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A packed tower is to be designed for the absorption of 98% of the ammonia (A) from an air-ammonia mixture containing 4% ammonia at a rate of 4200 m/hr using water as the solvent. The tower operates at 105.1 kPa and 303 K. The equilibrium data for NH3-Water system at these conditions are given. Partial Pressure of NH3 (mmHg) 19.3 29.6 40.1 51.0 79.5 110 Kg NH3 per 100 kg water 3 4. 7.5 10 (a) Calculate and plot the equilibrium data a XA Vs PA and xA Vs YA. (b) Calculate the minimum liquid rate (Lmin) for the adsorption. (c) Assuming a liquid flowrate of 1.5 * Lmin determine the number of stages required.

A packed tower is to be designed for the absorption of 98% of the ammonia (A) from an air-ammonia mixture containing 4% ammonia at a rate of 4200 m/hr using water as the solvent. The tower operates at 105.1 kPa and 303 K. The equilibrium data for NH3-Water system at these conditions are given. Partial Pressure of NH3 (mmHg) 19.3 29.6 40.1 51.0 79.5 110 Kg NH3 per 100 kg water 3 4. 7.5 10 (a) Calculate and plot the equilibrium data a XA Vs PA and xA Vs YA. (b) Calculate the minimum liquid rate (Lmin) for the adsorption. (c) Assuming a liquid flowrate of 1.5 * Lmin determine the number of stages required.

Introduction to Chemical Engineering Thermodynamics
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
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Absorption #2 A packed tower is to be designed for the absorption of 98% of the ammonia (A) from an air-ammonia mixture containing 4% ammonia at a rate of 4200 m³/hr using water as the solvent. The tower operates at 105.1 kPa and 303 K. The equilibrium data for NH3-Water system at these conditions are given. Partial Pressure of NH3 (mmHg) 19.3 29.6 40.1 51.0 79.5 110 Kg NH3 per 100 kg water 2 4 7.5 10 (a) Calculate and plot the equilibrium data a XA Vs PA and XA VS YA. (b) Calculate the minimum liquid rate (Lmin) for the adsorption. (c) Assuming a liquid flowrate of 1.5 * Lmin determine the number of stages required.
Transcribed Image Text:Absorption #2 A packed tower is to be designed for the absorption of 98% of the ammonia (A) from an air-ammonia mixture containing 4% ammonia at a rate of 4200 m³/hr using water as the solvent. The tower operates at 105.1 kPa and 303 K. The equilibrium data for NH3-Water system at these conditions are given. Partial Pressure of NH3 (mmHg) 19.3 29.6 40.1 51.0 79.5 110 Kg NH3 per 100 kg water 2 4 7.5 10 (a) Calculate and plot the equilibrium data a XA Vs PA and XA VS YA. (b) Calculate the minimum liquid rate (Lmin) for the adsorption. (c) Assuming a liquid flowrate of 1.5 * Lmin determine the number of stages required.
Expert Solution
Step 1

Given that,

The volumetric flow rate of inlet air-ammonia mixture = 4200 m3h = 1.167 m3s

mol% of NH3 in inlet air-ammonia mixture y1 = 4% = 0.04

Pressure P = 105.1 kPa  = 788.31 mm Hg

Temperature T = 303 K

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