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1 1 . 6 - 3 . Minimum Reflux and Theoretical Number of Trays. A feed of ethanol - water containing 6 0 w t
Minimum Reflux and Theoretical Number of Trays. A feed of ethanolwater containing ethanol is to be distilled at kPa pressure to give a distillate containing ethanol and a bottoms containing ethanol. The feed rate is and its enthalpy is Use consistent units of weight fraction, and
a Calculate the amount of distillate and bottoms.
b Determine the minimum reflux ratio using enthalpyconcentration data from Appendix A
c Using times the minimum reflux ratio, determine the theoretical number of trays needed.
d Calculate the condenser and reboiler heat loads.
e Determine the minimum number of theoretical plates at total reflux.
Ans. b
c theoretical trays plus reboiler
d
e theoretical trays plus reboiler
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