1800 m3/hr of gas mixture containing 14% NH3, 86% Air by mole shall be treated with water in a packed absorber at 1 atm and 15oC using #2 metal Rachig super ring packings. The gas leaving should contain only 3 mole% of ammonia. Assume that equilibrium for the system is given by y = 8.1 x, where x and y are mole fractions of NH3 in the liquid and gas, respectively. For water: density = 995 kg/m3 and vis= 0.8 cP | For the gas: density = 1.16 kg/m3. Answer the following questions:What is the expected percent recovery of ammonia?Determine the molar rate in kmol/hr of the gas entering.What is the mass rate of pure water (kg/hr) entering the column if it is supplied at a rate which is 1.8 times the minimum?

Given that, The volumetric flow rate of the gas mixture V = 1800 m3/hr The mole fraction of NH3 in…

Answered: 1800 m3/hr of gas mixture containing…

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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1800 m³/hr of gas mixture containing 14% NH₃, 86% Air by mole shall be treated with water in a packed absorber at 1 atm and 15^oC using #2 metal Rachig super ring packings. The gas leaving should contain only 3 mole% of ammonia. Assume that equilibrium for the system is given by y = 8.1 x, where x and y are mole fractions of NH₃ in the liquid and gas, respectively. For water: density = 995 kg/m³ and vis= 0.8 cP | For the gas: density = 1.16 kg/m³. Answer the following questions:

What is the expected percent recovery of ammonia?

Determine the molar rate in kmol/hr of the gas entering.

What is the mass rate of pure water (kg/hr) entering the column if it is supplied at a rate which is 1.8 times the minimum?

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