Question

A stream of pure propane (C3H8) and a stream of pure butane (C4H10) are both fed to a continuous combustion chamber, where they are burned with pure oxygen. Gas analysis indicates that the product gas from the combustion chamber contains 47.4 mole% H2O. The combustion gases are then fed to a condenser, where all of the water vapour is removed (as condensate) to give a gas stream containing 69.4 mole% CO2 and the balance is O2.

basis of 100 mol/min of dry product gas is assumed Determine all unknown molar flows and compositions (i.e. mole fractions). [30%] (e) Express the composition and flow rate of the dry product gas in mass units. [20%] (f) What would the composition of the gas from the condenser be, if combustion took place under stoichiometric oxygen conditions? (No calculations are required.) [

Answer 1