example, it is more challenging to capture CO2 from natural gas
based power generation, which CO2% in exhaust gas is less than
4 mol%. The main disadvantages of chemical absorption are associated
with two aspects: the high-energy consumption to regenerate
the solvent and extract CO2 and the technical issues on corrosion
and solvent degradation. The other one is oxyfuel combustion capture.
Oxyfuel combustion takes place in a nitrogen-avoided environment.
As a result, the exhaust gases mainly consist of CO2 and
water vapor. Therefore, CO2 can be easily separated by condensation,
which can achieve a CO2 concentration of 95 vol.% or higher
[32].
Our previous work focused on characterizing and understanding
the features of the integration of the EvGT with CO2 capture
[33]. Many effects were also put on key parameter optimizations
[34,35]. The objectives of this work are to evaluate the technoeconomic
performances of the EvGT combined with CO2 capture.