Mathematical model and advanced control for gas-phase olefin polymerization in fluidized-bed catalytic reactors
In this study, the developments in modeling gas-phase catalyzed olefin polymerization fluidized-bed reactors (FBR) using Ziegler-Natta catalyst is presented. The modified mathematical model to account for mass and heat transfer between the solid particles and the surrounding gas in the emulsion phas...
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Chinese Journal of Chemical Engineering
2008
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my.um.eprints.70422021-02-10T03:46:50Z http://eprints.um.edu.my/7042/ Mathematical model and advanced control for gas-phase olefin polymerization in fluidized-bed catalytic reactors Ibrehem, A.S. Hussain, Mohd Azlan Ghasem, N.M. TA Engineering (General). Civil engineering (General) TP Chemical technology In this study, the developments in modeling gas-phase catalyzed olefin polymerization fluidized-bed reactors (FBR) using Ziegler-Natta catalyst is presented. The modified mathematical model to account for mass and heat transfer between the solid particles and the surrounding gas in the emulsion phase is developed in this work to include site activation reaction. This model developed in the present study is subsequently compared with well-known models, namely, the bubble-growth, well-mixed and die constant bubble size models for porous and non porous catalyst. The results we obtained from the model was very close to the constant bubble size model, well-mixed model and bubble growth model at the beginning of the reaction but its overall behavior changed and is closer to the well-mixed model compared with the bubble growth model and constant bubble size model after half an hour of operation. Neural-network based predictive controller are implemented to control the system and compared with the conventional PID controller, giving acceptable results. Chinese Journal of Chemical Engineering 2008 Article PeerReviewed Ibrehem, A.S. and Hussain, Mohd Azlan and Ghasem, N.M. (2008) Mathematical model and advanced control for gas-phase olefin polymerization in fluidized-bed catalytic reactors. Chinese Journal of Chemical Engineering, 16 (1). pp. 84-89. ISSN 1004-9541 http://www.scopus.com/inward/record.url?eid=2-s2.0-40249111573&partnerID=40&md5=dec97d4a8f4fb8d52db3d97814368b62 Doi 10.1016/S1004-9541(08)60042-7 |
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TA Engineering (General). Civil engineering (General) TP Chemical technology Ibrehem, A.S. Hussain, Mohd Azlan Ghasem, N.M. Mathematical model and advanced control for gas-phase olefin polymerization in fluidized-bed catalytic reactors |
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In this study, the developments in modeling gas-phase catalyzed olefin polymerization fluidized-bed reactors (FBR) using Ziegler-Natta catalyst is presented. The modified mathematical model to account for mass and heat transfer between the solid particles and the surrounding gas in the emulsion phase is developed in this work to include site activation reaction. This model developed in the present study is subsequently compared with well-known models, namely, the bubble-growth, well-mixed and die constant bubble size models for porous and non porous catalyst. The results we obtained from the model was very close to the constant bubble size model, well-mixed model and bubble growth model at the beginning of the reaction but its overall behavior changed and is closer to the well-mixed model compared with the bubble growth model and constant bubble size model after half an hour of operation. Neural-network based predictive controller are implemented to control the system and compared with the conventional PID controller, giving acceptable results. |
| format |
Article |
| author |
Ibrehem, A.S. Hussain, Mohd Azlan Ghasem, N.M. |
| author_facet |
Ibrehem, A.S. Hussain, Mohd Azlan Ghasem, N.M. |
| author_sort |
Ibrehem, A.S. |
| title |
Mathematical model and advanced control for gas-phase olefin polymerization in fluidized-bed catalytic reactors |
| title_short |
Mathematical model and advanced control for gas-phase olefin polymerization in fluidized-bed catalytic reactors |
| title_full |
Mathematical model and advanced control for gas-phase olefin polymerization in fluidized-bed catalytic reactors |
| title_fullStr |
Mathematical model and advanced control for gas-phase olefin polymerization in fluidized-bed catalytic reactors |
| title_full_unstemmed |
Mathematical model and advanced control for gas-phase olefin polymerization in fluidized-bed catalytic reactors |
| title_sort |
mathematical model and advanced control for gas-phase olefin polymerization in fluidized-bed catalytic reactors |
| publisher |
Chinese Journal of Chemical Engineering |
| publishDate |
2008 |
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http://eprints.um.edu.my/7042/ http://www.scopus.com/inward/record.url?eid=2-s2.0-40249111573&partnerID=40&md5=dec97d4a8f4fb8d52db3d97814368b62 |
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13.211869 |