Benzene is to be absorbed from coal gas by means of a wash-oil. The inlet gas contains 3 per cent by volume of benzene, and the exit gas should not contain more than 0.02 per cent benzene by volume. The suggested oil circulation rate is 480 kg oil/100 m³ of inlet gas measured at 273 K and 101.3 kN/m². The wash oil enters the tower solute-free. If the overall height of a transfer unit based on the gas phase is 1.4 m, determine the minimum height of the tower which is required to carry out the absorption. The equilibrium data are: Benzene in oil (per cent by mass) Equilibrium partial pressure of benzene in gas (kN/m²) 0.05 0.013 0.01 0.033 0.50 0.20 1.0 0.53 2.0 1.33 3.0 3.33
Benzene is to be absorbed from coal gas by means of a wash-oil. The inlet gas contains 3 per cent by volume of benzene, and the exit gas should not contain more than 0.02 per cent benzene by volume. The suggested oil circulation rate is 480 kg oil/100 m³ of inlet gas measured at 273 K and 101.3 kN/m². The wash oil enters the tower solute-free. If the overall height of a transfer unit based on the gas phase is 1.4 m, determine the minimum height of the tower which is required to carry out the absorption. The equilibrium data are: Benzene in oil (per cent by mass) Equilibrium partial pressure of benzene in gas (kN/m²) 0.05 0.013 0.01 0.033 0.50 0.20 1.0 0.53 2.0 1.33 3.0 3.33
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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Transcribed Image Text:Benzene is to be absorbed from coal gas by means of a wash-oil. The inlet gas contains
3 per cent by volume of benzene, and the exit gas should not contain more than 0.02 per
cent benzene by volume. The suggested oil circulation rate is 480 kg oil/100 m³ of inlet
gas measured at 273 K and 101.3 kN/m². The wash oil enters the tower solute-free. If the
overall height of a transfer unit based on the gas phase is 1.4 m, determine the minimum
height of the tower which is required to carry out the absorption. The equilibrium data are:
Benzene in oil
(per cent by mass)
Equilibrium partial
pressure of
benzene in gas
(kN/m²)
0.05
0.013
0.01
0.033
0.50
0.20
1.0
0.53
2.0
1.33
3.0
3.33
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