Numerical simulation of micro-mixing in gas-liquid and solid-liquid stirred tanks with the coupled CFD-E-model

doi:10.1016/j.cjche.2020.06.016

	Numerical simulation of micro-mixing in gas-liquid and solid-liquid stirred tanks with the coupled CFD-E-model
	Duan, Xiaoxia 1,3; Feng, Xin 1,3; Peng, Chong 2; Yang, Chao 1,3; Mao, Zaisha 1
刊名	CHINESE JOURNAL OF CHEMICAL ENGINEERING
	2020-09-01
卷号	28 期号:9 页码:2235-2247
关键词	Stirred tank Engulfment model (E-model) Multiphase flow Micro-mixing Computational fluid dynamics (CFD) Simulation
ISSN号	1004-9541
DOI	10.1016/j.cjche.2020.06.016
英文摘要	The coupled CFD-E-model for multiphase micro-mixing was developed, and used to predict the micro-mixing effects on the parallel competing chemical reactions in semi-batch gas-liquid and solid-liquid stirred tanks. Based on the multiphase macro-flow field, the key parameters of the micro-mixing E-model were obtained with solving the Reynolds-averaged transport equations of mixture fraction and its variance at low computational costs. Compared with experimental data, the multiphase numerical method shows the satisfactory predicting ability. For the gas-liquid system, the segregated reaction zone is mainly near the feed point, and shrinks to the exit of feed-pipe when the feed position is closer to the impeller. Besides, surface feed requires more time to completely exhaust the added FI' solution than that of impeller region feed at the same operating condition. For the solid-liquid system, when the solid suspension cloud is formed at high solid holdups, the flow velocity in the clear liquid layer above the cloud is notably reduced and the reactions proceed slowly in this almost stagnant zone. Therefore, the segregation index in this case is larger than that in the dilute solid-liquid system. (C) 2020 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
资助项目	National Key Research and Development Program[2016YFB0301702] ; National Natural Science Foundation of China[21808221] ; National Natural Science Foundation of China[21776282] ; National Natural Science Foundation of China[21938009] ; Major Research Plan of NSFC[91934301] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-JSC030] ; Key Research Program of Nanjing IPE Institute of Green Manufacturing Industry[E0010719] ; Youth Innovation Promotion Association CAS
WOS关键词	PARALLEL CHEMICAL-REACTIONS ; FLUID-DYNAMICS SIMULATION ; CRITICAL IMPELLER SPEED ; MASS-TRANSFER ; RUSHTON TURBINE ; TURBULENT-FLOW ; BUBBLE-SIZE ; PREDICTION ; SUSPENSION ; VESSEL
WOS研究方向	Engineering
语种	英语
出版者	CHEMICAL INDUSTRY PRESS CO LTD
WOS记录号	WOS:000584338800002
资助机构	National Key Research and Development Program ; National Natural Science Foundation of China ; Major Research Plan of NSFC ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of Nanjing IPE Institute of Green Manufacturing Industry ; Youth Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/42694]
专题	中国科学院过程工程研究所
通讯作者	Feng, Xin
作者单位	1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.SINOPEC Dalian Res Inst Petr & Petrochem, Dalian 116045, Peoples R China 3.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Duan, Xiaoxia,Feng, Xin,Peng, Chong,et al. Numerical simulation of micro-mixing in gas-liquid and solid-liquid stirred tanks with the coupled CFD-E-model[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2020,28(9):2235-2247.
APA	Duan, Xiaoxia,Feng, Xin,Peng, Chong,Yang, Chao,&Mao, Zaisha.(2020).Numerical simulation of micro-mixing in gas-liquid and solid-liquid stirred tanks with the coupled CFD-E-model.CHINESE JOURNAL OF CHEMICAL ENGINEERING,28(9),2235-2247.
MLA	Duan, Xiaoxia,et al."Numerical simulation of micro-mixing in gas-liquid and solid-liquid stirred tanks with the coupled CFD-E-model".CHINESE JOURNAL OF CHEMICAL ENGINEERING 28.9(2020):2235-2247.