What are the compositions (mole and mass fractions) and volumetric flow rates (m³/kmol CH₄ fed to burners) of (a) the effluent gas from the reformer burners and (b) the gas entering the stack? What is the specific gravity, relative to ambient air (30°C, 1 atm, 70% rh), of the stack gas as it enters the stack? Why is this quantity of importance in designing the stack? Why might there be a lower limit on the temperature to which the gas can be cooled prior to introducing it to the stack?

Use a methane feed rate to the reformer of 1600 kmol/h as a basis for subsequent calculations. When all calculations have been completed, scale the results based on the required production rate of specification- grade methanol.