A COMPLEMENTARY AND SYNERGISTIC EFFECT OF FE-ZN BINARY METAL-OXIDE INTHE PROCESS OF HIGH-TEMPERATURE FUEL GAS DESULFURIZATION

Fe-57 Mossbauer spectroscopy was used to investigate the evolution of Fe-Zn binary metal oxide sorbent in the process of high-temperature fu el gas desulfurization. The results of phase analyses show that Fe-Zn binary metal oxide sorbent is rapidly reduced in hot fuel gas and deco mposed to new phases of highly dispersed microcrystalline elemental ir on and zinc oxide, both of which become the active desulfurization con stituents. A complementary and synergistic effect between active iron acting as a high sulfur opacity constituent and active zinc oxide acti ng as a,deep refining desulfurization constituent exists in this type of sorbent for hot fuel gas desulfurization.