a) Benzene vapor (C 6 H 6 ) present at a concentration of 0.030 kg…

Question a) Benzene vapor (C 6 H 6 ) present at a concentration of 0.030 kg… a) Benzene vapor (C6H6) present at a concentration of 0.030 kg benzene/kg air is to be removed passing the effluent air stream downward through a bed of silica gel at 323 K and 2 atm pressure at superficial velocity of 0.5 m/s. Silica gel has a solid particle density of 1,250 kg/m3. The bed has a packing depth of 3 m, cross sectional area of 1 m2 and the porosity of 50%. Calculate the time required to reach a breakthrough point if the bed efficiency is 85%.       Under these conditions the adsorption isotherm is:Y = 0.167 w1.3       Where Y = kg benzene/kg air (benzene- free basis) and w = kg benzene/kg gel.        b) If we want to increase the breakthrough time from part (a) by 50%, by how much the bed depth should be increased considering that all other conditions remain the same? What is the new bed efficiency?  Engineering & Technology Chemical Engineering CHEMICAL E 6314 Share QuestionEmailCopy link Comments (0)