Important mesoscale phenomena in gas phase fluidized bed ethylene polymerization--颗粒学报PARTICUOLOGY

Sun, J., Wang, H., Tian, S., Fan, X., Shi, Q., Liu, Y., . . . Yang, Y. (2020). Important mesoscale phenomena in gas phase fluidized bed ethylene polymerization. Particuology, 48, 116-143. https://doi.org/10.1016/j.partic.2018.12.004

Important mesoscale phenomena in gas phase fluidized bed ethylene polymerization

Jingyuan Sun ^{a c}, Haotong Wang ^c, Sihang Tian ^c, Xiaoqiang Fan ^c, Qiang Shi ^c, Ying Liu ^c, Xiaobo Hu ^c, Yao Yang ^a, Jingdai Wang ^{b c *}, Yongrong Yang ^{b c}

a Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Hangzhou 310027, China
b State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, China
c College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China

10.1016/j.partic.2018.12.004

Volume 48, February 2020, Pages 116-143

Received 1 July 2018, Revised 1 December 2018, Accepted 3 December 2018, Available online 28 May 2019, Version of Record 27 January 2020.

E-mail: wangjd@zju.edu.cn

Highlights

• Mesoscale studies are needed to transition from microscale data to the macroscale.

• The development of ethylene polymerization gas phase processes is described.

• Studies regarding mesoscale phenomena in gas phase processes are reviewed.

• Trends and developments concerning mesoscale phenomena are discussed.

Abstract

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.

Graphical abstract

Keywords

Gas phase fluidized bed process; Mesoscale phenomena; Cloudy zone; Experimental characterization; Mathematical modelling; Control strategy

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