Question: A feed stream containing 0.15% propane, 55% butane and the remainder pentane is to be fed to a distillation tower at 100 kmol/min. The distillate

A feed stream containing 0.15% propane, 55% butane and the remainder pentane is to be fed to a distillation tower at 100 kmol/min. The distillate stream is to exit the top of the colum witht he following composition: 30% propane, 69% butane and 1.0% pentane. We want to recover 99% of the propane in the feed.

a) Draw and label a flow chart to describe the process

b) do a degree of freedom analysis for this problem

c) solve the material balance: determine the flow rate and composition of all the streams

d) what fraction of pentane recovered in the bottoms?

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