Methanol (CH3OH) is converted to formaldehyde (HCHO) as shown in the flowchart, with the following reactions in the reactor: CH3OHHCHO + H2 2H2 + 02 + 2H20 Fresh feed of methanol is mixed with a recycle stream and enters the reactor. Air and water are also fed to the reactor. The outlet of the reactor is fed to a series of separation processes such that pure methanol is recycled and the amount of methanol in the other stream leaving the column is 1 mole%. All compositions are percentage by mole.

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
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QUESTION 3
Methanol (CH3OH) is converted to formaldehyde (HCHO) as shown in the flowchart, with the following reactions in the reactor:
CH3OHHCHO + H2
2H2 + O2 → 2H20
Fresh feed of methanol is mixed with a recycle stream and enters the reactor. Air and water are also fed to the reactor. The outlet of the reactor is
fed to a series of separation processes such that pure methanol is recycled and the amount of methanol in the other stream leaving the column is 1
mole%. All compositions are percentage by mole.
CH,OH
Catalytic
100 mol/s
CHОН 8.34%
HCHO 25.2%
CH,OH
CH;OH
Reactor
31.8%
N2
O2
H2
H20
0.86%
5.00%
CH3OH 1.00%
air
28.8%
H,O
all compositions are in mol%
Transcribed Image Text:QUESTION 3 Methanol (CH3OH) is converted to formaldehyde (HCHO) as shown in the flowchart, with the following reactions in the reactor: CH3OHHCHO + H2 2H2 + O2 → 2H20 Fresh feed of methanol is mixed with a recycle stream and enters the reactor. Air and water are also fed to the reactor. The outlet of the reactor is fed to a series of separation processes such that pure methanol is recycled and the amount of methanol in the other stream leaving the column is 1 mole%. All compositions are percentage by mole. CH,OH Catalytic 100 mol/s CHОН 8.34% HCHO 25.2% CH,OH CH;OH Reactor 31.8% N2 O2 H2 H20 0.86% 5.00% CH3OH 1.00% air 28.8% H,O all compositions are in mol%
a. Taking 100 mol/s as a basis for the reactor outlet, write extent of reaction equations for each reactive species in
the reactor.
b. Using extent of reaction method, find the single-pass conversion of methanol and the rate of air and water
entering the reacto
C. Calculate the amount of fresh feed of methanol.
d. What is the overall conversion of methanol? [2
Transcribed Image Text:a. Taking 100 mol/s as a basis for the reactor outlet, write extent of reaction equations for each reactive species in the reactor. b. Using extent of reaction method, find the single-pass conversion of methanol and the rate of air and water entering the reacto C. Calculate the amount of fresh feed of methanol. d. What is the overall conversion of methanol? [2
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