3) Multicomponent Alcohol Distillation An alcohol feed mixture at 101.325kPa (760 mmHg) consisting of 30 % methanol, 20%

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3 Multicomponent Alcohol Distillation An Alcohol Feed Mixture At 101 325kpa 760 Mmhg Consisting Of 30 Methanol 20 1 (209.74 KiB) Viewed 25 times

3) Multicomponent Alcohol Distillation An alcohol feed mixture at 101.325kPa (760 mmHg) consisting of 30 % methanol, 20% ethanol, 15% n- propyl alcohol and 35% n-butyl alcohol is distilled so that 92% of the methanol along with a residue of 8% ethanol and other trace components is recovered in the distillate. The feed is below the boiling point, so that q=1.10. The planned operating reflux ratio is 8.0. Assume Raoult's Law applies. The vapor-pressure at 101.325 kPa (760 mm Hg) is available for several alcohols (in a posted MS-EXCEL workbook) Determine the following: a) Composition and amounts of the distillate and bottoms streams for a feed stream of 1000 mole/hr. b) Top and bottom temperatures and the number of stages at total reflux. c) The distribution of components at the conditions determined in part (b). d) The minimum reflux ratio, and number of stages when R=8.0. e) The feed tray location.