Experimental Study of Height and Number of Transfer Unit in Rotating Packed Bed and Conventional Column

Height of transfer unit (HTU) and number of transfer unit (NTU) are important factors to achieve maximum possible efficiency in pecked beds. In this work, in order to eliminate lack of previous studies, HTU and NTU were investigated for many absorption systems, such as CO2-MDEA, CO2-MEA, CO2-AMP, CO2-PZ, CO2-NaOH, and volatile organic compounds including iso propyl alcohol, acetone, ethyl acetate, methanol, ethanol and iso butanol. The effects of various inner packed radius, outer packed radius and height of packed zone, different packing type and contact flow regimes on the height and number of transfer unit were investigated in mentioned systems. The results indicated deep influence of operating parameters on the HTU and NTU in rotating packed bed (RPB). Also, the performance of RPB and conventional packed bed was evaluated. It was found that higher transfer unit and efficiency with lower volume of experimental setup is distinguished factors cause to preferred RPB in comparison to conventional packed beds.