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- Title
Dynamic control of heat pump assisted extractive distillation process for separation of ethyl acetate/isopropanol/water mixture.
- Authors
Shan, Baoming; Niu, Chengqun; Meng, Dapeng; Zhao, Qing; Huo, Bingjie; Ma, Yixin; Wang, Yinglong; Zhang, Fangkun; Zhu, Zhaoyou
- Abstract
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).
- Subjects
SOCIETY of Chemical Industry (Great Britain); EXTRACTIVE distillation; HEAT pumps; ETHYL acetate; HEATING control; ISOPROPYL alcohol; SEWAGE; TEMPERATURE control
- Publication
Journal of Chemical Technology & Biotechnology, 2021, Vol 96, Issue 8, p2368
- ISSN
0268-2575
- Publication type
Article
- DOI
10.1002/jctb.6764