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Characterizations of Manganese-Based Desulfurated Sorbents for Flue-Gas Desulfurization

  • Yanni Xuan
  • Qingbo YuEmail author
  • Kun Wang
  • Wenjun Duan
  • Qin Qin
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

For the application of dry flue-gas desulfurization, Mn2O3/SiC desulfurated sorbents with various manganese contents are prepared by the sol–gel method. The desulfurization performance of the sorbents is evaluated by a fixed-bed reactor with the simulated flue gas. X-ray diffraction and scanning electron microscope are adopted to characterize the crystalline phases and microstructure of the sorbents, respectively. For all the sorbents, the SO2 removal efficiency is above 93%, attributed to the nanoscale oval-shaped Mn2O3. For the sorbent with a manganese content of 50%, its breakthrough time reaches 27 min, benefiting from the uniform dispersion of SiC and Mn2O3. Compared to the sorbents with SiC, the breakthrough time of pure Mn2O3 is much shorter, resulting from the agglomeration of active component. Choosing Mn2O3 as the active component and SiC as the supporter to remove SO2 from flue gas has the obvious advantages of high SO2 removal efficiency rate.

Keywords

Flue-gas desulfurization Sol–gel method Manganese oxide SiC 

Notes

Acknowledgements

This research is supported by National Natural Science Foundation of China (No. 51704071), the Major State Research Development Program of China (No. 2017YFB0603603) and fundamental research funds for the central university (No. N162504012).

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Yanni Xuan
    • 1
  • Qingbo Yu
    • 1
    Email author
  • Kun Wang
    • 1
  • Wenjun Duan
    • 1
  • Qin Qin
    • 1
  1. 1.School of MetallurgyNortheastern UniversityHeping District, ShenyangPeople’s Republic of China

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