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A counter current packed bed absorption column is used to recover ammonia from a gas mixture containing ammonia - air using water as the solvent. It is desired to recover 90 mole\% of ammonia from 7 mole\% ammonia - air mixture. The gas mixture enters from the bottom of the column with a volumetric flow rate of 8000m3/h at 298 K and 1.1 atm pressure. Water enters from top of the tower with a mass flow rate of 6000kg/h and at 298K. The expected recovery of ammonia will be 90%, and the maximum permissible pressure drop for the gas stream should not exceed 251N/m2. The value of the Henry's law constant for the ammonia - water system corresponding to 298K is H=0.27atm. Assume 72% flooding condition. Use the equilibrium relationship y=mx. Select a suitable packing material, evaluate the following with suitable assumptions wherever necessary. (i) Number of Transfer Units (ii) Flow Parameter (iii) Diameter of Absorption Column (iv) Mass flow rate of liquid per unit cross sectional area of the tower (v) Height of Gas Film and Height of Liquid Film Transfer Units (vi) Operating Velocity of Gas (vii) Liquid Film Mass Transfer Coefficient (viii) Draw a neat diagram of the Absorber with label and dimension