The Properties of Iron Oxide Desulfurization Sorbents Regenerated under the Synergy of SO<sub>2</sub>-O<sub>2 </sub>Atmosphere

Abstract

Iron oxide (Fe2O3) desulfurization sorbent was prepared from FeSO4 and NH4HCO3 by precipitation method, and its regeneration behavior under different atmosphere was studied by using Thermos gravimetric analyzer. It is found that the regeneration of Fe2O3 desulfurization sorbent is the best in the synergy of SO2-O2 atmosphere. When the concentration of O2 or SO2 in the synergy of SO2-O2 atmosphere was increased, the regeneration time can be reduced, which is beneficial to the regeneration of iron oxide desulfurization sorbent. The regeneration of Fe2O3 desulfurization sorbent in the synergy of SO2-O2 atmosphere can not only prevent sorbent sintering in single O2 atmosphere but also improve the rate of regeneration in single SO2 atmosphere.