Effect of FeCI3 on Nitrogen Distribution in Coal Pyrolysis
The experiments were carried out in horizontal tube furnace with Guizhou Liuzhi coal to understand the effects of FeCl3 addition on nitrogen distribution under different pyrolysis atmospheres. Two mixing ways, namely, physically mixing and mixing with a saturated aqueous solution of FeCl3, were introduced. Three pyrolysis atmospheres, N2, CO2 and At, were investigated. CO2 was used to understand the effect of highconcentration of CO2 on nitrogen distribution in oxy-fuel environment in coal pyrolysis. The results show that at the temperature of 1 273 K, FeCl3 addition with DEM decreases HCN under At. Under N2, FeCl3 increases the release of HCN due to high concentration of N2. Under CO2, HCN is much smaller than that under other atmospheres, because of the effect of FeCl3 on devolatilization and char conversion. Under Ar or N2 atmospheres, NH3 decreases sharply with FeCl3 addition. NH3 is not detected under CO2.
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万方数据
维普
