Influence of Iron Oxides on NOx Emission in Coke Combustion

NOx emission in coke combustion with and without iron oxides were investigated in a fixed bed quartz reactor. Effects of Fe2O3 and Fe3O4 loading on NOx emission were discussed. NOx emission was also studied by simulating test with recycling flue gas with Fe3O4 modified coke as fuel. The results showed that Fe3O4 was catalytically active in NOx reduction. In coke combustion experiments, NOx emission decreased with increasing Fe3O4 loading up to 2.0wt%, while simulation tests showed that NOx emission decreased by 19.84% with 2.0wt% Fe3O4 modified coke as fuel.