3. A mixture of 0.30 mole fraction benzene and the rest toluene is fed to a continuous distillation column to give an overhead product of 0.90 mole fraction benzene and a bottom product of 0.95 mole fraction toluene. The feed enters at 283 ? with a specific heat capacity (??)  of  1.84 ??/?? ? and a boiling point of  374.7 ?. The latent heat of vaporisation (λ) of the feed is 30 ??/????. If the reflux ratio is 5.0,   a.       How many theoretical plates are required? b.      How many actual plates are required assuming a plate efficiency of 80 percent?   (????????? = 78 ??/????    ;   ????????? = 92 ??/????)

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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3. A mixture of 0.30 mole fraction benzene and the rest toluene is fed to a continuous distillation column to give an overhead product of 0.90 mole fraction benzene and a bottom product of 0.95 mole fraction toluene. The feed enters at 283 ? with a specific heat capacity (??)  of  1.84 ??/?? ? and a boiling point of  374.7 ?. The latent heat of vaporisation (λ) of the feed is 30 ??/????. If the reflux ratio is 5.0,

 

a.       How many theoretical plates are required?

b.      How many actual plates are required assuming a plate efficiency of 80 percent?

 

(????????? = 78 ??/????    ;   ????????? = 92 ??/????) 

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