Dynamic modeling of gas phase propylene homopolymerization in fluidized bed reactors

Ahmad Shamiri, Mohamed Azlan Hussain*, Farouq Sabri Mjalli, Navid Mostoufi, Mohammad Saleh Shafeeyan

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةمراجعة النظراء

34 اقتباسات (Scopus)

ملخص

A new model with comprehensive kinetics for propylene homopolymerization in fluidized bed reactors was developed to investigate the effect of mixing, operating conditions, kinetic and hydrodynamic parameters on the reactor performance as well as polymer properties. Presence of the particles in the bubbles and the excess gas in the emulsion phase was considered to improve the two-phase model, thus, considering the polymerization reaction to take place in both the bubble and emulsion phases. It was shown that in the practical range of superficial gas velocity and catalyst feed rate, the ratio of produced polymer in the bubble phase to the total production rate is roughly between 10% and 13%, which is a substantial amount and cannot be ignored. Simulation studies were carried out to compare the results of the improved two-phase, conventional well-mixed and constant bubble size models. The improved two-phase and well mixed models predicted a narrower and safer window at the same running conditions compared with the constant bubble size model. The improved two-phase model showed close dynamic behavior to the conventional models at the beginning of polymerization, but starts to diverge with the evolution of time.

اللغة الأصليةEnglish
الصفحات (من إلى)1189-1199
عدد الصفحات11
دوريةChemical Engineering Science
مستوى الصوت66
رقم الإصدار6
المعرِّفات الرقمية للأشياء
حالة النشرPublished - مارس 15 2011

ASJC Scopus subject areas

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