Synthesis gas (a mixture of CO, CO2, and H2) is converted to methanol in a react

Question

Synthesis gas (a mixture of CO, CO2, and H2) is converted to methanol in a reactor. In
addition to methanol, the stream leaving the reactor contains 20 mol% water and 10
mol% unreacted reactants and unwanted byproducts. The stream leaving the reactor is fed
to a series of two distillation columns. The first column separates all of the unreacted
reactants and unwanted byproducts into the overhead stream. The bottoms of the first
column is fed to the second column. In the second column, 99.8% of the water leaving
the reactor is removed in the bottoms product. The bottoms product of the second column
is 0.1 mol % methanol. Assuming a basis of 100 mol/h leaving the reactor, calculate the
molar flow rate and purity (methanol mole fraction) of the overhead stream of the second
column. As part of your solution, be sure to draw and clearly label the process flowchart.
(Hint: you may omit the reactor and simply use the reactor product stream as the feed to
the first column).

Explanation / Answer

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