Experimental study of the fly ash iron morphology effect on flue gas mercury removal

摘要

In this paper, magnetic beads were separated from two different power plants fly ash by magnetic separation, and the separated magnetic beads were analyzed by XRD. In a self-built fixed-bed system, the experiments that magnetic beads from two power plants, α-Fe_2O_3 and γ-Fe_2O_3 affect formation distribution of mercury in flue gas were carried out. The results showed that the magnetic beads in fly ash have a certain capacity to oxidize the mercury in flue gas, and the γ-Fe_2O_3 has greater influence on the species distribution of mercury than α-Fe_2O_3.