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A multistage counter-current absorber is designed to recover solute A from a nitrogen gas stream. The inlet gas stream has a flow rate and a solute concentration of 157 kmol/h and 0.94 mol %, respectively. It is desired to reduce the solute concentration of outlet gas stream to 0.07 mol%. A pure liquid solvent stream with an inlet flow rate of 447 kmol/h is used to absorb solute A. This operation is performed at 313 K and 1.5 bar, while the equilibrium relation of solute A in gas-liquid is y₁= 1.96xĄ. a) Determine the total exit liquid flow (Lv), the total exit gas flow (V₁), and the solute concentration in exit liquid (XAN). [ 3] b) Estimate the number of theoretical stages needed in this absorber using the graphical

A multistage counter-current absorber is designed to recover solute A from a nitrogen gas stream. The inlet gas stream has a flow rate and a solute concentration of 157 kmol/h and 0.94 mol %, respectively. It is desired to reduce the solute concentration of outlet gas stream to 0.07 mol%. A pure liquid solvent stream with an inlet flow rate of 447 kmol/h is used to absorb solute A. This operation is performed at 313 K and 1.5 bar, while the equilibrium relation of solute A in gas-liquid is y₁= 1.96xĄ. a) Determine the total exit liquid flow (Lv), the total exit gas flow (V₁), and the solute concentration in exit liquid (XAN). [ 3] b) Estimate the number of theoretical stages needed in this absorber using the graphical

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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Appendix I Heat Transfer Heat transfer by conduction Flat wall: Q KA(T-T₂) Ar Plane walls in series: Q= Hollow cylinder: Q: Multilayer cylinders: Q Hollow sphere: Q kA(T₁-T₂)_k₂A(1 27Lk(T₁-T₂) In ri T₁-T₂ In 2/27Lk ₁ 4nk (T-T₂) ( 11 Heat transfer through convection Q=hA(T, -T.) Heat transfer through radiation Q=0&A(T-T²) o=5.676 × 10-8 W/(m²-K) T, In ¹3 121
Transcribed Image Text:Appendix I Heat Transfer Heat transfer by conduction Flat wall: Q KA(T-T₂) Ar Plane walls in series: Q= Hollow cylinder: Q: Multilayer cylinders: Q Hollow sphere: Q kA(T₁-T₂)_k₂A(1 27Lk(T₁-T₂) In ri T₁-T₂ In 2/27Lk ₁ 4nk (T-T₂) ( 11 Heat transfer through convection Q=hA(T, -T.) Heat transfer through radiation Q=0&A(T-T²) o=5.676 × 10-8 W/(m²-K) T, In ¹3 121
Question 1 A multistage counter-current absorber is designed to recover solute A from a nitrogen gas stream. The inlet gas stream has a flow rate and a solute concentration of 157 kmol/h and 0.94 mol %, respectively. It is desired to reduce the solute concentration of outlet gas stream to 0.07 mol %. A pure liquid solvent stream with an inlet flow rate of 447 kmol/h is used to absorb solute A. This operation is performed at 313 K and 1.5 bar, while the equilibrium relation of solute A in gas-liquid is y4 = 1.96x4. a) Determine the total exit liquid flow (LN), the total exit gas flow (V₁), and the solute concentration in exit liquid (xAN). [ b) Estimate the number of theoretical stages needed in this absorber using the graphical method.
Transcribed Image Text:Question 1 A multistage counter-current absorber is designed to recover solute A from a nitrogen gas stream. The inlet gas stream has a flow rate and a solute concentration of 157 kmol/h and 0.94 mol %, respectively. It is desired to reduce the solute concentration of outlet gas stream to 0.07 mol %. A pure liquid solvent stream with an inlet flow rate of 447 kmol/h is used to absorb solute A. This operation is performed at 313 K and 1.5 bar, while the equilibrium relation of solute A in gas-liquid is y4 = 1.96x4. a) Determine the total exit liquid flow (LN), the total exit gas flow (V₁), and the solute concentration in exit liquid (xAN). [ b) Estimate the number of theoretical stages needed in this absorber using the graphical method.
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