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Design optimization and control of dividing wall column for purification of trichlorosilane
Zhang, Haohao1,2; Lu, Ping1; Ding, Zhe1,2; Li, Yingbo1; Li, Hai1; Hua, Chao1; Wu, Zhe3
2022-08-10
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume257Pages:23
AbstractPolysilicon quality and energy consumption are directly affected by the purification process of trichlorosilane. In this work, the dividing wall column (DWC) as a promising energy-saving technology is utilized for trichlorosilane purification, with the design optimization carried out using steady-state simulation. Compared with conventional distillation process, DWC can reduce total annual cost (TAC), CO2 emissions and exergy loss (El) by 35.81%, 53.56% and 54.10% on average, respectively. Established on the characteristics of superfractionator, four control structures are proposed in this work, two of which are multi-loop proportional-integral (PI) control schemes including condenser duty (C), distillate flow rate (D), bottom flow rate (B)/reflux flow rate (R), side flow rate (S), reboiler duty (V) control structure and optimal energy control structure. The other two are model predictive control (MPC) schemes including standard MPC structure and MPC-PI hybrid structure. The weights of MPC controller are optimized using the simulated annealing (SA) algorithm. Dynamic simulation results demonstrate that MPC schemes achieve improved closed-loop performance in terms of minor overshoot, shorter transition time and reduced oscillation than PI control schemes. The integral absolute error (IAE) is introduced to further quantitatively evaluate MPC schemes. The simulation results demonstrate that the standard MPC structure achieves the best control performance and the MPC-PI hybrid structure enhances process safety while maintaining the desired control performance.(c) 2022 Elsevier Ltd. All rights reserved.
KeywordDividing wall column MPC PI Simulated annealing algorithm Dynamic optimization Control and safety performance
DOI10.1016/j.ces.2022.117716
Language英语
WOS KeywordMODEL-PREDICTIVE CONTROL ; PROPORTIONAL-INTEGRAL CONTROL ; EXTRACTIVE DISTILLATION ; OPERATIONAL SAFETY ; HIGH-PURITY ; SEPARATION
Funding ProjectNational Key Research and Development Program of China[2019YFC1907600] ; Science and Technology Service Network Program[KFJ-STS-QYZD-2021-14-002] ; Key Research and Development Program of Ningxia[2020BDE02025]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Key Research and Development Program of China ; Science and Technology Service Network Program ; Key Research and Development Program of Ningxia
WOS IDWOS:000807739200002
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/53845
Collection中国科学院过程工程研究所
Corresponding AuthorHua, Chao; Wu, Zhe
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 117585, Singapore
Recommended Citation
GB/T 7714
Zhang, Haohao,Lu, Ping,Ding, Zhe,et al. Design optimization and control of dividing wall column for purification of trichlorosilane[J]. CHEMICAL ENGINEERING SCIENCE,2022,257:23.
APA Zhang, Haohao.,Lu, Ping.,Ding, Zhe.,Li, Yingbo.,Li, Hai.,...&Wu, Zhe.(2022).Design optimization and control of dividing wall column for purification of trichlorosilane.CHEMICAL ENGINEERING SCIENCE,257,23.
MLA Zhang, Haohao,et al."Design optimization and control of dividing wall column for purification of trichlorosilane".CHEMICAL ENGINEERING SCIENCE 257(2022):23.
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