سال انتشار: ۱۳۹۱

محل انتشار: اولین کنفرانس بین المللی نفت، گاز، پتروشیمی و نیروگاهی

تعداد صفحات: ۶

نویسنده(ها):

Auob Safari – Chemical engineering department, Islamic Azad University, Lamerd branch, Lamerd, Iran

چکیده:

Calculation of mass transfer parameters in a 75 mm diameter, 1.5 m height, pulsed packed column has been done using plug flow model (PFM) and axialdispersion model (ADM). Number of 36 experiments was done using water/acetone/toluene system with mass (acetone) transferring fromorganic to aqueous phase. In PFM, volumetric overall mass transfer coefficient, Koca will be obtained from optimization of experimental data but in ADM beside K oca, axialdispersion coefficients of phases (E c and Ed) will be optimized too. Almost all Koca values obtained from ADM is more than those obtained using PFM. in an extraction column to have the best performance, operating conditions (here Qc,Qd and Af) should be adjusted to have a large mass transfer coefficient (Koca) and low axial dispersion coefficients (E d,Ec), so effect of pulse intensity (Af) and dispersed phaseflow rate (Qd) have been considered here. With increase in Qd all of Koca, Ed and Ec have been increased permanently. In 1<Af<1.2 we observed minimum values for both Ed and Ec and maximum value for Koca.