Catalysis Reduction of NO and HCN/NH3 during Reburning: a Short Review
Reburning is effective to control NO emission. The paper presents a short review on recent research on catalysis reduction of NO and HCN/NH3 by some metal and their oxides during reburning. The major difficulties that limit NO reduction efficiency by reburning involve the re-oxidation of the intermediate products during reburning, HCN/NH3 and char nitrogen to NO. So far, results showed that Fe2O3 could reduce the formation of HCN/NH3 after reburning and metallic iron could directly reduce NO to N2. Temperature and co-existing gases influenced the catalysis performance of Fe and its oxides. Detailed mechanism and kinetics of the reactions should be further investigated.
Hao Zhang, Yang Fu and Zhong Tang
Y. X. Su et al., "Catalysis Reduction of NO and HCN/NH3 during Reburning: a Short Review", Advanced Materials Research, Vols. 354-355, pp. 365-368, 2012