Answered: A process consists of two distillation…

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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Question

A process consists of two distillation columns. The composition of the feed to
the first tower is 30.0 mol% benzene (B), 30.0 mol% toluene (T), and 40.0 mol%
xylene (X). The overhead stream from the first tower contains no xylene (X). The
benzene content of the overhead stream from the first tower is 55.0 mol%. The
bottoms stream from the second tower has a flow rate of 100 mol/h and contains
15.0 mol% toluene and no benzene. While the overhead stream from the second
tower contains 50.0 mol% benzene, there are also other components, T or X, or
both, in this stream. The flow rate of the overhead stream from the first tower
is twice the flow rate of the overhead stream from the second tower. Determine
the molar flow rates of the fresh feed stream and the overhead stream leaving
the first column.

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