Dynamic modeling of gas phase propylene homopolymerization in fluidized bed reactors
A new model with comprehensive kinetics for propylene homopolymerization in fluidized bed reactors was developed to investigate the effect of mixing, operating conditions, kinetic and hydrodynamic parameters on the reactor performance as well as polymer properties. Presence of the particles in the b...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2011
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/9778/1/00012476_86008.pdf |
| _version_ | 1825719763629768704 |
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| author | Shamiri, A. Hussain, Mohd Azlan Mjalli, F.S. Mostoufi, N. Shafeeyan, M.S. |
| author_facet | Shamiri, A. Hussain, Mohd Azlan Mjalli, F.S. Mostoufi, N. Shafeeyan, M.S. |
| author_sort | Shamiri, A. |
| collection | UM |
| description | A new model with comprehensive kinetics for propylene homopolymerization in fluidized bed reactors was developed to investigate the effect of mixing, operating conditions, kinetic and hydrodynamic parameters on the reactor performance as well as polymer properties. Presence of the particles in the bubbles and the excess gas in the emulsion phase was considered to improve the two-phasemodel,thus,
considering the polymerization reaction to take place in both the bubble and emulsion phases. It was
shown that in the practical range of superficial gas velocity and catalyst feedrate,the ratio of produced
polymer in the bubble phase to the total production rate is roughly between 10% and 13%, which is a substantial amount and cannot be ignored. Simulation studies were carried out to compare the results of the improved two-phas, conventional well-mixed and constant bubble size models. The improved two-phase and well mixed models predicted a narrower and safer window at the same running conditions compared with the constant bubble size model. The improved two-phase model showed close dynamic behavior to the conventional models at the beginning of polymerization, but starts to diverge with the evolution of time. |
| first_indexed | 2024-03-06T05:24:44Z |
| format | Article |
| id | um.eprints-9778 |
| institution | Universiti Malaya |
| language | English |
| last_indexed | 2024-03-06T05:24:44Z |
| publishDate | 2011 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | um.eprints-97782021-02-10T03:50:04Z http://eprints.um.edu.my/9778/ Dynamic modeling of gas phase propylene homopolymerization in fluidized bed reactors Shamiri, A. Hussain, Mohd Azlan Mjalli, F.S. Mostoufi, N. Shafeeyan, M.S. QA Mathematics TA Engineering (General). Civil engineering (General) TP Chemical technology A new model with comprehensive kinetics for propylene homopolymerization in fluidized bed reactors was developed to investigate the effect of mixing, operating conditions, kinetic and hydrodynamic parameters on the reactor performance as well as polymer properties. Presence of the particles in the bubbles and the excess gas in the emulsion phase was considered to improve the two-phasemodel,thus, considering the polymerization reaction to take place in both the bubble and emulsion phases. It was shown that in the practical range of superficial gas velocity and catalyst feedrate,the ratio of produced polymer in the bubble phase to the total production rate is roughly between 10% and 13%, which is a substantial amount and cannot be ignored. Simulation studies were carried out to compare the results of the improved two-phas, conventional well-mixed and constant bubble size models. The improved two-phase and well mixed models predicted a narrower and safer window at the same running conditions compared with the constant bubble size model. The improved two-phase model showed close dynamic behavior to the conventional models at the beginning of polymerization, but starts to diverge with the evolution of time. Elsevier 2011 Article PeerReviewed application/pdf en http://eprints.um.edu.my/9778/1/00012476_86008.pdf Shamiri, A. and Hussain, Mohd Azlan and Mjalli, F.S. and Mostoufi, N. and Shafeeyan, M.S. (2011) Dynamic modeling of gas phase propylene homopolymerization in fluidized bed reactors. Chemical Engineering Science. pp. 1189-1199. DOI https://doi.org/10.1016/j.ces.2010.12.030 <https://doi.org/10.1016/j.ces.2010.12.030>. doi:10.1016/j.ces.2010.12.030 |
| spellingShingle | QA Mathematics TA Engineering (General). Civil engineering (General) TP Chemical technology Shamiri, A. Hussain, Mohd Azlan Mjalli, F.S. Mostoufi, N. Shafeeyan, M.S. Dynamic modeling of gas phase propylene homopolymerization in fluidized bed reactors |
| title | Dynamic modeling of gas phase propylene homopolymerization in fluidized bed reactors |
| title_full | Dynamic modeling of gas phase propylene homopolymerization in fluidized bed reactors |
| title_fullStr | Dynamic modeling of gas phase propylene homopolymerization in fluidized bed reactors |
| title_full_unstemmed | Dynamic modeling of gas phase propylene homopolymerization in fluidized bed reactors |
| title_short | Dynamic modeling of gas phase propylene homopolymerization in fluidized bed reactors |
| title_sort | dynamic modeling of gas phase propylene homopolymerization in fluidized bed reactors |
| topic | QA Mathematics TA Engineering (General). Civil engineering (General) TP Chemical technology |
| url | http://eprints.um.edu.my/9778/1/00012476_86008.pdf |
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