (SCI).