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CFD Analysis of Gas–Particle Heat Transfer in Gas‐Phase Olefin Polymerizations
Author(s) -
Guidolini Icaro Pianca,
Fontes Carlos Eduardo,
Lage Paulo Laranjeira da Cunha,
Pinto José Carlos
Publication year - 2016
Publication title -
macromolecular reaction engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 32
eISSN - 1862-8338
pISSN - 1862-832X
DOI - 10.1002/mren201500062
Subject(s) - gas phase , heat transfer , materials science , computational fluid dynamics , thermodynamics , particle (ecology) , mechanics , chemical engineering , chemistry , physics , engineering , geology , oceanography
Computational fluid dynamics (CFD) is used to study the gas–particle heat transfer in gas‐phase olefin polymerizations. Particularly, the effects of particle rotation on the gas–particle heat transfer coefficient and internal particle temperatures are evaluated, showing that particle rotation can exert a significant impact on observed temperature profiles, so that this effect should not be neglected during detailed CFD process simulations. As a consequence, particle rotation can lead to particle cooling and development of spherical gradient symmetry, validating the use of simpler modeling schemes that are based on reaction–diffusion in symmetrical spherical geometry.