1) A multi-stage tower is distilling a methanol-water mixture. Assuming that the pressure is constant at 1 atm throughout the tower, find the temperature difference (using the graph below) between the reboiler and the top plate if the mole-fractions of methanol in the liquid bottom-product and distillate are 0.1 and 0.9 respectively. Temperature (K) 375 370 365 360 355 350 345 340 335 0 Temperature-composition diagram for methanol/water at 1 atm 0.2 0.4 0.6 molefraction of methanol 0.8 1

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
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Q1): Tw~362 K; Tn~342 K

1) A multi-stage tower is distilling a methanol-water mixture. Assuming that the
pressure is constant at 1 atm throughout the tower, find the temperature difference
(using the graph below) between the reboiler and the top plate if the mole-fractions
of methanol in the liquid bottom-product and distillate are 0.1 and 0.9 respectively.
Temperature (K)
375
370
365
360
355
350
345
340
335
Temperature-composition diagram for methanol/water at 1 atm
0.2
0.4
0.6
molefraction of methanol
0.8
Transcribed Image Text:1) A multi-stage tower is distilling a methanol-water mixture. Assuming that the pressure is constant at 1 atm throughout the tower, find the temperature difference (using the graph below) between the reboiler and the top plate if the mole-fractions of methanol in the liquid bottom-product and distillate are 0.1 and 0.9 respectively. Temperature (K) 375 370 365 360 355 350 345 340 335 Temperature-composition diagram for methanol/water at 1 atm 0.2 0.4 0.6 molefraction of methanol 0.8
1) A multi-stage tower is distilling a methanol-water mixture. Assuming that the
pressure is constant at 1 atm throughout the tower, find the temperature difference
(using the graph below) between the reboiler and the top plate if the mole-fractions
of methanol in the liquid bottom-product and distillate are 0.1 and 0.9 respectively.
Temperature (K)
375
370
365
360
355
350
345
340
335
0
Temperature-composition diagram for methanol/water at 1 atm
0.2
0.4
0.6
molefraction of methanol
0.8
Transcribed Image Text:1) A multi-stage tower is distilling a methanol-water mixture. Assuming that the pressure is constant at 1 atm throughout the tower, find the temperature difference (using the graph below) between the reboiler and the top plate if the mole-fractions of methanol in the liquid bottom-product and distillate are 0.1 and 0.9 respectively. Temperature (K) 375 370 365 360 355 350 345 340 335 0 Temperature-composition diagram for methanol/water at 1 atm 0.2 0.4 0.6 molefraction of methanol 0.8
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