Question
Alcohol is removed from a mixture of 40:60 alcohol:ketone (weight basis) by washing with water. The entering wash water is from an internal recycle stream
Alcohol is removed from a mixture of 40:60 alcohol:ketone (weight basis) by washing with water. The entering wash water is from an internal recycle stream and contains 4 weight percent alcohol. You are analyzing separations for a 500 kg/hr stream of alcohol:ketone mixture. You have a water:alcohol stream with a mass flow rate of 300 kg/hr available. You may assume water and ketone are completely immiscible and the distribution coefficient is defined below:
= 4.0 = /
a) Calculate the fraction of alcohol removed from the alcohol:ketone stream in a single stage; b) Repeat by considering three cross-current contacting stages. The wash water is divided equally between the three stages; c) Repeat by considering countercurrent contact in three stages.
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