Exercising allocation of resource uses; Functional Unit: kg FT diesel produced kg FT Naptha produced (what is the CO2 emission to produce I kg FT diesel and 1 kg FT Napth?) Process Inputs: Biomass:...

Exercising allocation of resource uses;

Functional Unit:
kg FT diesel produced
kg FT Naphtha produced
Q.1 (What is the CO2 emission to produce I kg FT diesel and 1 kg FT Naptha?)
Solution: The CO2 emission to produce I kg FT diesel and 1 kg FT Naptha is calculated as below:
As we know that total CO2 emissions for gasification and FT synthesis: 1000 kg when 100 Kg FT diesel and 20 kg FT Naptha is produced.
So, to produce 1 Kg FT diesel and 1 kg FT Naptha CO2 emissions =
CO2 emissions for 100+20 = 120 Kg fuel = 1000Kg
So, CO2 emissions for 1 Kg Fuel = 1000/ 120 Kg
And therefore, total CO2 emissions for 1 + 1 = 2 Kg fuel (1 Kg FT diesel and 1 kg FT Naptha) = 1000/120*2 = 16.7 Kg
Process Inputs:
Biomass: 300 kg
Upstream fuel: 100 kg
Coal: 700 kg
Outputs:
FT Naptha (product): 20kg, 600 MJ, sale for $200
FT Diesel (product): 100 kg, 4100 MJ, sale for $800
Electricity (co-product): 100 kWh
Total CO2 emissions for gasification and FT synthesis: 1000 kg
Question:
How much biomass/coal/fuel is used to produce 1 kg of Naptha and 1 kg Diesel with gasification and FT synthesis?
We assume the coal use of electricity production is 1 kg/kWh electricity, and no other fuel or biomass used for electricity generation. (This is for...