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5. The Haber process to manufacture ammonia is shown in the diagram below. The following chemical reaction takes place in the reactor: 3H₂ + N₂ → 2NH3 Given the following information (process is at steady state): The fresh feed has a flow rate of 100 mol/s, and contains 75.16% H₂, 24.57% N₂, and 0.27% Argon (Ar), given in molar units The liquid stream leaving the condenser contains only NH3. The gas stream leaving the condenser contains only H2, N2, and Argon. This stream is 80.0% H₂. 10% of this gas stream is purged. The remainder is recycled, where it is combined with the fresh feed.. a) Label each stream, with a variable name for the molar flow rate of each species in the stream. Each variable should have units of mol/s. Start by using the variable names given on the diagram. b) Write the degree of freedom for the overall system, the mixing point, the reactor, subsystem A, using either approach. c) Calculate the flow rates of each species in each stream, and write result on the schematic. Show your work. d) Explain why the purge stream was needed for this process.

5. The Haber process to manufacture ammonia is shown in the diagram below. The following chemical reaction takes place in the reactor: 3H₂ + N₂ → 2NH3 Given the following information (process is at steady state): The fresh feed has a flow rate of 100 mol/s, and contains 75.16% H₂, 24.57% N₂, and 0.27% Argon (Ar), given in molar units The liquid stream leaving the condenser contains only NH3. The gas stream leaving the condenser contains only H2, N2, and Argon. This stream is 80.0% H₂. 10% of this gas stream is purged. The remainder is recycled, where it is combined with the fresh feed.. a) Label each stream, with a variable name for the molar flow rate of each species in the stream. Each variable should have units of mol/s. Start by using the variable names given on the diagram. b) Write the degree of freedom for the overall system, the mixing point, the reactor, subsystem A, using either approach. c) Calculate the flow rates of each species in each stream, and write result on the schematic. Show your work. d) Explain why the purge stream was needed for this process.

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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ܕܒ 1 100 mol/s recycle reactor n₁ mol/s H₂ n₂ mol/s N₂ I na mol/s Ar I n4 mol/s NH3 | Subsystem A gas condenser liquid purge
Transcribed Image Text:ܕܒ 1 100 mol/s recycle reactor n₁ mol/s H₂ n₂ mol/s N₂ I na mol/s Ar I n4 mol/s NH3 | Subsystem A gas condenser liquid purge
5. The Haber process to manufacture ammonia is shown in the diagram below. The following chemical reaction takes place in the reactor: 3H₂ + N₂ → 2NH3 Given the following information (process is at steady state): The fresh feed has a flow rate of 100 mol/s, and contains 75.16% H2, 24.57% N2, and 0.27% Argon (Ar), given in molar units The liquid stream leaving the condenser contains only NH3. The gas stream leaving the condenser contains only H2, N2, and Argon. This stream is 80.0% H₂. 10% of this gas stream is purged. The remainder is recycled, where it is combined with the fresh feed.. a) Label each stream, with a variable name for the molar flow rate of each species in the stream. Each variable should have units of mol/s. Start by using the variable names given on the diagram. b) Write the degree of freedom for the overall system, the mixing point, the reactor, subsystem A, using either approach. c) Calculate the flow rates of each species in each stream, and write result on the schematic. Show your work. d) Explain why the purge stream was needed for this process.
Transcribed Image Text:5. The Haber process to manufacture ammonia is shown in the diagram below. The following chemical reaction takes place in the reactor: 3H₂ + N₂ → 2NH3 Given the following information (process is at steady state): The fresh feed has a flow rate of 100 mol/s, and contains 75.16% H2, 24.57% N2, and 0.27% Argon (Ar), given in molar units The liquid stream leaving the condenser contains only NH3. The gas stream leaving the condenser contains only H2, N2, and Argon. This stream is 80.0% H₂. 10% of this gas stream is purged. The remainder is recycled, where it is combined with the fresh feed.. a) Label each stream, with a variable name for the molar flow rate of each species in the stream. Each variable should have units of mol/s. Start by using the variable names given on the diagram. b) Write the degree of freedom for the overall system, the mixing point, the reactor, subsystem A, using either approach. c) Calculate the flow rates of each species in each stream, and write result on the schematic. Show your work. d) Explain why the purge stream was needed for this process.
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