Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/68291
Type: Artigo de periódico
Title: Heterogeneous modeling of fluidized bed polymerization reactors. Influence of mass diffusion into the polymer particle
Author: Fernandes, FAN
Lona, LMF
Abstract: Intraparticle mass transfer can play an important role in catalyzed polymerizations. This work discusses the importance of taking this influence into account or not when modeling a fluidized bed reactor. An analysis was made of this influence on the reactor phenomena, on polymer productivity and on the polymer's physicochemical properties (polymer quality). Two basic cases were simulated: low and high residence time of the polymer particle inside the reactor (low: 10 min; high: 1 h). The results indicate the need to model the reactor taking into account the intraparticle mass transfer and the concentration profile inside the particle when the fluidized bed operates under conditions of low residence time. For high residence times (above 20 min), the overall simulation results change only slightly when intraparticle mass transfer is not considered. (C) 2002 Elsevier Science Ltd. All rights reserved.
Subject: polymer
polymerization reactor
polyethylene
modeling
simulation
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/S0098-1354(02)00010-8
Date Issue: 2002
Appears in Collections:Unicamp - Artigos e Outros Documentos

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