Q2: A multistage column with a total condenser and a total reboiler will be used to separate a mixture of 40 moles percent methanol and 60 moles percent n-propanol. At 400 kmol/h, saturated liquid feed is introduced to the column. Reflux ratio is 3/2 and is returned as a saturated liquid. The distillate should contain 85 moles of methanol, while the bottom stream should have 2 moles. Operating conditions for the column are adiabatic and at 1 atm. a) Determine the total number of equilibrium stages and the optimum feed stage. b) Saturated liquid is removed from the column at a rate of 100 kmol/h, and the stream's methanol level is 50 mole %. Find the optimum feed stage, side stream stage and the total number of equilibrium stages. c) Two side streams are withdrawn from the third column design. The first side stream is a saturated liquid with a 50 mole% methanol content that is removed from the column at a rate of 100kmol / h The second side stream is a saturated vapor that is removed from the column at a rate of 75kmol / h giving it a 30 mol% methanol composition. Find the optimum feed stage, optimum side stream stages and the total number of equilibrium stages. Note: All of the feed stream, distillate, and bottom composition conditions are the same for parts a, b, and c.

Q2: A multistage column with a total condenser and a total reboiler will be used to separate a mixture of 40 moles percent methanol and 60 moles percent n-propanol. At 400kmol/h, saturated liquid feed is introduced to the column. Reflux ratio is 3/2 and is returned as a saturated liquid. The distillate should contain 85 moles of methanol, while the bottom stream should have 2 moles. Operating conditions for the column are adiabatic and at 1atm. a) Determine the total number of equilibrium stages and the optimum feed stage. b) Saturated liquid is removed from the column at a rate of 100kmol/h, and the stream's methanol level is 50 mole \%. Find the optimum feed stage, side stream stage and the total number of equilibrium stages. c) Two side streams are withdrawn from the third column design. The first side stream is a saturated liquid with a 50 mole\% methanol content that is removed from the column at a rate of 100kmol/h. The second side stream is a saturated vapor that is removed from the column at a rate of 75kmol/h, giving it a 30mol% methanol composition. Find the optimum feed stage, optimum side stream stages and the total number of equilibrium stages. Note: All of the feed stream, distillate, and bottom composition conditions are the same for parts a,b, and c