Effect of Metal-Containing Additives on NOx Reduction in Combustion and Reburning

摘要

This paper describes experimental and modeling studies on the effect of metal-containing compounds on NOx reduction. Sodium and potassium carbonates, calcium acetate, and fly ash were injected into a 300 kW combustor in one of the following configurations: with the main fuel, with the reburning fuel, or into the reburning zone. Natural gas was used as the main fuel and the reburning fuel. Tests showed that co-injection of Na-, K-, and Ca-containing compounds with the main fuel reduced NOx emissions with and without reburning.