Optimized Multi-pollutant Control in Oxy-fuel Combustion Systems Using CO2 Capture and Compression Process

Abstract In conventional fossil fuel power plants, SO x and NO x are removed via flue gas desulfurization units (FGDs) and selective catalytic or non-catalytic reduction units (SCRs and NSCRs) or by other processes, which increase CAPEX and OPEX of the plant. Oxy-fuel combustion with CO 2 capture and compression provides new means for efficient removal of these pollutants. This is done within the compression and cooling inter-stages of the CO 2 capture unit, hence eliminating the need for upstream FGDs and SCRs. This paper provides the preliminary results from a test campaign carried out at CanmetENERGY's 0.3MW thermal integrated oxy-fuel research facility. Results show significant removal rates for SO x (>90%) and NO x (∼50%) and provide insight for maximizing the removal of these pollutants with simple modifications to the unit.