5.2
Absorption Column Design
W = 861.752 Kg-mol/hr Equilibrium relationship = y = x(solute free) y = mx At bottom of tower
y1 0.2305 so 0.2305 SMF solute.mole. fraction 0.299 1 0.2305 SFG mole. fraction.solute. free.gas A 461.591Kgmol / hr 0.128Kgmol / sec y1
5.2.1 Number Of Plates y2 0.00105 0.00105 0.00105 1 0.00105 y1 y2 N 1 (Souders and Brown equation) y1 mx2 N 1 1
y2
Absorption.Factor
W 1.86 mA
N 1 0.9964 N 1 1 N 7.83 Assuming Tray spacing 24” from graph Kv = 0.30ft L 62.4lb / ft 3 M g 0.0332(32) 0.0138(32) 0.2305(30) 0.2317(18) 0.4876(28) 26.3lb / lbmol
g
PM g RT
1.35atm * 26.3 0.044lb / ft 3 0.7302*1108
63