Example 3.7: For the rectification in previous example, where a benzene-toluene feed is being distilled to give a distillate composition of xd =0.95 and a bottoms composition of xw = 0.10, calculate the following graphically and analytically. (a) Minimum reflux ratio Rm, (b) Minimum number of theoretical plates at total reflux. 1.0 XA Ул q line 0.8 enriching operating line for Rm 1.000 1.000 !1 0.6 0.780 0.900 steps for total reflux 0.581 0.777 0.4 0.411 0.632 0.2- 0.258 0.456 0.130 0.261 1.0 0 0 Mole fraction in vapor, y 00 XW 0.2 0.6 0.8 xp x Mole fraction in liquid, x 0.4 xp
Example 3.7: For the rectification in previous example, where a benzene-toluene feed is being distilled to give a distillate composition of xd =0.95 and a bottoms composition of xw = 0.10, calculate the following graphically and analytically. (a) Minimum reflux ratio Rm, (b) Minimum number of theoretical plates at total reflux. 1.0 XA Ул q line 0.8 enriching operating line for Rm 1.000 1.000 !1 0.6 0.780 0.900 steps for total reflux 0.581 0.777 0.4 0.411 0.632 0.2- 0.258 0.456 0.130 0.261 1.0 0 0 Mole fraction in vapor, y 00 XW 0.2 0.6 0.8 xp x Mole fraction in liquid, x 0.4 xp
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:Example 3.7: For the rectification in previous example, where a benzene-toluene feed is being
distilled to give a distillate composition of xd =0.95 and a bottoms composition of xw = 0.10,
calculate the following graphically and analytically.
(a) Minimum reflux ratio Rm,
(b) Minimum number of theoretical plates at total reflux.
X₁
Y₁
q line-
0.8
enriching operating
line for Rm
1.000
1.000
11
0.6
0.780
0.900
steps for
total reflux
0.581
0.777
0.4
0.411
0.632
0.2-
0.258
0.456
0.130
0.261
%0
0.2
0.6
0.8
1.0
"
XFx
0
0
Mole fraction in liquid, x
Mole fraction in vapor, y
XW
0.4
XD
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