(Solved): Ethanol is produced commercially by the hydration of ethylene: C2H4(g)+H2O(v)C2H5 ...
Ethanol is produced commercially by the hydration of ethylene: C2H4(g)+H2O(v)⇌C2H5OH(v) Some of the product is converted to diethyl ether in the undesired side reaction 2C2H5OH(v)⇌(C2H5)2O(v)+H2O(v) The combined feed to the reactor contains 53.7 mole %C2H4,36.7%H2O and the balance nitrogen which enters the reactor at 310∘C. The reactor operates isothermally at 310∘C. An ethylene conversion of 5% is achieved, and the yield of ethanol (moles ethanol produced/mole ethylene consumed) is 0.900 . Data for Diethyl Ether ΔH^f∘=−272.8kJ/mol for the liquid ΔH^v=26.05kJ/mol (assume independent of T)Cp[kJ/(mol⋅∘C)]=0.08945+40.33×10−5T(∘C)−2.244×10−7T2 (a) Calculate the reactor heating or cooling requirement in kJ/mol feed. (b) Why would the reactor be designed to yield such a low conversion of ethylene? What processing step (or steps) would probably follow the reactor in a commercial implementation of this process?
The primary reaction is and an undesirable sidereaction is (a) Calculate the number of moles of , in the exit product, . Recall from the problem statement that the conversion of ethylene is 5%, so 95% of the amount in the feed exits in the product. Use a basis of 1 mol feed