At a point in an ammonia absorber at 101.3 kPa and 20oC, using water as the absorbent, the bulk gas phase contains 10 vol% NH3. At the interface, the partial pressure of NH3 is 2.26 kPa. Ammonia concentration in the body of the liquid is 1 wt%. The rate of ammonia absorption at this point is 0.05 kmol/h-m2. (a) Given this information and the equilibrium curve in Figure , calculate X, Y, YI, XI,X*, Y*, KY, KX, kY, and kX. (b) What percent of the mass-transfer resistance is in each phase? (c) Verify for these data that1/KY = 1/kY + H,/kX. 0.14х, Y0.12Y, X1Y, X*0.100.08Equilibriumcurve0.06| Y1, X1|X, Y¡ |0.040.02-X, Y*0.02 0.04 0.06 0.08 0.10 0.12Moles NH3/mole H20, XMoles NH3/mole air, Y

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Answered: 0.14 х, Y 0.12 Y, X1 Y, X* 0.10 0.08…

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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At a point in an ammonia absorber at 101.3 kPa and 20^oC, using water as the absorbent, the bulk gas phase contains 10 vol% NH₃. At the interface, the partial pressure of NH₃ is 2.26 kPa. Ammonia concentration in the body of the liquid is 1 wt%. The rate of ammonia absorption at this point is 0.05 kmol/h-m². (a) Given this information and the equilibrium curve in Figure , calculate X, Y, Y_I, X_I,X*, Y*, K_Y, K_X, k_Y, and k_X. (b) What percent of the mass-transfer resistance is in each phase? (c) Verify for these data that1/K_Y = 1/k_Y + H^,/k_X.

0.14
х, Y
0.12
Y, X1
Y, X*
0.10
0.08
Equilibrium
curve
0.06
| Y1, X1
|X, Y¡ |
0.04
0.02
-X, Y*
0.02 0.04 0.06 0.08 0.10 0.12
Moles NH3/mole H20, X
Moles NH3/mole air, Y

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