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100 mols per second of ammonia (NH3) is burned with 20% excess O2 based on fresh ammonia feed) according to the following reaction: 4 NH3 + 5 O2 → 4 NO + 6 H₂O The reaction is 80% complete. The NH3 is separated and recycled as shown in the figure below:

100 mols per second of ammonia (NH3) is burned with 20% excess O2 based on fresh ammonia feed) according to the following reaction: 4 NH3 + 5 O2 → 4 NO + 6 H₂O The reaction is 80% complete. The NH3 is separated and recycled as shown in the figure below:

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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100 mols per second of ammonia (NH3) is burned with 20% excess O₂ (based on fresh ammonia feed) according to the following reaction: 4 NH3 + 5 O2 → 4 NO + 6 H₂O The reaction is 80% complete. The NH3 is separated and recycled as shown in the figure below: ń10 (mol NH3/s) 100 mol NH3/sn₁ (mol NH3/s) n₂ (mol O₂/s) Reactor ń3 (mol NH3/s) n4 (mol O₂/s) ń5 (mol NO/s) no (mol H₂O/s) Separator ń, (mol O₂/s) ng (mol NO/s) ng (mol H₂O/s) a) Do the degree of freedom analysis on the reactor, separator, mixing point and overall process. b) Calculate the molar flow rate for fresh O₂ and product stream. c) Calculate the molar flow rate for NH3 fed to the reactor. d) Calculate the overall process fractional conversion. e) Calculate the ratio of recycled stream to fresh NH3 fed. (Use Extent of Reaction Balance when needed)
Transcribed Image Text:100 mols per second of ammonia (NH3) is burned with 20% excess O₂ (based on fresh ammonia feed) according to the following reaction: 4 NH3 + 5 O2 → 4 NO + 6 H₂O The reaction is 80% complete. The NH3 is separated and recycled as shown in the figure below: ń10 (mol NH3/s) 100 mol NH3/sn₁ (mol NH3/s) n₂ (mol O₂/s) Reactor ń3 (mol NH3/s) n4 (mol O₂/s) ń5 (mol NO/s) no (mol H₂O/s) Separator ń, (mol O₂/s) ng (mol NO/s) ng (mol H₂O/s) a) Do the degree of freedom analysis on the reactor, separator, mixing point and overall process. b) Calculate the molar flow rate for fresh O₂ and product stream. c) Calculate the molar flow rate for NH3 fed to the reactor. d) Calculate the overall process fractional conversion. e) Calculate the ratio of recycled stream to fresh NH3 fed. (Use Extent of Reaction Balance when needed)
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