given in table below. Calculate the kg moles per hour distillate, kg moles per hour bottoms, and the number of theoretical trays needed.

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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Example 3.5: A liquid mixture of benzene-toluene is to be distilled in a fractionating tower at
101.3 kPa pressure. The feed of 100 kg mol/h is liquid and it contains 45 mol % benzene and 55
mol % toluene and enters at 327.6 K. A distillate containing 95 mol % benzene and 5 mol %
toluene and a bottoms containing 10 mol % benzene and 90 mol % toluene are to be obtained. The
reflux ratio is 4:1. The average heat capacity of the feed is 159 . kJ/kg mol.K , the boiling point of
the feed is 93°C and the average latent heat 32099 kJ/kg mol . Equilibrium data for this system are
given in table below. Calculate the kg moles per hour distillate, kg moles per hour bottoms, and
the number of theoretical trays needed.
YA
1.000
0.900
1.000
0.780
0.581
0.777
0.411
0.632
0.258
0.456
0.130
0.261
Transcribed Image Text:Example 3.5: A liquid mixture of benzene-toluene is to be distilled in a fractionating tower at 101.3 kPa pressure. The feed of 100 kg mol/h is liquid and it contains 45 mol % benzene and 55 mol % toluene and enters at 327.6 K. A distillate containing 95 mol % benzene and 5 mol % toluene and a bottoms containing 10 mol % benzene and 90 mol % toluene are to be obtained. The reflux ratio is 4:1. The average heat capacity of the feed is 159 . kJ/kg mol.K , the boiling point of the feed is 93°C and the average latent heat 32099 kJ/kg mol . Equilibrium data for this system are given in table below. Calculate the kg moles per hour distillate, kg moles per hour bottoms, and the number of theoretical trays needed. YA 1.000 0.900 1.000 0.780 0.581 0.777 0.411 0.632 0.258 0.456 0.130 0.261
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