Repeat Example 4.3 using metal Raschig Super-Rings No. 2 as packing material.

Data From Example 4.3:-

For the two packing materials considered in Example 4.2, calculate the column inside diameter and pressure drop of the gas for operation at 70% of the flooding superficial gas-velocity.

Data From Example 4.2:-

Air containing 5 mol% NH₃ at a total flow rate of 20 kmol/h enters a packed column operating at 293 K and 1 atm where 90% of the ammonia is scrubbed by a countercurrent flow of 1500 kg/h of pure liquid water. Estimate the loading and flooding superficial gas velocities for two packing materials:

(a) 25-mm ceramic Raschig rings

(b) 25-mm metal Hiflow rings