摘要
本文采用５７ＦｅＭｏｓｓｂａｕｅｒ谱学方法，跟踪考察氧化铁在高温（９７３Ｋ）燃气脱硫过程中的转化演变，取得有关其脱硫、失活与再生机理的明确信息．
Abstract The 57Fe Mossbauer spectroscopy was used to investigate the transformations of ferric oxide sorbent during hot fuel gas desulfurizahon. The results show that the high dispcrsive elemental iron phase formed rapidly from the reduction of fcrric oxide becomes the active dcsulfurisation phase. The sulfided product of the sorbent is the troilitc FoS. The carbonisation process progresses in parallel with the dcsulfurization process. The formation of bulk carbide θ-Fe3C results directly in the loss of sulfur capacity, and the depositing of surface carbon cventllally leads the surfent to the deactivation. The initial desulfurization activity of the deactivated sorbent can be efficiently regained by a controlled oxidation regeneration treatment with an air / steam mixture around 973K.
