A tray tower is to be used to remove 99% of the ammonia from an entering air stream containing 6 mol% ammonia at 293 K and 101.3 kPa. The entering pure water flow rate is 188 kg/h.m? and the inert air flow is 128 kg/h.m?. Calculate the number of stages needed.
A tray tower is to be used to remove 99% of the ammonia from an entering air stream containing 6 mol% ammonia at 293 K and 101.3 kPa. The entering pure water flow rate is 188 kg/h.m? and the inert air flow is 128 kg/h.m?. Calculate the number of stages needed.
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:2) A tray tower is to be used to remove 99% of the ammonia from an entering air stream containing 6
mol% ammonia at 293 K and 101.3 kPa. The entering pure water flow rate is 188 kg/h.m? and the inert
air flow is 128 kg/h.m2.
Calculate the number of stages needed.
A.3-22 Equilibrium Data for Ammonia-Water System
Partial Pressure of NH,
in Vapor, p, (mm Hg)
Mole Fraction NH, in
Vapor, y; P = 1 Atm
Mole Fraction
NH, in Liquid, x,
20°C (293 K)
30°C (303 K)
20°C
30°C
0.0126
11.5
0.0151
0.0167
15.3
0.0201
0.0208
12
19.3
0.0158
0.0254
0.0258
15
24.4
0.0197
0.0321
0.0309
18.2
29.6
0.0239
0.0390
0.0405
24.9
40.1
0.0328
0.0527
0.0503
31.7
51.0
0.0416
0.0671
0.0737
50.0
79.7
0.0657
0.105
0.0960
69.6
110
0.0915
0.145
0.137
114
179
0.150
0.235
0.175
166
260
0.218
0.342
0.210
227
352
0.298
0.463
0.241
298
454
0.392
0.597
0.297
470
719
0.618
0.945
Source : J. H. Perry, Chemical Engineers' Handbook, 4th ed. New York: McGraw-Hill Book Company,
1963. With permission.
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