4. Two flash distillation chambers are hooked together as shown in the diagram. Both are at...

  

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4. Two flash distillation chambers are hooked together as shown in the diagram. Both are at 1 atm pressure. The feed to the first drum is a binary mixture of methanol and water that is 55 mol% methanol. The feed flow rate is 10,000 kg mol/hr. The second flash drum operates with (V/F) = 0.7 and the liquid product composition is 25 mol% methanol. VLE data is given below. What is the fraction vaporized in the first flash drum? What are y1, y2, Xı, Ti and T2? V1 V2 F = 10,000 kg moles/hr P =1 atm P2 =1 atm 1 Xp = 0.55 X2= 0.25 Methanol Mole % Liquid Methanol Mole % Vapor Temperature °C 0.0 100 2.0 13.4 96.4 93.5 4.0 23.0 6.0 30.4 91.2 8.0 10.0 36.5 89.3 41.8 87.7 15.0 51.7 84.4 20.0 57.9 81.7 78.0 30.0 66.5 72.9 40.0 75.3 50.0 77.9 73.1 71.2 60.0 82.5 70.0 87.0 69.3 80.0 91.5 67.6 90.5 95.8 66.0 95.0 97.9 65.0 100.0 100.0 64.5 4. Two flash distillation chambers are hooked together as shown in the diagram. Both are at 1 atm pressure. The feed to the first drum is a binary mixture of methanol and water that is 55 mol% methanol. The feed flow rate is 10,000 kg mol/hr. The second flash drum operates with (V/F) = 0.7 and the liquid product composition is 25 mol% methanol. VLE data is given below. What is the fraction vaporized in the first flash drum? What are y1, y2, Xı, Ti and T2? V1 V2 F = 10,000 kg moles/hr P =1 atm P2 =1 atm 1 Xp = 0.55 X2= 0.25 Methanol Mole % Liquid Methanol Mole % Vapor Temperature °C 0.0 100 2.0 13.4 96.4 93.5 4.0 23.0 6.0 30.4 91.2 8.0 10.0 36.5 89.3 41.8 87.7 15.0 51.7 84.4 20.0 57.9 81.7 78.0 30.0 66.5 72.9 40.0 75.3 50.0 77.9 73.1 71.2 60.0 82.5 70.0 87.0 69.3 80.0 91.5 67.6 90.5 95.8 66.0 95.0 97.9 65.0 100.0 100.0 64.5