The Effect of Regeneration Conditions on the Properties of CeO₂ Desulfurization Sorbent in SO₂ Atmosphere

Abstract:

CeO₂ desulfurization sorbent was prepared by calcination of Ce(NO₃)₃ ● 6H₂O and the effect of regeneration conditions on its properties in SO₂ atmosphere was investigated in a fixed bed reactor. The regeneration conversion and the yield of elemental sulfur for CeO₂ desulfurization sorbent were tested and calculated. And the composition and the morphology of CeO₂ desulfurization sorbent before and after regeneration were obtained by X-ray diffraction and scanning electron microscope. It was found that the main components of the regeneration products of Ce₂O desulfurization sorbent were solid CeO₂ and gaseous elemental S in SO₂ atmosphere. The optimum regeneration condition of CeO₂ desulfurization sorbent is that the regeneration temperature of 750 °C and the SO₂ concentration of 4.25 %, under which the CeO₂ desulfurization sorbent shows the higher regeneration conversion of 96 % and the yield of elemental sulfur of 68.95 wt. %.

• Periodical: Materials Science Forum (Volume 896)
• Pages: 155-161
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.896.155
• Online since: March 2017
• Authors: Lei Yang, Shang Guan Ju*, Hui Qing Wang, Jia An, Jun Ming Yu, Jie Mi, Mao Qian Miao
• Keywords: CeO₂ Desulfurization Sorbent, Regeneration Conditions, Yield of Elemental Sulfur

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