| Primary acid rain source is Sulfur dioxide in sintering gas,At present,the desulphurization ways are wet method,dry method and half-dry method,but cost of the methods is expensive and secondary pollution.The method of directly catalyzing CO to reduce SO2 into substance of S,has the advantages of avoiding the emergence of secondary pollution.In the paper,we prepared a series of iron catalysts.With the SO2+CO+N2 system,the desulfurization rate is 84% by 10% Fe2O3/γ-Al2O3 at 400 ℃. |