In a packed bed tower air is purified from methanol by using water. Tower has a cross sectional area of 4000 cm? and system operates at 313.1 K and 101.32 kPa. The inlet air contains 15 mol% methanol...

Extracted text: In a packed bed tower air is purified from methanol by using water. Tower has a cross sectional area of 4000 cm? and system operates at 313.1 K and 101.32 kPa. The inlet air contains 15 mol% methanol and at outlet the concentration of methanol drops to 3 mol%. The gas flow is 50 kg mol inert air/h. The pure inlet flow is 90 kg mol water/h. Film coefficients for the given flows in the tower are k',a= 0.08 kg mol/s.m³.mol frac and k',a= 0.03 kg mol/s.m³.mol frac. Equilibrium data is given below. Calculate the tower height. Equilibrium data for methanol-water system at 313.1 K Mole fraction Methanol Partial pressure of in Liquid, xA methanol in vapor pA (mmHg) 0.05 25.0 0.10 46.0 0.15 66.5