文献类型：期刊文献

英文题名：Computational fluid dynamics simulation of gas-liquid-solid polyethylene fluidized bed reactors incorporating with a dynamic polymerization kinetic model

作者：Pan Hui[1,2];Liu Yuan-Xing[2];Luo Zheng-Hong[2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai, Peoples R China;[2]Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Dept Chem Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

年份：2019

卷号：14

期号：1

外文期刊名：ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20184305971462);WOS:【SCI-EXPANDED(收录号:WOS:000458368000003)】；

基金：National Natural Science Foundation of China, Grant/Award Numbers: 21625603 and 21776173; National Ministry of Science and Technology of China, Grant/Award Number: 2017YFB0602401

语种：英文

外文关键词：CFD; FBR; polyethylene; polymerization kinetics model; scale-up

摘要：A comprehensive polymerization kinetics model that includes site formation, chain initiation, chain propagation, chain transfer and chain deactivation elementary reactions was incorporated into the three-fluid computational fluid dynamics (CFD) model to describe the polymer properties in the gas-liquid-solid three-phase polyethylene fluidized bed reactor. The effect of operating conditions on polyethylene properties was firstly discussed. Furthermore, due to the importance and complexity of scaling up three-phase reactors, the incorporated CFD model was then employed to investigate the scale-up influence, which indicates that the difference of flow hydrodynamics in the reactor due to scale-up effect will result in the difference of polymerization reaction rate.