Answered: A feed stream of 1005 kg mol/h contains…

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 feed stream of 1005 kg mol/h contains 62% mixture of benzene and toluene at 18.5 oC. enters an
evaporation unit.
The vapour stream from the top of the evapoator contains 99 %mol benzene at 91
oC and the liquid
stream from the bottom contains 100 % mol at 90 oC.
The boiling point of benzene at atmospheric pressure is 80 oC and the latent heat of vaporization of
benzene at its normal boiling point is 309 KJ/kg .
The boiling point of Toluene at atomospheric pressure is 110 oC and the latent heat of vaporization of
Toluene at its normal boiling point is 351 KJ/kg
Note:
The specific heat (Cp) of Benzene;
1. liquid = 1.82 kJ/kg kJ/(kgmol.K)
2. Vapor = 1.07 kJ/kg kJ/(kgmol.K)
The specific heat (Cp) of Toluene;
1. liquid = 1.7 kJ/(kgmol.K)
2. Vapor = 1.13 kJ/(kgmol.K

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