Important mesoscale phenomena in gas phase fluidized bed ethylene polymerization  

作　　者：Jingyuan Sun Haotong Wang Sihang Tian Xiaoqiang Fan Qiang Shi Ying Liu Xiaobo Hu Yao Yang Jingdai Wang Yongrong Yang 

机构地区：[1]Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology,Hangzhou 310027,China [2]College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China [3]State Key Laboratory of Chemical Engineering,Zhejiang University,Hangzhou 310027,China

出　　处：《Particuology》2020年第1期116-143,共28页颗粒学报（英文版）

基　　金：This work was supported by the National Natural Science Foun-dation of China(Grant No.91434205);the National Science Fund for Distinguished Young(Grant No.21525627);the Natural Science Foundation of Zhejiang Province for Young(Grant No.LQ18B060001).

摘　　要：Gas phase fluidized bed processes have been widely applied to polyethylene production.In these processes,the flow,mass transfer,and reaction rate on the microscale and macroscale are strongly coupled because of the multiphase and multiscale nature of the fluidization system.Understanding mesoscale phenomena is therefore essential to the quantitative translation of the knowledge obtained from the microscale to the macroscale.This paper reviews the development of ethylene polymerization gas phase processes while focussing on studies regarding mesoscale phenomena.These include experimental characterizations,mathematical modelling and control strategies.Trends and future developments in this field are also discussed.

关 键 词：Gas phase fluidized bed process Mesoscale phenomena Cloudy zone Experimental characterization Mathematical modelling Control strategy 

分 类 号：TQ021[化学工程]