A kinetic study on medium temperature desulfurization using a natural manganese ore

Yeo Il Yoon, Myung Wook Kim, Yong Seung Yoon, Sung Hyun Kim

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Natural manganese ores were selected as raw materials for the desulfurization sorbent because of economical efficiency and high reactivity on hydrogen sulfide. Initial reaction rates between H2S and desulfurization sorbent of natural manganese ores were determined in a temperature range of 400-800°C using a thermobalance reactor. All reactions were first order with respect to H2S and were expressed by the Arrhenius relation. When the sulfidation reaction was controlled by diffusion, the temperature dependence of the effective diffusivity was given by the Arrhenius equation. Activation energies and frequency factors were obtained from the product layer diffusion coefficient of various sorbents by plotting as an Arrhenius equation form. Several additives were mixed to improve the sulfidation capacity, and NiO was the best additive.

Original languageEnglish
Pages (from-to)2079-2087
Number of pages9
JournalChemical Engineering Science
Volume58
Issue number10
DOIs
Publication statusPublished - 2003 May

Keywords

  • Effective diffusivity
  • High temperature desulfurization
  • IGCC
  • Natural manganese ores

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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