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Computational fluid dynamics simulation of gas–liquid–solid polyethylene fluidized bed reactors incorporating with a dynamic polymerization kinetic model
Author(s) -
Hui Pan,
YuanXing Liu,
ZhengHong Luo
Publication year - 2018
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.2265
Subject(s) - computational fluid dynamics , polyethylene , fluidized bed , polymerization , materials science , scaling , polymer , thermodynamics , fluid dynamics , mechanics , chemical engineering , composite material , engineering , physics , geometry , mathematics
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.