Control of nitrogen oxides emission by selective non-catalytic reduction in preheating section during iron ore pellets production

Reducing the NOx emission from pelletizing process is of great importance to the green development of iron and steel industry. The flue gas temperature of preheating (PH) section during grate-kiln iron ore pelletizing process typically ranges within 850–1050 °C, which meets the temperature requirements of selective non-catalytic reduction (SNCR) for NOx. The in-bed SNCR behavior of NOx in the PH section was investigated, and the influence of...