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 language | English |
|---|---|
| Pages (from-to) | 240-249 |
| Number of pages | 10 |
| Journal | Chemical Engineering Journal |
| Volume | 161 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 2010 |
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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 journal › Article
}
TY - JOUR
T1 - Kinetic modeling of propylene homopolymerization in a gas-phase fluidized-bed reactor
AU - Shamiri, Ahmad
AU - Hussain, Mohamed Azlan
AU - Mjalli, Farouq Sabri
AU - Mostoufi, Navid
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - Fluidized-bed reactor
KW - Homopolymerization kinetic model
KW - Propylene polymerization
KW - Ziegler-natta catalyst
UR - http://www.scopus.com/inward/record.url?scp=77958469106&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77958469106&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2010.04.037
DO - 10.1016/j.cej.2010.04.037
M3 - Article
VL - 161
SP - 240
EP - 249
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
IS - 1-2
ER -