A distillation column with a total condenser is separating a mixture that is 20 mole% ethanol and 80 mole% water. The feed is saturated liquid. Feed flow rate is 100kmoles/hr. Reflux is returned as saturated liquid. Desired distillate composition is 80 mole% ethanol and desired bottoms composition is 2 mole % ethanol. Instead of using a reboiler, a saturated vapor stream (S) of 4% ethanol in water is fed directly into the bottom of the column. Constant molal overflow is assumed. Plot the feed line in the McCabe Thiele diagram provided.Calculate the minimum reflux ratio. Xyy10095.51.9170.0190.17897.2138.910.07210.38910.986.79.6643.750.09660.43750.885.312.3847.040.12380.47040.784.116.6150.890.16610.508982.723.7754.450.23770.54450.682.326.0855.80.26080.5580.581.532.7358.260.32730.58260.480.739.6561.220.39650.612279.850.7965.640.50790.65640.379.751.9865.990.51980.65990.279.357.3268.410.57320.68410.178.7467.6373.850.67630.738578.4174.7278.150.74720.78150.20.40.60.878.1589.4389.430.89430.894378.31001001.1.

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Answered: A distillation column with a total…

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

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Problem 1.1P

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A distillation column with a total condenser is separating a mixture that is 20 mole% ethanol and 80 mole% water. The feed is saturated liquid. Feed flow rate is 100kmoles/hr. Reflux is returned as saturated liquid. Desired distillate composition is 80 mole% ethanol and desired bottoms composition is 2 mole % ethanol. Instead of using a reboiler, a saturated vapor stream (S) of 4% ethanol in water is fed directly into the bottom of the column. Constant molal overflow is assumed.

Plot the feed line in the McCabe Thiele diagram provided.
Calculate the minimum reflux ratio.

X
y
y
100
95.5
1.9
17
0.019
0.17
89
7.21
38.91
0.0721
0.3891
0.9
86.7
9.66
43.75
0.0966
0.4375
0.8
85.3
12.38
47.04
0.1238
0.4704
0.7
84.1
16.61
50.89
0.1661
0.5089
82.7
23.77
54.45
0.2377
0.5445
0.6
82.3
26.08
55.8
0.2608
0.558
0.5
81.5
32.73
58.26
0.3273
0.5826
0.4
80.7
39.65
61.22
0.3965
0.6122
79.8
50.79
65.64
0.5079
0.6564
0.3
79.7
51.98
65.99
0.5198
0.6599
0.2
79.3
57.32
68.41
0.5732
0.6841
0.1
78.74
67.63
73.85
0.6763
0.7385
78.41
74.72
78.15
0.7472
0.7815
0.2
0.4
0.6
0.8
78.15
89.43
89.43
0.8943
0.8943
78.3
100
100
1.
1.

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