A gas absorber has to be designed to handle 900 m3/hr of coal gas containing 2% benzene (by volume). Coal gas enters the absorber at a temperature of 300 K containing 0.005 mole fraction of benzene and has an average molecular weight of 260. You are asked to Calculate the circulation rate of solvent per second if the column is to be operated at 1.4 times the minimum value. The equilibrium relationship is given as where, Y and X are the mole ratios of benzene to dry gas and to solvent, respectively.