02019nas a2200217   4500008004100000022001400041245009200055210006900147260006800216300001400284490000800298520122500306653001301531653001601544653003301560100002401593700002301617700001801640700002201658856012101680       2008                        eng d  a0021-899500aModeling of a fluidized bed propylene polymerization reactor operated in condensed mode0 aModeling of a fluidized bed propylene polymerization reactor ope  a111 RIVER ST, HOBOKEN, NJ 07030 USAbJOHN WILEY & SONS INCcMAY  a2067-20760 v1083 a<p>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 Wiley Periodicals, Inc. J Appl Polym Sci 108: 2067-2076, 2008.</p>10aModeling10aPolyolefins10aZiegler-Natta polymerization1 aUtikar, Ranjeet, P.1 aHarshe, Yogesh, M.1 aMehra, Anurag1 aRanade, Vivek, V.  uhttps://library.ncl.res.in/content/modeling-fluidized-bed-propylene-polymerization-reactor-operated-condensed-mode-0