In this work we provide an overview of various aspects of modelling heterogeneous Ziegler-Natta polymerization. Starting from a detailed description of the polymer particle growth, we compare the model results with two series of experimental data obtained with slurry and gas-phase laboratory reactors, respectively. From the comparison it follows that the model provides a reliable description of both the kinetic behaviour of the reaction and of the influence of resistances to mass and heat transport. An aspect of specific interest refers to the description of the molecular weight distribution. A method for the detailed analysis of these distributions is proposed and the results compared with experimental data. Finally, a steady-state analysis of particle behaviour is performed, allowing the determination of critical situations leading to overheating (and then melting) of the polymer particle.

Modelling of Ziegler-Natta olefin polymerization

STORTI, GIUSEPPE;MORBIDELLI, MASSIMO;CARRA', SERGIO
1996-01-01

Abstract

In this work we provide an overview of various aspects of modelling heterogeneous Ziegler-Natta polymerization. Starting from a detailed description of the polymer particle growth, we compare the model results with two series of experimental data obtained with slurry and gas-phase laboratory reactors, respectively. From the comparison it follows that the model provides a reliable description of both the kinetic behaviour of the reaction and of the influence of resistances to mass and heat transport. An aspect of specific interest refers to the description of the molecular weight distribution. A method for the detailed analysis of these distributions is proposed and the results compared with experimental data. Finally, a steady-state analysis of particle behaviour is performed, allowing the determination of critical situations leading to overheating (and then melting) of the polymer particle.
1996
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/659403
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