Kinetic modeling of propylene homopolymerization in a gas-phase fluidized-bed reactor

Ahmad Shamiri, Mohamed Azlan Hussain, Farouq Sabri Mjalli, Navid Mostoufi

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

A comprehensive mechanistic model describing gas-phase propylene polymerization is developed. The kinetics of polymerization is based on a multiple active site for Ziegler-Natta catalyst. The model considers the polymerization reaction to take place in both bubble and emulsion phases. The developed model was used to predict polymer production rate, number and weight average molecular weights, polydispersity index (PDI) and melt flow index (MFI). Results showed that by increasing the superficial gas velocity from 0.1 to 0.7 m/s the proportion of the polymer produced in the bubble phase increases from 7.92% to 13.14% which highlights the importance of considering the existence of catalyst in the bubble phase. Comparing the developed model with published models of the same reactor revealed that the polymer productivity will be higher using the new model at high catalyst feed rate.

Original languageEnglish
Pages (from-to)240-249
Number of pages10
JournalChemical Engineering Journal
Volume161
Issue number1-2
DOIs
Publication statusPublished - 2010

Fingerprint

Homopolymerization
Fluidized beds
Propylene
Gases
kinetics
Kinetics
gas
polymerization
modeling
bubble
Polymers
polymer
catalyst
Polymerization
Catalysts
Polydispersity
emulsion
Emulsions
propylene
reactor

Keywords

  • Fluidized-bed reactor
  • Homopolymerization kinetic model
  • Propylene polymerization
  • Ziegler-natta catalyst

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering
  • Environmental Chemistry

Cite this

Kinetic modeling of propylene homopolymerization in a gas-phase fluidized-bed reactor. / Shamiri, Ahmad; Hussain, Mohamed Azlan; Mjalli, Farouq Sabri; Mostoufi, Navid.

In: Chemical Engineering Journal, Vol. 161, No. 1-2, 2010, p. 240-249.

Research output: Contribution to journalArticle

Shamiri, Ahmad ; Hussain, Mohamed Azlan ; Mjalli, Farouq Sabri ; Mostoufi, Navid. / Kinetic modeling of propylene homopolymerization in a gas-phase fluidized-bed reactor. In: Chemical Engineering Journal. 2010 ; Vol. 161, No. 1-2. pp. 240-249.
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