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✦   LIBER   ✦

Particle growth modeling of gas phase polymerization of butadiene

✍ Scribed by Jianzhong Sun; Christopher Eberstein; Karl-Heinz Reichert

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
248 KB
Volume
64
Category
Article
ISSN
0021-8995

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✦ Synopsis

Butadiene polymerization in the gas phase is modeled by a polymeric multilayer model. Intraparticle mass and heat transfer effects are studied. The effects of catalyst size and diffusivity of butadiene on the radial profile of monomer concentration in polymeric particles and on the rate of particle growth are significant. Intraparticle temperature gradients do appear to be negligible under normal reaction conditions. External boundary layer heat effects are studied for various operation conditions. The model predicts that there is no significant temperature rise of the polymeric particles, even in the case of large catalyst particles. The effect of deactivation of active sites on the rate of particle growth is also studied.

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✍ Junzi Zhao; Jianzhong Sun; Qiyun Zhou; Zuren Pan πŸ“‚ Article πŸ“… 2001 πŸ› John Wiley and Sons 🌐 English βš– 358 KB πŸ‘ 1 views

## Abstract The improved multigrain model was used to simulate the gas phase polymerization of butadiene catalyzed by low‐, medium‐, and high‐activity catalysts, respectively. For the low‐activity catalyst, the mass and heat transfer resistances in the particle were negligible. The morphology of th