CO + 2H2 −→ CH3OH The fresh feed to a methanol reactor contains 32.0 mole% CO, 64.0% H2 and 4% N2 and flows at a rate of 100 mol h−1 . The fresh feed is mixed with a recycle stream flowing at a rate of 400 mol h−1 to produce a reactor feed containing 13.0 mole% N2. The reactor outlet stream is fed to a condenser from which liquid methanol is removed. To control N2 buildup, a purge stream is withdrawn from the gas stream leaving the condenser. The gases not purged constitute the stream recycled to the reactor. (i)
3. Methanol can be produced from synthesis gas by the following reaction:
CO + 2H2 −→ CH3OH
The fresh feed to a methanol reactor contains 32.0 mole% CO, 64.0% H2 and 4% N2 and flows at a rate of
100 mol h−1
. The fresh feed is mixed with a recycle stream flowing at a rate of 400 mol h−1
to produce a
reactor feed containing 13.0 mole% N2. The reactor outlet stream is fed to a condenser from which liquid
methanol is removed. To control N2 buildup, a purge stream is withdrawn from the gas stream leaving the
condenser. The gases not purged constitute the stream recycled to the reactor.
(i) Draw a properly labelled diagram to illustrate the process.
(ii) Calculate the production rate of liquid methanol (mol h−1
)
(iii) Calculate the molar flow rate and composition of the purge gas.
(iv) Calculate the overall and single pass conversions.
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