Computational fluid dynamics-discrete element method simulation of stirred tank reactor for graphene production  

作　　者：Shuaishuai Zhou Jing Li Kaixiang Pang Chunxi Lu Feng Zhu Congzhen Qiao Yajie Tian Jingwei Zhang 

机构地区：[1]College of Chemistry and Molecular Sciences,Henan University,Kaifeng 475004,China [2]National&Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials,Henan University,Kaifeng 475004,China [3]Department of State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China [4]Zhejiang Luoxing Chemical Co.,Ltd,Jiaxing 314001,China

出　　处：《Chinese Journal of Chemical Engineering》2023年第12期196-207,共12页中国化学工程学报（英文版）

基　　金：National Natural Science Foundation of China(U2004176,22008055);Technology Research Project of Henan Province(232102240034)are gratefully acknowledged.

摘　　要：Liquid phase exfoliation(LPE)process for graphene production is usually carried out in stirred tank reactor and the interactions between the solvent and the graphite particles are important as to improve the production efficiency.In this paper,these interactions were revealed by computational fluid dynamics–discrete element method(CFD-DEM)method.Based on simulation results,both liquid phase flow hydrodynamics and particle motion behavior have been analyzed,which gave the general information of the multiphase flow behavior inside the stirred tank reactor as to graphene production.By calculating the threshold at the beginning of graphite exfoliation process,the shear force from the slip velocity was determined as the active force.These results can support the optimization of the graphene production process.

关 键 词：Computational fluid dynamics Discrete element method Stirred tank LPE process Liquid-particle interactions 

分 类 号：TQ127.11[化学工程—无机化工] TQ021.1