Methanol is produced by reacting carbon monoxide and hydrogen. A fresh feed stream containing CO and H2 joins a recycle stream and the combined stream is fed to a reactor. The reactor outlet stream flows at a rate of 350 mol/min and contains 10.6 wt% H2, 64.0 wt% CO, and 25.4 wt% CH;OH. This stream enters a cooler in which most of the methanol is condensed. The liquid methanol condensate is withdrawn as a product, and the gas stream leaving the condenser which contains CO, H2, and 0.4 mole% uncondensed CH;OH vapor is the recycle stream that combines with fresh feed. a) Take a basis of 100 g effluent, find the mole fraction of the effluent. b) Draw and label a block flow diagram of the process. c) Do degree of freedom analysis on condenser and overall process. d) Find amount of liquid methanol condensate, recycle stream, CO in fresh feed, and hydrogen in fresh feed. e) Find single pass conversion and overall conversion of CO. f) After several months of operation, the flowrate of liquid methanol leaving the condenser begins to decrease. List 3 possible explanations for such behavior.
Methanol is produced by reacting carbon monoxide and hydrogen. A fresh feed stream containing CO and H2 joins a recycle stream and the combined stream is fed to a reactor. The reactor outlet stream flows at a rate of 350 mol/min and contains 10.6 wt% H2, 64.0 wt% CO, and 25.4 wt% CH;OH. This stream enters a cooler in which most of the methanol is condensed. The liquid methanol condensate is withdrawn as a product, and the gas stream leaving the condenser which contains CO, H2, and 0.4 mole% uncondensed CH;OH vapor is the recycle stream that combines with fresh feed. a) Take a basis of 100 g effluent, find the mole fraction of the effluent. b) Draw and label a block flow diagram of the process. c) Do degree of freedom analysis on condenser and overall process. d) Find amount of liquid methanol condensate, recycle stream, CO in fresh feed, and hydrogen in fresh feed. e) Find single pass conversion and overall conversion of CO. f) After several months of operation, the flowrate of liquid methanol leaving the condenser begins to decrease. List 3 possible explanations for such behavior.
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:Methanol is produced by reacting carbon monoxide and hydrogen. A fresh feed stream
containing CO and H2 joins a recycle stream and the combined stream is fed to a reactor.
The reactor outlet stream flows at a rate of 350 mol/min and contains 10.6 wt% H2, 64.0
wt% CO, and 25.4 wt% CH;OH. This stream enters a cooler in which most of the
methanol is condensed. The liquid methanol condensate is withdrawn as a product, and
the gas stream leaving the condenser
which contains CO, H2, and 0.4 mole%
uncondensed CH;OH vapor is the recycle stream that combines with fresh feed.
a) Take a basis of 100 g effluent, find the mole fraction of the effluent.
b) Draw and label a block flow diagram of the process.
c) Do degree of freedom analysis on condenser and overall
process.
d) Find amount of liquid methanol condensate, recycle stream, CO in fresh feed,
and hydrogen in fresh feed.
e) Find single pass conversion and overall conversion of CO.
f) After several months of operation, the flowrate of liquid methanol leaving the
condenser begins to decrease. List 3 possible explanations for such behavior.
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