Char-supported Fe-Zn-Cu sorbent prepared by ultrasonic-assisted impregnation for simultaneous removal of H2S and COS from coke oven gas

Jinxiao Dou, Arash Tahmasebi, Xianchun Li, Fengkui Yin, Jianglong Yu

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4 Citations (Scopus)

Abstract

Lignite char supported Fe-Zn-Cu sorbents were prepared by ultrasonic-assisted impregnation method for the simultaneous removal of H2S and COS from coke oven gas (COG). Sulfidation experiments were carried out in a fixed-bed quartz reactor using simulated COG. The results showed that the addition of Cu can significantly increase the sulfidation reactivity of char-supported Fe-Zn sorbents. Char-supported Fe-Zn-Cu sorbents with Fe:Zn:Cu molar ratio of 2:1:0.5 could simultaneously remove H2S and COS in the temperature range of 200-400°C. The sulfur capacity reached to 17.62 g S per 100 g sorbent at 400°C. The X-ray diffraction (XRD) analysis suggested that the addition of Cu into the Fe-Zn sorbent leads to the formation of composite oxides.

Original languageEnglish
Pages (from-to)352-358
Number of pages7
JournalEnvironmental Progress and Sustainable Energy
Volume35
Issue number2
DOIs
Publication statusPublished - Mar 2016
Externally publishedYes

Keywords

  • char-supported Fe-Zn-Cu sorbent
  • desulfurization activity
  • sulfur capacity
  • synergistic effect

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