5. (20 points) An engineer plans to use a single flash distillation unit at 98 kPa to separate 20 kg/min of a mixture at

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5 20 Points An Engineer Plans To Use A Single Flash Distillation Unit At 98 Kpa To Separate 20 Kg Min Of A Mixture At 1 (191.8 KiB) Viewed 9 times

5. (20 points) An engineer plans to use a single flash distillation unit at 98 kPa to separate 20 kg/min of a mixture at 10 °C containing 20% w/w of ethanol and 80% w/w water. The target is to obtain a vapor stream with 75% w/w of ethanol. Is this operation possible? You must answer YES or NO and provide a brief explanation for credit. Enthalpy, Kcal/Kg. 600 500 400 300 S 200 100) Water 0°C. ICO. Ice 0°C. -100 2/545527 Auxiliary Line for Interpolating Equilibrium Compositions H₂O Solid 0.1 £6 91⁰ 99 90° 0.2 88 87 Boiling Line 1Kg/sq cm Freezing Line 86 Dew-line, 1kg/sq. cm. 85 84⁰ 83 100°C 80° 60° 40° 82 20 Liquid ·0⁰ •-20⁰ 18 six 79.5* 80.5 Isothermal tiejine 80°C 0.7 0.8 600 0.9 500 400 0.3 0.4 0.5 0.6 Concentration of Alcohol, Weight Fraction H-z-y diagram for the system Ethanol-Water from Bosnjakovic (1935), Technische Thermodynamik. 300 200 100 0 -100 CHOM