سال انتشار: ۱۳۸۸
محل انتشار: ششمین کنگره بین المللی مهندسی شیمی
تعداد صفحات: ۷
Shokoufeh Hakim – Department of Polymerization Engineering, Iran Polymer and Petrochemical Institute, P.O.Box:14965/115, Tehran, Iran
Masoud Shiri – Department of Polymerization Engineering, Iran Polymer and Petrochemical Institute, P.O.Box:14965/115, Tehran, Iran
By simultaneous solution of the population balance equations for living and dead polymer chains coupled with the method of moments and heat and mass transfer equations at micro- and macroparticle levels in multigrain model, the particle growth, PDI, average molecular weights and concentration of reactants in a semi-batch gas phase ethylene polymerization reactor as a function of time have been predicted. The effect of variation of the concentration of site types 1 and 2 in a two-site Ziegler-Natta catalyst has been discussed .