علي قره خان

Liquid-liquid extraction process is one of the most important processes used in the refining, oil and gas industry. In this research, the study and simulation of oldshue-rashton column in terms of hydrodynamics and mass transfer has been done. In the investigated column, the continuous phase is oxidized diesel and the dispersed phase is DMF solvent. According to the studies, it can be concluded that the use of a hybrid model of computational fluid dynamics is a good and comprehensive method to eva‎luate the hydrodynamic behavior and mass transfer of the oldshue-rashton extraction column. Which is used to simulate turbulence from the RNG K-ε and to simulate the multiphase system from the Ulrin-Ulrin method . The effects of agitator velocity (100 to 200 rpm) and equal inlet flow velocities for continuous and extended phases (99 ml / min) on hold up, sulfur removal were investigated using simulation in FLUENT software . For system validation, hold up ,mass transfer and system power have been used. The optimum point in flow rate is 35 mL / min and the velocity is 107 rpm, at which point the hold up is approximately 0.0085. As predicted, desulfurization increased with increasing solvent flow rate and impeller velocity. At the optimal point, the desulfurization rate is approximately 92%, which is 6% different from the experimental result

ستون استخراج , اولدشو-راشتون , ديناميك سيالات محاسباتي , انتقال جرم

extraction column , Oldshue-rashton , CFD , mass transfer

Ali Gharakhan

Dr. Shahrokh Shah Hosseini