Comparison of desulfurization characteristics of lignite char-supported Fe and Fe-Mo sorbents for hot gas cleaning

Fengkui Yin, Jianglong Yu, Sushil Gupta, Shaoyan Wang, Dongmei Wang, Jinxiao Dou

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17 Citations (Scopus)

Abstract

The desulfurization behavior of novel Fe and Fe-Mo sorbents supported using Chinese lignite chars for desulfurization of hot coal gases was investigated and compared. The desulfurization experiments were carried out using a fixed-bed quartz reactor over a temperature range of 673 K to 873 K in simulated coal gas containing 0.47% H2S and 0.047% COS. The product gases composition and chemical phases of sorbents were analyzed using a gas chromatograph and X-ray diffractometer, respectively. The results show that iron and Fe-Mo sorbents supported on lignite char demonstrated high desulfurization efficiency under the present experimental conditions. The sulfur capacity of iron-based sorbents is determined by the amount of iron contained in the sorbents and the addition of Mo into the iron-based sorbents effectively improves the desulfurization efficiency of char-supported iron sorbents.

Original languageEnglish
Pages (from-to)17-22
Number of pages6
JournalFuel Processing Technology
Volume117
DOIs
Publication statusPublished - 2014
Externally publishedYes

Keywords

  • Activated-char
  • Desulfurization efficiency
  • Hot coal gas desulfurization
  • Iron-based sorbents
  • Sulfur capacity

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