A solute is absorbed from a vapor stream mixture using a non-volatile liquid. The entering vapor is 2.5 mole % solute, and the entering liquid is solute-free. The solute present in the vapor is 92% absorbed and the concentration of the liquor at the bottom of the tower contains 1.36 mole % solute. Assuming an overall vapor stream flow rate of 60 moles/hr the equilibrium and operating lines for a counter-current separation have already been graphed (This figure is provided for your use / consideration). 0.0300 y, mole fraction 0.0250 0.0200 0.0150 0.0100 0.0050 0.0000 0.0000 0.0050 0.0100 0.0150 0.0200 0.0250 0.0300 x, mole fraction Based on the information available a basic and any calculations deemed necessary: 1. What is the minimum number of equilibrium stages necessary to achieve the desired separation? (Based on a graphical solution) 2. What is the inlet liquid flowrate for this column (the operation shown; moles/hour)? 3. What is your estimate for the thermodynamic partition coefficient that describes the solute equilibrium in this system? Be clear in your math/explanation.
A solute is absorbed from a vapor stream mixture using a non-volatile liquid. The entering vapor is 2.5 mole % solute, and the entering liquid is solute-free. The solute present in the vapor is 92% absorbed and the concentration of the liquor at the bottom of the tower contains 1.36 mole % solute. Assuming an overall vapor stream flow rate of 60 moles/hr the equilibrium and operating lines for a counter-current separation have already been graphed (This figure is provided for your use / consideration). 0.0300 y, mole fraction 0.0250 0.0200 0.0150 0.0100 0.0050 0.0000 0.0000 0.0050 0.0100 0.0150 0.0200 0.0250 0.0300 x, mole fraction Based on the information available a basic and any calculations deemed necessary: 1. What is the minimum number of equilibrium stages necessary to achieve the desired separation? (Based on a graphical solution) 2. What is the inlet liquid flowrate for this column (the operation shown; moles/hour)? 3. What is your estimate for the thermodynamic partition coefficient that describes the solute equilibrium in this system? Be clear in your math/explanation.
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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A solute is absorbed from a vapor stream mixture using a non-volatile liquid. The entering vapor is 2.5 mole% solute, and the entering liquid is solute-free. The solute
present in the vapor is 92% absorbed and the concentration of the liquor at the bottom of the tower contains 1.36 mole% solute. Assuming an overall vapor stream flow
rate of 60 moles/hr the equilibrium and operating lines for a counter-current separation have already been graphed (This figure is provided for your use / consideration).
0.0300
0.0250
0.0200
0.0150
0.0100
0.0050
0.0000
0.0000
0.0050
0.0100
0.0250
0.0300
0.0150
0.0200
x, mole fraction
Based on the information available a basic and any calculations deemed necessary:
1. What is the minimum number of equilibrium stages necessary to achieve the desired separation? (Based on a graphical solution)
2. What is the inlet liquid flowrate for this column (the operation shown; moles/hour)?
3. What is your estimate for the thermodynamic partition coefficient that describes the solute equilibrium in this system? Be clear in your math/explanation.
4. What is your estimate for the absorption factor, A for this system?
5. What is the Kremser estimate of the number of stages (answer with four significant figures, e.g. X.XXX or XX.XX)
N
W
P
X
y, mole fraction
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