Effect of the oxygen carrier ilmenite on NOX formation in chemical-looping combustion

The formation of NOx from fuel-bound nitrogen is important for the design chemical-looping combustion (CLC) power plants. This work studied to what extent NO and NH3 reacts with perovskite-like oxygen carrier ilmenite under conditions relevant CLC. Based on mass balance calculations, N2 was major outlet N-species in all experiments. More measured at lower temperatures a higher oxidation level carrier. presence syngas hindered reduction by ilmenite. There were significant differences between two ilmenites respect selectivity. Norwegian (rock) reduced efficiently showed stable reaction behavior compared Australian (sand) could be attributed titanium content