Oxidative dehydrogenation of ethane is the conversion of ethane with oxygen to yield ethylene and water.In...

Oxidative dehydrogenation of ethane is the conversion of ethane with oxygen to yield ethylene and water.In addition to oxidative dehydrogenation, ethane/oxygen mixtures can also undergo partial oxidation, i.e. the formation of synthesis gas (CO and H2), as well as total oxidation, i.e. complete combustion of ethane towards CO2 and water.Hydrogen is of great interest as a feed for fuel cells. However, in order to use the hydrogen content of the syngas produced via partial oxidation of ethane, one would need to remove virtually all the CO from the mixture since CO is a strong poison for most fuel cells. This could be done through addition of steam in order to convert the CO via the so-called ‘water gas shift’ reaction (WGS: CO + H2O = CO2 + H2). Assuming a feed flow of 100 L/min of a feed mixture 75vol% air and 25vol% ethane, and furthermore assuming that the partial oxidation reaction goes to completion, how much steam needs to be added in order to completely convert the CO? (Assume stoichiometric conversion via WGS.) What is the composition of the effluent stream (in molar fractions)?

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