In a two stage process acetic acid (A) is extracted from water (W) into hexanol (H) in a
liquid-liquid extraction vessel and the extract is subsequently separated by distillation.
Assume that water is completely insoluble in hexanol. A mixture of 18wt% acetic acid and
the balance water is fed to a liquid-liquid extraction vessel. Pure hexanol is fed to the
column to extract the acetic acid. The water-rich stream leaving the vessel is 99.5wt%
water and the balance acetic acid. The hexanol-rich extract from the vessel is fed to a
distillation column. The composition of the distillate is 96wt% acetic acid and the balance
hexanol. The bottoms stream contains 97.2wt% hexanol and recovers 95% of the hexanol
fed to the liquid-liquid extraction vessel.
a)Perform degrees of freedom analysis for overall system and subsystems.
b)Calculate the percentage of acetic acid in the process feed that is recovered in the
distillate stream.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
