Using an absorption tower packed with two-inch ceramic Intalox saddles, 90% of SO2 is wanted to be removed from a gas stream of 85m3/min containing 3%SO2 by volume at 293 K and 101.3kPa. If the operating liquid flow rate and gas flow rate are 3710kg/min and 102.7kg/min successively, determine the packed bed tower diameter. (Hint: The gas velocity should be no greater than 75% of the flooding velocity.) (water=1000kg/m3,MWair=29g/mol,gc=9.82kg/m2s,=1.0,l=0.0008Pa.sFp=131m2/m3,R=8.314LkPa/Kmol)