We wish to flash distill an ethanol-water liquid mixture that is 60 wt% ethanol and has a feed flow of 500 kg/h. Feed is at 314C. The flash drum operates at a pressure of 1 kg/cm. Data: PLE = 43.84 kcal/kmol.C (at 157C), CLW =18.0 kcal kmol. C, MW, = 46.07, MW, =18.02 1. Identify and define the problem to show which solution method is more appropriate for solving this problem. (10 points) [Identification (5) + answer (5) 2. Apply the suitable mathematics and engineering basic equations to formulate and model the problem and solve it to find the temperature inside the drum. (20 points) (Correct formula for z (2) + substitution and calculation (2) + correct formula for MW (1) - substitution and calculation (2) + correct formula for enthalpy (3) + substitution calculation and units (5) + correct T, drawing in hx plot and units (5)] 600 600 500 Darline these 500 Lillary Line for Interpolating Equilibrium Compositions 400 400 Enthalpy, K Col kg. 300 300 99/G .88 .64 er 879 BE 84" .67 -88 27656 7789/ 200 86 83* 200 809 xisothermal eine eo*c. Ardotrophe Composition 100 100 Bowling Ling Ko /seen 100* 80 60 40 90 Liquid O Walar ofa o Frering Line Solid Ice 0C -100 0 ho 01 0.2 -100 0.7 03 04 0.5 06 Concentration of Alcohol, Waight Fraction 0.8 0.9 GHOH Enthalpy-composition diagram for ethanol-water at a pressure of 1 kg/cm? (Bosn Technische Thermodynamik, T. Steinkopff, Leipzig, 1935) 3. Determine the ethanol weight fractions in both the liquid and vapor products. (10 points) [Correct drawing 6 + answers (4)] + 4. Calculate the mass flow rates of both liquid and vapor products (10 points) [Correct formulas (3) + substitution and calculation (5) - units (2)]