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product of 95.3 mole per cent phenol. The compositions of the top product and of the phenol in the bottoms are: Compositions (mole per cent) Feed Top Bottom 95.3 phenol o-cresol 35 5.24 15 4.55 m-cresol 30 0.15 xylenols 20 -

product of 95.3 mole per cent phenol. The compositions of the top product and of the phenol in the bottoms are: Compositions (mole per cent) Feed Top Bottom 95.3 phenol o-cresol 35 5.24 15 4.55 m-cresol 30 0.15 xylenols 20 -

Introduction to Chemical Engineering Thermodynamics
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
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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A liquor consisting of phenol and cresols with some xylenols is fractionated to give a top product of 95.3 mole per cent phenol. The compositions of the top product and of the phenol in the bottoms are: Compositions (mole per cent) Feed Top Bottom 35 95.3 5.24 phenol 0-cresol 4.55 0.15 15 m-cresol 30 xylenols 20 100 100 If a reflux ratio of 10 is used, (a) Complete the material balance over the still for a feed of 100 kmol. (b) Calculate the composition on the second plate from the top. (c) Calculate the composition on the second plate from the bottom. (d) Calculate the minimum reflux ratio by Underwood's equation and by Colburn's approximation. The heavy key is m-cresol and the light key is phenol.
Transcribed Image Text:A liquor consisting of phenol and cresols with some xylenols is fractionated to give a top product of 95.3 mole per cent phenol. The compositions of the top product and of the phenol in the bottoms are: Compositions (mole per cent) Feed Top Bottom 35 95.3 5.24 phenol 0-cresol 4.55 0.15 15 m-cresol 30 xylenols 20 100 100 If a reflux ratio of 10 is used, (a) Complete the material balance over the still for a feed of 100 kmol. (b) Calculate the composition on the second plate from the top. (c) Calculate the composition on the second plate from the bottom. (d) Calculate the minimum reflux ratio by Underwood's equation and by Colburn's approximation. The heavy key is m-cresol and the light key is phenol.
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