A stripping column packed with 2 in. metal Pall rings uses air at 5 psig and 808C to strip an impurity from an absorber oil (SG 0:9, viscosity 5 cP,...

6. A stripping column packed with 2 in. metal Pall rings uses air at 5 psig and 808C

to strip an impurity from an absorber oil (SG ¼ 0:9, viscosity ¼ 5 cP,

T ¼ 208C). If the flow rate of the oil is 500 lbm/min and that of the air is 20

lbm/min,

(a) What is the minimum column diameter that can be used without flooding?

(b) If the column diameter is 50% greater than the minimum size, what is the

pressure drop per ft of column height?