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The feed to the reactor contains ethylene, steam, and an inert gas. A sample of the reactor effluent gas (product stream) is analyzed and found to...
The feed to the reactor contains ethylene, steam, and an inert gas. A sample of the reactor effluent
gas (product stream) is analyzed and found to contain 43.3 mole% ethylene, 2.5 mole% ethanol,
0.14 mole% ether, 9.3 mole% inerts, and the balance water.
a) Take as a basis 100 mol of effluent gas, draw and label a flowchart, and do: a degree-of freedom analysis based on atomic/molecular species to prove that the system has zero
degrees of freedom.
(i) the molar composition of the reactor feed,
(ii) the percentage conversion of ethylene
(iii) the fractional yield of ethanol
(iv) the selectivity of ethanol production relative to ether production.
c) The percentage conversion of ethylene you calculated should be very low. Why do you
think the reactor would be designed to consume so little of the reactant? (Hint: If the
reaction mixture remained in the reactor long enough to use up most of the ethylene, what
would the main product constituent probably be?) What additional processing steps are
likely to take place downstream from the reactor?