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Absorption: Contaminant in a Gas Effluent We are going to absorb 90% of a contaminant in a gas stream containing 15.0 mole of the contaminant by absorntion into a water phase. The total inlet gas flow to the absorption column is 100.0 kgmole/hr and the total water flow is 200 kgmole/hr. Inlet water is NOT pure but contains 0.5% of the contaminant. I he process operates isothermally at 300k and a pressure of 1 atm. The equilibrium for this system is effectively characterized by either a Henry's Law relationship or Raoult's Law (using partial pressure), a general equilibrium relationship that can be used is ya=1.60*xa. plot the operating line and determine the minimum number of stages (graphically) for the equilibrium relationship provided. Confirm the results of part (a) using the analytical Kremser equation.

Absorption: Contaminant in a Gas Effluent We are going to absorb 90% of a contaminant in a gas stream containing 15.0 mole of the contaminant by absorntion into a water phase. The total inlet gas flow to the absorption column is 100.0 kgmole/hr and the total water flow is 200 kgmole/hr. Inlet water is NOT pure but contains 0.5% of the contaminant. I he process operates isothermally at 300k and a pressure of 1 atm. The equilibrium for this system is effectively characterized by either a Henry's Law relationship or Raoult's Law (using partial pressure), a general equilibrium relationship that can be used is ya=1.60*xa. plot the operating line and determine the minimum number of stages (graphically) for the equilibrium relationship provided. Confirm the results of part (a) using the analytical Kremser equation.

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
Problem 1.1P
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Absorption: Contaminant in a Gas Effluent

We are going to absorb 90% of a contaminant in a gas stream containing 15.0 mole of the contaminant by absorntion into a water phase. The total inlet gas flow to the absorption column is 100.0 kgmole/hr and the total water flow is 200 kgmole/hr. Inlet water is NOT pure but contains 0.5% of the contaminant. I he process operates isothermally at 300k and a pressure of 1 atm. The equilibrium for this system is effectively characterized by either a Henry's Law relationship or Raoult's Law (using partial pressure), a general equilibrium relationship that can be used is ya=1.60*xa.

  1. plot the operating line and determine the minimum number of stages (graphically) for the equilibrium relationship provided.
  2. Confirm the results of part (a) using the analytical Kremser equation.
Expert Solution
Step 1: Given data

Mole of contaminant = 15 mole

Total inlet gas flow rate =100 Kgmol/hr

Total water flow rate = 200 Kgmol/hr

Mol percent of contaminant in inlet water = 0.5% 

Temperature of the system = 300 K 

Pressure of the system = 1 atm 

General equilibrium relationship is y subscript A equals 1.6 x subscript A


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