(Solved): The figure below depicts a propylene/propane distillation. Two sieve-tray columns in series are use ...

The figure below depicts a propylene/propane distillation. Two sieve-tray columns in series are used because a 270-tray column poses structural problems. Determine column diameters, tray efficiency using the O'Connell correlation, number of actual trays, and column heights. 180 116°F 280 psia 3.5 lbmol/h of C? 90 Bubble-point liquid feed 91 55 Ibmol/h 360 1 240 135.8°F 300 psia Li LID 15.9 12.51 Ibmol/hr C3