TITLE

MODELING INTRAPARTICLE TRANSPORTS DURING PROPYLENE POLYMERIZATIONS USING SUPPORTED METALLOCENE AND DUAL FUNCTION METALLOCENE AS CATALYSTS: SINGLE PARTICLE MODEL

AUTHOR(S)
HUA-RONG LI; LIMING CHE; ZHENG-HONG LUO
PUB. DATE
April 2014
SOURCE
Chemical Industry & Chemical Engineering Quarterly;2014, Vol. 20 Issue 2, p249
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Two improved multigrain models (MGMs) for preparing homopolypropylene and long chain branched polypropylene via propylene polymerization using silica-supported metallocene or dual function metallocene as catalysts are presented in this paper. The presented models are used to predict the intraparticle flow fields involved in the polymerizations. The simulation results show that the flow field distributions involved are basically identical. The results also show that both polymerization processes have an initiation stage and the controlling step is reaction-diffusion-reaction with the polymerization proceeding. Furthermore, the simulation results show that the intraparticle mass transfer resistance has significant effect on the polymerization, but the heat transfer resistance can be ignored.
ACCESSION #
97003405

 

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