The Regeneration Properties of Manganese Oxide Sorbent under SO2 Atmosphere

Hui Qing Wang; Shang Guan Ju; Li Ping Liu; Xiao Wei Zhao; Jie Mi

doi:10.4028/www.scientific.net/MSF.859.140

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HomeMaterials Science ForumMaterials Science Forum Vol. 859The Regeneration Properties of Manganese Oxide...

The Regeneration Properties of Manganese Oxide Sorbent under SO₂Atmosphere

Abstract:

The effects of temperature and concentration of sulfur dioxide on regeneration behavior of manganese oxide sorbent were studied in a fixed-bed reactor. The sorbents were characterized by X-ray diffraction and X-ray photoelectron spectroscopy. Subsequently, the regeneration mechanism was inferred and the yield of export elemental sulfur was calculated. The study shows that, the major regeneration products are Mn₃O₄, MnSO₄ and a small amount of elemental sulfur under SO₂ atmosphere.The sulfate can be converted to Mn₃O₄and Mn₂O₃ at 800 °C under N₂ atmosphere. The elemental sulfur productivity increases with the increase of temperature and concentration of sulfur dioxide.The regeneration conversion attains maximum value (68%) at 800 °C under the atmosphere of 1.68% SO₂, and the productivity of elemental sulfur reaches to maximum value (29%) under the conditions.

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Materials Science Forum (Volume 859)

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140-145

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https://doi.org/10.4028/www.scientific.net/MSF.859.140

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Online since:

May 2016

Authors:

Hui Qing Wang, Shang Guan Ju*, Li Ping Liu, Xiao Wei Zhao, Jie Mi

Keywords:

High-Temperature Coal Gas Desulfurization, Manganese Oxide Sorbent, Regeneration

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