Desulfurization and Regeneration Properties Study of Fe₂O₃/Attapulgite Removing H₂S

Abstract:

Fe₂O₃/attapulgite desulfurizer was prepared by impregnation, and was regenerated by use of heat air method. The desulfurization test from a gas containing 100 vol% H₂S was carried out over attapulgite supported Fe₂O₃ in a fixed-bed system at atmospheric pressure and room. The effects of the chemical nature of Fe₂O₃ on desulfurization capacity were studied. Materials before and after the desulfurization test were characterized using FTIR and XRD. Materials after the regeneration test were characterized using XRD. The characterization results suggest that modification process does not change the structure of attapulgite. Iron species disperses inside channels and the outside surface in the crystalline phase of iron oxide. The material with iron oxide content of 40.0 wt% presented highest H₂S uptake capacity. The deactivated that Fe₂O₃/attapulgite desulfurizer was regenerated 0.8L/min hot air in 323k, the regeneration efficiency reached 81.22%, by 4 times after regeneration can reach 51.9%.

• Periodical: Applied Mechanics and Materials (Volumes 152-154)
• Pages: 348-353
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.152-154.348
• Online since: January 2012
• Authors: Lan Li, Qing Ning Wang, Jun Yi Chen
• Keywords: Attapulgite, Desulfurization, Hydrogen Sulfide, Iron Oxide, Regeneration

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