In the famous Haber process to manufacture ammonia, the reaction is carried out at pressures of 800 to 1000 atm and at 500°C to 600°C using a suitable catalyst. Only a small fraction of the material entering the reactor reacts on one pass, so recycle is needed. Also, because the nitrogen is obtained from the air, it contains almost 1% rare gases (chiefly argon) that do not react. The rare gases would continue to build up in the recycle until their effect on the reaction equilibrium became adverse, so a small purge stream is used. 3H₂ + N₂- 2NH3 N₂ H₂ Ar Reactor N₂, H₂, Ar Separator NH3 (Liquid) (a) How many moles are recycled and purged? (b) What is the percent conversion of hydrogen per pass? (c) What is the overall conversion of hydrogen? Purge (Gas) The fresh feed of gas composed of 75.16mol % H2, 24.57% N2, and 0.27% Ar is mixed with the recycled gas and enters the reactor with a composition of 79.52% H₂. The gas stream leaving the ammonia separator contains 80.01% H₂ and no ammonia. The product ammonia contains no dissolved gases. Per 100 moles of fresh feed:
In the famous Haber process to manufacture ammonia, the reaction is carried out at pressures of 800 to 1000 atm and at 500°C to 600°C using a suitable catalyst. Only a small fraction of the material entering the reactor reacts on one pass, so recycle is needed. Also, because the nitrogen is obtained from the air, it contains almost 1% rare gases (chiefly argon) that do not react. The rare gases would continue to build up in the recycle until their effect on the reaction equilibrium became adverse, so a small purge stream is used. 3H₂ + N₂- 2NH3 N₂ H₂ Ar Reactor N₂, H₂, Ar Separator NH3 (Liquid) (a) How many moles are recycled and purged? (b) What is the percent conversion of hydrogen per pass? (c) What is the overall conversion of hydrogen? Purge (Gas) The fresh feed of gas composed of 75.16mol % H2, 24.57% N2, and 0.27% Ar is mixed with the recycled gas and enters the reactor with a composition of 79.52% H₂. The gas stream leaving the ammonia separator contains 80.01% H₂ and no ammonia. The product ammonia contains no dissolved gases. Per 100 moles of fresh feed:
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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Instructions: For the problem attached, please establish the process' history, description, advantages and disadvantages. Such, please elaborate on the existing process conditions (i.e. conversion, extent of reaction, and others) and state all valid assumptions in reference to published materials.
In line with this, please attach the link of the scientific journals you referred to here or your resources. as I will do more research about it. Thus, no need for several paragraphs. Bullet points with two-three sentences paragraph will be okay too. Please help me by suggesting ideas.
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Transcribed Image Text:In the famous Haber process to manufacture ammonia, the reaction is carried out at pressures of
800 to 1000 atm and at 500°C to 600°C using a suitable catalyst. Only a small fraction of the
material entering the reactor reacts on one pass, so recycle is needed. Also, because the nitrogen
is obtained from the air, it contains almost 1% rare gases (chiefly argon) that do not react. The
rare gases would continue to build up in the recycle until their effect on the reaction equilibrium
became adverse, so a small purge stream is used.
N₂
H₂
Ar
3H₂ + N₂
Reactor
N₂, H₂, Ar
-2NH3
Separator
-NH3 (Liquid)
(a) How many moles are recycled and purged?
(b) What is the percent conversion of hydrogen per pass?
(c) What is the overall conversion of hydrogen?
Purge (Gas)
The fresh feed of gas composed of 75.16mol% H₂, 24.57% N2, and 0.27% Ar is mixed with the
recycled gas and enters the reactor with a composition of 79.52% H₂. The gas stream leaving the
ammonia separator contains 80.01% H₂ and no ammonia. The product ammonia contains no
dissolved gases. Per 100 moles of fresh feed:
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