PhD Thesis - Energy Systems Research Unit - University of Strathclyde

Where Methane = Methane Production Rate (kg/hr)
Percent = Reaction Completion Percentage
Density = Density of Methanol (kg/litre)
If there is not sufficient carbon dioxide present, and extra may not be utilised,
the amount of methanol that can be made with the carbon dioxide present is
calculated using,
Methanol Production = 512 x CO2 x Percent (6.23)
Rate (litres/hr) 176 x Density x 100
Where CO2 = CO2 Production Rate (kg/hr),
and the remaining, unused methane is calculated using,
Remaining = Methane – (196 x CO2 x Percent) (6.24)
Methane (kg/hr) (176 x 100)
The methanol that can be made using the first chemical reaction is then
determined in the same manner, by direct proportion using the first chemical
equation, and added to the methanol production rate for that timestep. If
desired, the remaining methane production rate may be calculated as described
for hydrogen production, as can the process electricity and heat requirements
and the electricity required for gas storage. The total amount of methanol
produced (litres) throughout the simulation period, and any extra carbon dioxide
required, is given along with the final production rate graphs.
197