CIVILICA We Respect the Science
(ناشر تخصصی کنفرانسهای کشور / شماره مجوز انتشارات از وزارت فرهنگ و ارشاد اسلامی: ۸۹۷۱)

گواهی نمایه سازی مقاله CFD Modeling of Polyethylene Fluidized Bed Reactor

عنوان مقاله: CFD Modeling of Polyethylene Fluidized Bed Reactor
شناسه (COI) مقاله: PROCESS01_062
منتشر شده در نخستین همایش مهندسی فرآیند در صنایع نفت، گاز، پتروشیمی و انرژی در سال ۱۳۹۲
مشخصات نویسندگان مقاله:

Hossein esmaeili - Department of Chemical Engineering, Islamic Azad University, Bushehr Branch, Bushehr, Iran
salar azizi -

خلاصه مقاله:
Poly propylene (PP) is one of the famous polymers with great application. In this study, CFD model on dynamics of the fluidized bed polyethylene production process has been investigated. A detailed CFD model for sticky poly propylene fluidized bed was formulated in this work. As a result, detailed information on the PSD and hydrodynamic fields of the gas and solid phases can be obtained from the simulations. Defluidization due to particle aggregation also can be simulated. For modeling plant-scale poly propylene reactors, a chemical look-up table should be used to solve efficiently the solid species equations.. In order to address all the issues in FB polymerization, models for simplified polymerization kinetics, polydisperse multiphase flow, and mass and heat transfer between the gas and solid particles are combined together. As a result, physically aggregation because of atactic polypropylene is more important than other aggregation reasons. Finally, as mentioned earlier, after DQMOM is applied to the multi-fluid CFD model, new terms accounting for the effect of aggregation and breakage need to be added on the right-hand sides of the solid-phase momentum, energy, and species equations. These modifications and detailed simulation results for plant-scale fluidized bed polymerization reactors will be reported in future communications

کلمات کلیدی:
Polyethylene, Reactor, Fluidized bed, Kinetic theory, CFD

صفحه اختصاصی مقاله و دریافت فایل کامل: