


CONFIDENTIAL BKC/1617/BKF2343 QUESTION 1 An equimolar vapor mixture of n-pentane and n-hexane at 110°C and 1 atm is fed into a condenser at a rate of 200 L min When the feed is cooled and compress...
An equimolar vapor mixture of n-pentane and n-hexane at 100 °C and 1 atm is fed at a rate of 150 SCMH to a condenser at 40 °C where there is partial condensation of the mixture. 60% of the initial feed is condensed. Do a degree of freedom analysis to demonstrate that you can solve for all molar flow rates, then calculate them. How much heat must be transferred from the mixture in the condensation process?
4.42. An equimolar liquid mixture of benzene and toluene is separated into two product streams by distillation. A process flowchart and a somewhat oversimplified description of what happens in the process follow: Vapor-97% mole benzene Overhead product Reflux n(mol) n1(mol) CONDENSER Feed 100 mol DISTILLATION COLUMN 0.500 mol B/mol 0.500 mol T/mol Boilup yBmol B(v)/mol] Bottoms product REBOILER *B[mol B(1)/mol] Inside the column a liquid stream flows downward and a vapor stream rises. At each point in the column some...