2. Ammonia reacts with oxygen to form nitric oxide and water: 4NH3 +502 →→ 4NO + 6H₂O The fresh feed stream contains ammonia and oxygen, with the oxygen in 80.0% excess. The molar flow rate of the ammonia in the fresh feed stream is 200. mol/min. The conversion of the ammonia in the reactor is 65.0%. (a) Determine the number of degrees of freedom. Show your work. (b) Determine the molar flowrates of nitric oxide, oxygen, and water exiting the reactor. (c) To reduce the loss of the unreacted ammonia, the exit stream from the reactor is sent to a separation unit. Two streams leave the unit. One exit stream contains all of the ammonia and is recycled and combined with the fresh feed. The second exit (product) stream contains all of the nitric oxide, oxygen, and water. Draw the flowchart and label carefully. What is the overall conversion of the ammonia for this process? Is there sufficient oxygen in the fresh feed? Explain. What is the composition (mole fractions) of the nitric oxide, oxygen, and water in the product stream?
2. Ammonia reacts with oxygen to form nitric oxide and water: 4NH3 +502 →→ 4NO + 6H₂O The fresh feed stream contains ammonia and oxygen, with the oxygen in 80.0% excess. The molar flow rate of the ammonia in the fresh feed stream is 200. mol/min. The conversion of the ammonia in the reactor is 65.0%. (a) Determine the number of degrees of freedom. Show your work. (b) Determine the molar flowrates of nitric oxide, oxygen, and water exiting the reactor. (c) To reduce the loss of the unreacted ammonia, the exit stream from the reactor is sent to a separation unit. Two streams leave the unit. One exit stream contains all of the ammonia and is recycled and combined with the fresh feed. The second exit (product) stream contains all of the nitric oxide, oxygen, and water. Draw the flowchart and label carefully. What is the overall conversion of the ammonia for this process? Is there sufficient oxygen in the fresh feed? Explain. What is the composition (mole fractions) of the nitric oxide, oxygen, and water in the product stream?
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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Transcribed Image Text:2. Ammonia reacts with oxygen to form nitric oxide and water:
4NH3 + 50₂ → 4NO + 6H₂O
The fresh feed stream contains ammonia and oxygen, with the oxygen in 80.0% excess. The
molar flow rate of the ammonia in the fresh feed stream is 200. mol/min. The conversion of the
ammonia in the reactor is 65.0%.
(a) Determine the number of degrees of freedom. Show your work.
(b) Determine the molar flowrates of nitric oxide, oxygen, and water exiting the reactor.
(c) To reduce the loss of the unreacted ammonia, the exit stream from the reactor is sent to a
separation unit. Two streams leave the unit. One exit stream contains all of the ammonia and is
recycled and combined with the fresh feed. The second exit (product) stream contains all of the
nitric oxide, oxygen, and water.
Draw the flowchart and label carefully.
What is the overall conversion of the ammonia for this process?
Is there sufficient oxygen in the fresh feed? Explain.
What is the composition (mole fractions) of the nitric oxide, oxygen, and water in the product
stream?
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