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4) A packed distillation column is used to separate methanol from water. At an intermediate height within the packed column, the mole fraction of methanol in the bulk of the vapour is 0.6 and the mole fraction of methanol in the bulk of the liquid is 0.4. Using the xy diagram overleaf, determine the molar flux of methanol from liquid to vapour at this vertical position in the column, given the film mass transfer coefficients, KG-0.1 mol m² s1 and KL=0.05 mol m-² s-¹.

4) A packed distillation column is used to separate methanol from water. At an intermediate height within the packed column, the mole fraction of methanol in the bulk of the vapour is 0.6 and the mole fraction of methanol in the bulk of the liquid is 0.4. Using the xy diagram overleaf, determine the molar flux of methanol from liquid to vapour at this vertical position in the column, given the film mass transfer coefficients, KG-0.1 mol m² s1 and KL=0.05 mol m-² s-¹.

Introduction to Chemical Engineering Thermodynamics
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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feedback to help with ques: Q4. Again, we know that the molar flux to and from the interface must be equal (no accumulation), and that there is equilibrium at the interface. Knowing the bulk mole fractions and film mass transfer coefficients allows us to solve for the other unknowns, including the compositions of vapour and liquid at the interface, y* and x*. A graphical approach is required since we are given the equilibrium line as a plot. ans Q4 XA *=0.28; yA *=0.67; NA=0.006 mol m-2 s-1 ans 4) A packed distillation column is used to separate methanol from water. At an intermediate height within the packed column, the mole fraction of methanol in the bulk of the vapour is 0.6 and the mole fraction of methanol in the bulk of the liquid is 0.4. Using the xy diagram overleaf, determine the molar flux of methanol from liquid to vapour at this vertical position in the column, given the film mass transfer coefficients, KG=0.1 mol m² s-1 and kL=0.05 mol m-² s-¹.
Transcribed Image Text:feedback to help with ques: Q4. Again, we know that the molar flux to and from the interface must be equal (no accumulation), and that there is equilibrium at the interface. Knowing the bulk mole fractions and film mass transfer coefficients allows us to solve for the other unknowns, including the compositions of vapour and liquid at the interface, y* and x*. A graphical approach is required since we are given the equilibrium line as a plot. ans Q4 XA *=0.28; yA *=0.67; NA=0.006 mol m-2 s-1 ans 4) A packed distillation column is used to separate methanol from water. At an intermediate height within the packed column, the mole fraction of methanol in the bulk of the vapour is 0.6 and the mole fraction of methanol in the bulk of the liquid is 0.4. Using the xy diagram overleaf, determine the molar flux of methanol from liquid to vapour at this vertical position in the column, given the film mass transfer coefficients, KG=0.1 mol m² s-1 and kL=0.05 mol m-² s-¹.
Plot for Q4) Ym (molefraction of methanol in vapour) 0.8 0.6 0.4 0.2 0 x-y diagram for methanol/water at 1 atm 0.2 0.4 Xm (molefraction of methanol in liquid) 0.6 0.8 1
Transcribed Image Text:Plot for Q4) Ym (molefraction of methanol in vapour) 0.8 0.6 0.4 0.2 0 x-y diagram for methanol/water at 1 atm 0.2 0.4 Xm (molefraction of methanol in liquid) 0.6 0.8 1
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