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Q1. A gas stream contains nitrogen, hydrogen, and 0.2 mol% argon (Ar) as an impurity is fed to reactor (Fresh feed). Nitrogen and hydrogen are in stoichiometric proportion. If we do only recycling, then Ar concentration will build up and eventually shut down the reaction. To avoid this, we purge a portion of the recycle stream so that the level of Ar in the recycle stream is maintained at 7.0%. The reactor single pass fractional conversion is 0.25. Use atomic species balance to find the unknown. a) Based on the process description, draw, and label the flowchart of the process. : b) Perform a degree of freedom analysis of the overall process and all the sub-systems. Based on the proper degree of freedom analysis, state where to start the calculation. c) How much nitrogen is required to produce 245 kmol/h of ammonia? d) What are the flow rates of the recycle stream and purge stream?

Q1. A gas stream contains nitrogen, hydrogen, and 0.2 mol% argon (Ar) as an impurity is fed to reactor (Fresh feed). Nitrogen and hydrogen are in stoichiometric proportion. If we do only recycling, then Ar concentration will build up and eventually shut down the reaction. To avoid this, we purge a portion of the recycle stream so that the level of Ar in the recycle stream is maintained at 7.0%. The reactor single pass fractional conversion is 0.25. Use atomic species balance to find the unknown. a) Based on the process description, draw, and label the flowchart of the process. : b) Perform a degree of freedom analysis of the overall process and all the sub-systems. Based on the proper degree of freedom analysis, state where to start the calculation. c) How much nitrogen is required to produce 245 kmol/h of ammonia? d) What are the flow rates of the recycle stream and purge stream?

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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Q1. A gas stream contains nitrogen, hydrogen, and 0.2 mol% argon (Ar) as an impurity is fed to reactor (Fresh feed). Nitrogen and hydrogen are in stoichiometric proportion. If we do only recycling, then Ar concentration will build up and eventually shut down the reaction. To avoid this, we purge a portion of the recycle stream so that the level of Ar in the recycle stream is maintained at 7.0%. The reactor single pass fractional conversion is 0.25. Use atomic species balance to find the unknown. a) Based on the process description, draw, and label the flowchart of the process. : b) Perform a degree of freedom analysis of the overall process and all the sub-systems. Based on the proper degree of freedom analysis, state where to start the calculation. c) How much nitrogen is required to produce 245 kmol/h of ammonia? d) What are the flow rates of the recycle stream and purge stream?
Transcribed Image Text:Q1. A gas stream contains nitrogen, hydrogen, and 0.2 mol% argon (Ar) as an impurity is fed to reactor (Fresh feed). Nitrogen and hydrogen are in stoichiometric proportion. If we do only recycling, then Ar concentration will build up and eventually shut down the reaction. To avoid this, we purge a portion of the recycle stream so that the level of Ar in the recycle stream is maintained at 7.0%. The reactor single pass fractional conversion is 0.25. Use atomic species balance to find the unknown. a) Based on the process description, draw, and label the flowchart of the process. : b) Perform a degree of freedom analysis of the overall process and all the sub-systems. Based on the proper degree of freedom analysis, state where to start the calculation. c) How much nitrogen is required to produce 245 kmol/h of ammonia? d) What are the flow rates of the recycle stream and purge stream?
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