کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
151590 456475 2010 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Kinetic modeling of propylene homopolymerization in a gas-phase fluidized-bed reactor
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Kinetic modeling of propylene homopolymerization in a gas-phase fluidized-bed reactor
چکیده انگلیسی

A comprehensive mechanistic model describing gas-phase propylene polymerization is developed. The kinetics of polymerization is based on a multiple active site for Ziegler–Natta catalyst. The model considers the polymerization reaction to take place in both bubble and emulsion phases. The developed model was used to predict polymer production rate, number and weight average molecular weights, polydispersity index (PDI) and melt flow index (MFI). Results showed that by increasing the superficial gas velocity from 0.1 to 0.7 m/s the proportion of the polymer produced in the bubble phase increases from 7.92% to 13.14% which highlights the importance of considering the existence of catalyst in the bubble phase. Comparing the developed model with published models of the same reactor revealed that the polymer productivity will be higher using the new model at high catalyst feed rate.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 161, Issues 1–2, 1 July 2010, Pages 240–249
نویسندگان
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