Q: A total of 2,000 gallons of 70 wt% ethanol in water, having a specific gravity of 0.871, is to be separated at 1 atm in
(a) The number of theoretical plates required in the column,
(b) The reflux ratio when the concentration of ethanol in the pot is 25 mol%,
(c) The instantaneous distillate rate in lbmol/h when the concentration of ethanol in the pot is 15 mol%,
(d) The lbmol of distillate product, and
(e) The lbmol of residual wastewater. Vapor-liquid equilibrium data are given in Exercise 7.29.
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Step: 1
First compute compositions in moles Density of charge 8330871 726 lbgal Amount of charge 7262000 14500 lb Molecular weights are 4607 for ethanol and 1802 for water Lbmoles of ethanol in the charge 145... View full answer

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