Based on the temperature and O2 concentration in the cement precalciner, co-combustion\nof anthracite and Refuse Derived Fuel (RDF) were investigated using a thermogravimetric analyzer\n(TGA) and a double furnaces reactor. Both the TGA and double furnaces reactor results indicated\nthat the co-combustion characteristics were the linear additive effect in the devolatilization stage,\nwhile it was the synergistic effect in the char combustion stage. During co-combustion, at 900 ââ??¦C,\nNOx released rapidly during the devolatilization stage, but in the char combustion stage the NOx\nformation were inhibited; at 800 ââ??¦C, a large amount of CO formed, which could reduce the NOx.\nIn general, at 900 ââ??¦C and 800 ââ??¦C, the application of co-combustion could lower the NOx emission yield\nand lower the NOx conversion. By combining the combustion characteristics with the XRD results,\nit was indicated that during co-combustion, at 800 ââ??¦C, the SO2 formation reaction was inhibited,\nand the SO2 yield and conversion were quite low.
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