A tray tower to be designed to absorb SO2 from an air stream by pure water at 293 K. The entering gas contains 20 mol% and leaving 2 mol% at total pressure of 101.3 kPa. The inert air flow is 150 kg air /hr and the entering water flow is 6000kg water/hr. Assume the efficiency of 50% ,how many theoretical and actual trays needed .What are the environmental risks of SO2

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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A tray tower to be designed to absorb SO2 from an air stream by pure water at 293 K. The entering gas contains 20 mol% and leaving 2 mol% at total pressure of 101.3 kPa. The inert air flow is 150 kg air /hr and the entering water flow is 6000kg water/hr. Assume the efficiency of 50% ,how many theoretical and actual trays needed .What are the environmental risks of SO2
Mole Fraction
SO₂ in Liquid, x₁
0
0.0000562
0.0001403
0.000280
0.000422
0.000564
0.000842
0.001403
0.001965
0.00279
0.00420
0.00698
0.01385
0.0206
0.0273
Partial Pressure of SO₂
in Vapor, p (mm Hg)
20°C (293 K)
0
0.5
1.2
3.2
5.8
8.5
14.1
26.0
39.0
59
92
161
336
517
698
30°C (303 K)
0
0.6
1.7
4.7
8.1
11.8
19.7
36
52
79
125
216
452
688
Mole Fraction SO₂
in Vapor, y; P = 1 Atm
20°C
30°C
0
0.000658
0.00158
0.00421
0.00763
0.01120
0.01855
0.0342
0.0513
0.0775
0.121
0.212
0.443
0.682
0.917
0
0.000790
0.00223
0.00619
0.01065
0.0155
0.0259
0.0473
0.0685
0.1040
0.1645
0.284
0.594
0.905
Transcribed Image Text:Mole Fraction SO₂ in Liquid, x₁ 0 0.0000562 0.0001403 0.000280 0.000422 0.000564 0.000842 0.001403 0.001965 0.00279 0.00420 0.00698 0.01385 0.0206 0.0273 Partial Pressure of SO₂ in Vapor, p (mm Hg) 20°C (293 K) 0 0.5 1.2 3.2 5.8 8.5 14.1 26.0 39.0 59 92 161 336 517 698 30°C (303 K) 0 0.6 1.7 4.7 8.1 11.8 19.7 36 52 79 125 216 452 688 Mole Fraction SO₂ in Vapor, y; P = 1 Atm 20°C 30°C 0 0.000658 0.00158 0.00421 0.00763 0.01120 0.01855 0.0342 0.0513 0.0775 0.121 0.212 0.443 0.682 0.917 0 0.000790 0.00223 0.00619 0.01065 0.0155 0.0259 0.0473 0.0685 0.1040 0.1645 0.284 0.594 0.905
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