On the Production of Polyolefins with Bimodal Molecular Weight and Copolymer Composition Distributions in Catalytic Gas-Phase Fluidized-Bed Reactors
✍ Scribed by Christos Chatzidoukas; Vassileios Kanellopoulos; Costas Kiparissides
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 343 KB
- Volume
- 16
- Category
- Article
- ISSN
- 1022-1344
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✦ Synopsis
Abstract
A comprehensive mathematical model is developed for the dynamic calculation of the molecular distributed properties (i.e. MWD and CCD) in a gas‐phase, catalytic, ethylene‐1‐butene copolymerization, FBR, taking into account the various kinetic, micro‐ and macroscopic phenomena in the reactor. The effects of the two single‐site catalyst mass fractions and reactor operating conditions on the production of polyolefins with ‘tailor‐made’ bimodal molecular properties are investigated. It is shown that PE grades with either a bimodal MWD or CCD can be produced in a single FBR, using a mixture of two single‐site catalysts under properly selected operating conditions.
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