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Modeling of a fluidized bed propylene polymerization reactor operated in condensed mode

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Title Modeling of a fluidized bed propylene polymerization reactor operated in condensed mode
 
Creator UTIKAR, RP
HARSHE, YM
MEHRA, A
RANADE, VV
 
Subject particle-size distribution
olefin polymerization
polypropylene
vaporization
performance
evaporation
droplets
cracking
modeling
polyolefins
ziegler-natta polymerization
 
Description The gas-phase polymerization of propylene is one of the most widely accepted and commercially used processes for the manufacture of polypropylene (PP). Because of the highly exothermic nature of polymerization reactions, temperature runaway and subsequent polymer melting and agglomeration may occur, and the reactor has to be operated in a small operating window for safety. The addition of liquid monomer for heat removal (condensed mode) broadens the operating window and can substantially increase (by 50-100%) the capacity of given reactor hardware. This article describes the extension of a comprehensive mathematical model for the simulation of fluidized bed PP reactors to include the condensed mode of operations. The model is used to determine the influence of the operating parameters on the polymer properties and particle size distribution. The model is also used to determine the effects of two active sites and the reaction kinetics on macroscopic variables. The developed framework is useful for simulating multimonomer, multisite Ziegler-Natta-type olefin fluidized bed polymerization reactors operated under condensed mode. (C) 2008 . J Appl Polym Sci 108: 2067-2076, 2008.
 
Publisher JOHN WILEY & SONS INC
 
Date 2011-08-16T09:55:38Z
2011-12-26T12:54:53Z
2011-12-27T05:43:13Z
2011-08-16T09:55:38Z
2011-12-26T12:54:53Z
2011-12-27T05:43:13Z
2008
 
Type Article
 
Identifier JOURNAL OF APPLIED POLYMER SCIENCE, 108(4), 2067-2076
0021-8995
http://dx.doi.org/10.1002/app.27748
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9463
http://hdl.handle.net/10054/9463
 
Language en