evaluation of CO2 utilisation for fuel production

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evaluation of CO2 utilisation for fuel production ( evaluation-co2-utilisation-fuel-production )

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0 0.5 1 1.5 2 0 -60 -80 -100 -120 FA O2 ISBL Cons Steam -20 -40 CO2 Elec Figure 17: NPV variation with prices of FA, O2, CO2, electricity, HP steam, consumables and ISBL. These are represented by relative increments/decrements towards the original values considered. Table 9: Breakeven prices for NPV=0, for the FA CDU plant. Breakeven Reference FA O2 CO2 price (€/t) 1 656 3 322 -1 100 price (€/t) 650 54 38 6.2.2 Formic acid CDU plant bivariate sensitivity analyses results Taking into account the importance of the FA and electricity prices, and our interest in the price of the tonne of CO2, Figure 18 and Figure 19 summarise bivariate analyses, with the price of electricity as the independent variable, and the prices of CO2 and FA, that make the NPV equal to zero (at the given electricity price), as the dependent variables. The price of electricity is varied between zero ("free" electricity) and EUR 100/MWh. Considering that the prices for CO2 is EUR 38.4/t and for FA is EUR 650/t (see Table 12), even at low electricity prices, the prices needed for each variable to make the plant profitable are a long way from market conditions. Price electricity (€/MWh) 0 0 20 40 60 80 100 -300 -600 -900 -1200 Figure 18: Prices of CO2 that make NPV = 0 for a range of electricity prices (x axis) in the FA CDU plant. 57 Price CO2 (€/t) NPV (M€)

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