You must calculate and report the annual process CO2 emissions from each ammonia manufacturing process unit using the procedures in either paragraph (a) or (b) of this section.
Where:
CO2,G,k = Annual CO2 emissions arising from gaseous feedstock consumption (metric tons).
Fdstkn = Volume of the gaseous feedstock used in month n (scf of feedstock).
CCn = Carbon content of the gaseous feedstock, for month n (kg C per kg of feedstock), determined according to 98.74(c).
MW = Molecular weight of the gaseous feedstock (kg/kg-mole).
MVC = Molar volume conversion factor (849.5 scf per kg-mole at standard conditions).
44/12 = Ratio of molecular weights, CO2 to carbon.
0.001 = Conversion factor from kg to metric tons.
k = Processing unit.
n = Number of month.
Where:
CO2,L,k = Annual CO2 emissions arising from liquid feedstock consumption (metric tons).
Fdstkn = Volume of the liquid feedstock used in month n (gallons of feedstock).
CCn = Carbon content of the liquid feedstock, for month n (kg C per gallon of feedstock) determined according to 98.74(c).
44/12 = Ratio of molecular weights, CO2 to carbon.
0.001 = Conversion factor from kg to metric tons.
k = Processing unit.
n = Number of month.
Where:
CO2,S,k = Annual CO2 emissions arising from solid feedstock consumption (metric tons).
Fdstkn = Mass of the solid feedstock used in month n (kg of feedstock).
CCn = Carbon content of the solid feedstock, for month n (kg C per kg of feedstock), determined according to 98.74(c).
44/12 = Ratio of molecular weights, CO2 to carbon.
0.001 = Conversion factor from kg to metric tons.
k = Processing unit.
n = Number of month.
Where:
ECO2k = Annual CO2 emissions from each ammonia processing unit k (metric tons).
k = Processing unit.
Where:
CO2 = Annual combined CO2 emissions from all ammonia processing units (metric tons) (CO2 process emissions reported under this subpart may include CO2 that is later consumed on site for urea production, and therefore is not released to the ambient air from the ammonia manufacturing process unit(s)).
ECO2k = Annual CO2 emissions from each ammonia processing unit (metric tons).
k = Processing unit.
n = Total number of ammonia processing units.
40 C.F.R. §98.73