In order to promote the reaction between NOx and NH3 the catalitic activity of dolomite loading various metal oxides was tested.As a result dolomite loading Fe2O3 was found to be the most active of the bed materials tested.NOx emission was reduced from 267 to 57 ppm by the addition of 2000 ppm of NH3 when this bed material was used.Furthermore, combustion efficiency at temperatures below 900°C was improved by loading Fe2O3 on the dolomite.The sulfer removing efficacy of the Fe2O3-dolomite was exactly same as that of dolomite, and the concentration of SOx+H2S in flue gases was as low as 10 ppm at 850°C.
