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Extream )s used to oxiidize CO to CO, at 100 atm absoute pressure in a steady-state process A stoichiometrie amoun of impure oxygen (98% mol O, and 2 mol N:) in the fresh feed rate must be s o chosen that the mole fraction of N; in the stream entering the reactor is 0,I. ). Calculate the flow rates and compositions of streams 1, 3, and 6. Choose as a basis of calculation one mole gas mixture in the stream entering the reactor (stream Preblem#: is removed completely by with reeycle and purge. condensation via a scparator placed after the reacto from the separator The CO, produced in the reactor No CO, O, or N. exits the bottom stream he single-pass conyersion in the reastor is specified to be 25%. The purge Steam 6 Steam 7 Steam 5 Steam 8 Steam 1 Steam 2 Steam 3 Reactor pure Oxygen Steam 4

Extream )s used to oxiidize CO to CO, at 100 atm absoute pressure in a steady-state process A stoichiometrie amoun of impure oxygen (98% mol O, and 2 mol N:) in the fresh feed rate must be s o chosen that the mole fraction of N; in the stream entering the reactor is 0,I. ). Calculate the flow rates and compositions of streams 1, 3, and 6. Choose as a basis of calculation one mole gas mixture in the stream entering the reactor (stream Preblem#: is removed completely by with reeycle and purge. condensation via a scparator placed after the reacto from the separator The CO, produced in the reactor No CO, O, or N. exits the bottom stream he single-pass conyersion in the reastor is specified to be 25%. The purge Steam 6 Steam 7 Steam 5 Steam 8 Steam 1 Steam 2 Steam 3 Reactor pure Oxygen Steam 4

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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The document appears to be a chemical engineering problem focused on a reaction process. Here is the transcription with an explanation of the accompanying diagram: --- **Problem 1:** A stoichiometric amount of impure oxygen (98% mol O₂ and 2 mol% N₂) in the fresh feed (stream 1) is used to oxidize CO to CO₂ at 100 atm absolute pressure in a steady-state process with a recycle of oxygen. The CO₂ produced in the reactor is removed completely by condensation via a separator placed after the reactor. No CO, O₂, or N₂ exits the bottom stream from the separator. The single-pass conversion of the reactor is specified to be 25%. The purge rate must be so chosen that the mole fraction of N₂ in the stream entering the reactor is 0.1. Choose as a basis of calculation one mole gas mixture in the stream entering the reactor (stream 2). Calculate the flow rates and compositions of streams 1, 3, and 6. **Diagram:** The diagram shows a flow process involving several streams and a reactor. The layout is as follows: 1. **Stream 1**: Enters the system carrying CO and impure Oxygen. 2. **Stream 2**: Represents the mixture entering the reactor. 3. **Reactor**: The central element where the oxidation of CO occurs. 4. **Stream 3**: Outputs from the reactor. 5. **Steam 4**: Flows downward from the separator, indicating removal of products. 6. **Stream 5**: Exits upward from the separator. 7. **Stream 6**: Additional stream leading away from the separator. 8. **Stream 7**: Connects back to the input, indicating a recycle loop. 9. **Steam 8**: Another recycled line feeding back to the reactor. --- The problem involves calculating the flow rates and compositions of different streams based on the chemical reactions and recycling process described.
Transcribed Image Text:The document appears to be a chemical engineering problem focused on a reaction process. Here is the transcription with an explanation of the accompanying diagram: --- **Problem 1:** A stoichiometric amount of impure oxygen (98% mol O₂ and 2 mol% N₂) in the fresh feed (stream 1) is used to oxidize CO to CO₂ at 100 atm absolute pressure in a steady-state process with a recycle of oxygen. The CO₂ produced in the reactor is removed completely by condensation via a separator placed after the reactor. No CO, O₂, or N₂ exits the bottom stream from the separator. The single-pass conversion of the reactor is specified to be 25%. The purge rate must be so chosen that the mole fraction of N₂ in the stream entering the reactor is 0.1. Choose as a basis of calculation one mole gas mixture in the stream entering the reactor (stream 2). Calculate the flow rates and compositions of streams 1, 3, and 6. **Diagram:** The diagram shows a flow process involving several streams and a reactor. The layout is as follows: 1. **Stream 1**: Enters the system carrying CO and impure Oxygen. 2. **Stream 2**: Represents the mixture entering the reactor. 3. **Reactor**: The central element where the oxidation of CO occurs. 4. **Stream 3**: Outputs from the reactor. 5. **Steam 4**: Flows downward from the separator, indicating removal of products. 6. **Stream 5**: Exits upward from the separator. 7. **Stream 6**: Additional stream leading away from the separator. 8. **Stream 7**: Connects back to the input, indicating a recycle loop. 9. **Steam 8**: Another recycled line feeding back to the reactor. --- The problem involves calculating the flow rates and compositions of different streams based on the chemical reactions and recycling process described.
Expert Solution
Step 1

Basis: 1 mol of gas mixture containing 0.1 mole fraction of N2.

The reaction of oxidation of CO to CO2 is given as follows:

CO + 12O2 → CO2

Since N2 is inert, it remains unreacted at the reactor outlet. Therefore, the amount of N2 removed in the purge stream 6 should be 0.1.

In feed, N2 is 2 mol% i.e. 0.02 mole fraction.

Thus, applying the inert balance, we can calculate the composition of stream 6 as follows:

N2 in feed×Feed to the reactor = Purge (S6)×N2 in purge1×0.02=S6×0.1S6 = 0.2 mol

CO in S6 is 0.9 since N2 is 0.1

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