سال انتشار: ۱۳۸۶
محل انتشار: پنجمین کنگره بین المللی مهندسی شیمی
تعداد صفحات: ۱۳
Zivdar – Department of Chemical Engineering, University of Sistan and Baluchestan, Zahedan,98164, Iran
Tanhaei – Department of Chemical Engineering, University of Sistan and Baluchestan, Zahedan,98164, Iran
Rahimi – Department of Chemical Engineering, University of Sistan and Baluchestan, Zahedan,98164, Iran
Haghshenas Fard – Department of Chemical Engineering, Islamic Azad University, Shahreza branch, Isfahan, Iran
250Y, Flexipak 1Y and Gempak 1A). Model parameters were evaluated in two dimensional simulations using two-fluid model and standard k- ε turbulence model .By predicting the liquid film thickness, liquid hold up can be calculated from theoretical model . In this paper, in all the packings by approaching to the flooding point, the thickness of the liquid film will increase, due to direct correlation of the liquid accumulation with liquid film thickness, in all of the packings the liquid accumulation will increase. It is observed that the packing Mellapak 250Y at the flow rate of the gas higher than 2.21m/s would flooding and these flow rates for the packings Mellapak250X, Flexipak1Y and Gempak1A are 2.75m/s, 2.33m/s and 0.98m/s respectively. The results agree well with experimental data available from the literatures.The average relative error for prediction of liquid hold-up in Mellapak 250 Y, Mellapak 250 X, Flexipak 1Y and Gempak 1A are 15.20%,17.6%,14.98% and 13.04% respectively.