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A continuous distillation column receives a saturated liquid feed (xr= 0.45). It produces a distillate of xp = 0.98 and a bottom product of xw = 0.015. A side stream amounting to 25% of the downflowing liquid (xs = 0.75) is withdrawn as a saturated liquid from the appropriate tray. The rectifying section operating line for the part of the column above the point of side stream withdrawal is Yn+1 = 0.821xn + 0.175. Determine the equations of the operating lines for the middle and the last sections of the column. What fraction of the feed is drawn as the bottom product?

A continuous distillation column receives a saturated liquid feed (xr= 0.45). It produces a distillate of xp = 0.98 and a bottom product of xw = 0.015. A side stream amounting to 25% of the downflowing liquid (xs = 0.75) is withdrawn as a saturated liquid from the appropriate tray. The rectifying section operating line for the part of the column above the point of side stream withdrawal is Yn+1 = 0.821xn + 0.175. Determine the equations of the operating lines for the middle and the last sections of the column. What fraction of the feed is drawn as the bottom product?

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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A continuous distillation column receives a saturated liquid feed (xr= 0.45). It produces a distillate of xp = 0.98 and a bottom product of xw = 0.015. A side stream amounting to 25% of the downflowing liquid (xs = 0.75) is withdrawn as a saturated liquid from the appropriate tray. The rectifying section operating line for the part of the column above the point of side stream withdrawal is Yn+1 = 0.821xn + 0.175. Determine the equations of the operating lines for the middle and the last sections of the column. What fraction of the feed is drawn as the bottom product?
Transcribed Image Text:A continuous distillation column receives a saturated liquid feed (xr= 0.45). It produces a distillate of xp = 0.98 and a bottom product of xw = 0.015. A side stream amounting to 25% of the downflowing liquid (xs = 0.75) is withdrawn as a saturated liquid from the appropriate tray. The rectifying section operating line for the part of the column above the point of side stream withdrawal is Yn+1 = 0.821xn + 0.175. Determine the equations of the operating lines for the middle and the last sections of the column. What fraction of the feed is drawn as the bottom product?
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