Question: A distillation column with feed entering the middle section is made of acetone and ethanol. The feed flow rate is 100 mol/min. Feed is 60.0

A distillation column with feed entering the middle section is made of acetone and ethanol. The feed flow rate is 100 mol/min. Feed is 60.0 mol% acetone and is saturated vapor. A liquid side product is withdrawn from the second stage below the total condensor at a flow rate S=15.0 mol/min. Reflux is returned as a saturated liquid. Distillate is 90 mol% acetone. External reflux ratio is L/D=7/2, Column pressue is 1atm. Column is adiabatic and CMO is valid. Find mole fraction of acetone in the sidestream, mole fraction of acetone in the bottoms, and number of equillibrium stages required.

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