An ethanol-propanol solution containing 60 mole % of ethanol is to be separated in a plate rectification column at atmospheric pressure. The feed as a vapor-liquid mixture in 1:1 ratio is introduced to column at a flow rate of 200 kmol/h. It is suggested to operate the column at a reflux ratio 2 times its minimum value. The top product should contain 95% purity and the recovery of ethanol should be 98%. The column will be equipped with a total condenser and total reboiler. a) Draw schematically the column and label the currents and their compositions. b) Calculate the flow rates of top and bottom products. c) Calculate the composition of the bottom product. d) Write the equations of q-line, and enriching and stripping section operating lines. e) Find the number of ideal plates by using McCabe-Thiele Method. f) Calculate the condenser and reboiler loads (duties) as kW.
An ethanol-propanol solution containing 60 mole % of ethanol is to be separated in a plate rectification column at atmospheric pressure. The feed as a vapor-liquid mixture in 1:1 ratio is introduced to column at a flow rate of 200 kmol/h. It is suggested to operate the column at a reflux ratio 2 times its minimum value. The top product should contain 95% purity and the recovery of ethanol should be 98%. The column will be equipped with a total condenser and total reboiler. a) Draw schematically the column and label the currents and their compositions. b) Calculate the flow rates of top and bottom products. c) Calculate the composition of the bottom product. d) Write the equations of q-line, and enriching and stripping section operating lines. e) Find the number of ideal plates by using McCabe-Thiele Method. f) Calculate the condenser and reboiler loads (duties) as kW.
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:3) An ethanol-propanol solution containing 60 mole % of ethanol is to be separated in a plate
rectification column at atmospheric pressure. The feed as a vapor-liquid mixture in 1:1 ratio is
introduced to column at a flow rate of 200 kmol/h. It is suggested to operate the column at a
reflux ratio 2 times its minimum value. The top product should contain 95% purity and the
recovery of ethanol should be 98%. The column will be equipped with a total condenser and
total reboiler.
a) Draw schematically the column and label the currents and their compositions.
b) Calculate the flow rates of top and bottom products.
c) Calculate the composition of the bottom product.
d) Write the equations of q-line, and enriching and stripping section operating lines.
e) Find the number of ideal plates by using McCabe-Thiele Method.
f) Calculate the condenser and reboiler loads (duties) as kW.
Molar latent heat of vaporization at any composition of binary mixture is the same at 47 191
kJ/k-mol. The vapor-liquid equilibrium of the system at 760 mmHg is given in Fig. Q3.
1
0,9
0,8
0,7
0,6
0,5
0,4
0,3
0,2
0,1
0,1
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1
mole fraction of ethanol in liquid, x
Figure Q3. Equilibrium diagram of ethanol-propanol solution at 760 mmHg pressure.
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