The influence of catalyst flow rate and superficial gas velocity on the modified two-phase model for propylene polymerization in a gas-phase fluidized bed reactor
Document Type
Article
Publication Date
8-1-2021
Abstract
Olefin polymerization, especially of propylene in gas-phase fluidized bed reactors, is increasingly prevalent because of its ability to handle the continuous process, among other advantages. The challenge for modelling this process is solving the high nonlinearity phenomena in such a system. This research studies the influence of catalyst flow rate and superficial gas velocity on the modified two-phase model. The catalyst flow rates were set at 1 x 10(-4), 2 x 10(-4), and 3 x 10(-4) kg/s, while the superficial flow rates were set at 0.35, 0.5, and 0.65 m/s. Production rate, reactor temperature, and heat-loss flow rate were found to be proportional to catalyst flow rate and inversely proportional to superficial gas velocity. Heat loss through the fluidized bed wall had an influence only on the reactor temperature. Finally, predicted reactor temperatures corresponded closely to the pilot plant data, with deviations smaller than 0.5%.
Keywords
Fluidized bed reactor, Gas, Phase, Heat loss, Propylene, Two, Phase model
Divisions
sch_che
Funders
Ministry of Education, Malaysia,Universiti Malaysia Sarawak (UNIMAS)
Publication Title
Canadian Journal of Chemical Engineering
Volume
99
Issue
8
Publisher
Wiley
Publisher Location
111 RIVER ST, HOBOKEN 07030-5774, NJ USA