The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering
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May 13-17, 2007
A population balance model is developed to investigate the particle-size distribution developments in a gas-phase fluidized-bed ethylene polymerization reactor. The model considers the combined effects of particle growth and elutriation for size distributed prepolymer feed. In the proposed model, the bed is divided into several sections consisting of bubble and emulsion phases. The population balance differential equations derived for each section were simultaneously solved to determine the density function of the size distribution of the polymer particles in each section. The model is able to predict the axial profiles of particle size distribution. It was also shown that the mean size of the particles is larger at the bottom of the bed and becomes smaller when moving toward top of the reactor.
Omid Ashrafi, Navid Mostoufi, and Rahmat Sotudeh-Gharebagh, "Particle Size Distribution in Gas-Phase Polyethylene Reactors" in "The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering", Franco Berruti, The University of Western Ontario, London, Canada; Xiaotao (Tony) Bi, The University of British Columbia, Vancouver, Canada; Todd Pugsley, University of Saskatchewan, Saskatoon, Saskatchewan, Canada Eds, ECI Symposium Series, (2007). https://dc.engconfintl.org/fluidization_xii/124