Problem:
A mixture of benzene and toluene containing 40 mole % of benzene is to
be separated to give a product of 90 mole % of benzene at the top and
bottom product with not more than 10 mole % of benzene. Using an average
value of 2.4 for the volatility of benzene relative to toluene,
calculate the number of theoretical plates required at total reflux.
Also calculate the minimum reflux ratio, if the feed is liquid and at
its boiling point.
Chemical and Biochemical Engineering Homework Solutions
#5986
Distillation and Number of Plates at Total Reflux: Fenske's Equation
Problem:
A mixture of benzene and toluene containing 40 mole % of benzene is to be separated to give a product of 90 mole % of benzene at the top and bottom product with not more than 10 mole % of benzene. Using an average value of 2.4 for the volatility of benzene relative to toluene, calculate the number of theoretical plates required at total reflux. Also calculate the minimum reflux ratio, if the feed is liquid and at its boiling point.
Fenske's equation is used to calculate the number of plates at total reflux.
The solution is detailed and well presented.
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