چکیده (انگلیسی):

The sweetening process is investigated in this paper. The superficial velocity and the characteristic length is evaluated in this research. The results dhow the X factor as sweetening index is improved with the increasing the characteristic length and the decreasing the superficial velocity. In addition, the increase in the amount of charachtristic length which is done in the experiments by the increase in the height of bed is considered to evaluate the values of pressure drop through the nano catalytic packed bed.