High temperature removal of hydrogen sulfide using an N-150 sorbent

T. H. Ko, H. Chu, L. K. Chaung, T. K. Tseng

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39 Citations (Scopus)


In this study, an N-150 sorbent was used as a high temperature desulfurization sorbent for the removal of hydrogen sulfide from coal gas in a fixed bed reactor. The results indicate that the N-150 sorbent could be used for H 2S removal in the tested temperature ranges. Regeneration test also reveals that utilization of the N-150 sorbent maintains up to 85% compared to the fresh sorbent. No significant degeneration occurs on the N-150 sorbent. In addition, various concentrations of H 2S, H 2 and CO were also considered in the performance test of the N-150 sorbent. Except for H 2S, H 2 and CO act the important roles in the high temperature desulfurization. By increasing the H 2 concentration, the sulfur capacity of the sorbent decreases and an adverse result is observed in the case of increasing CO concentration. This can be explained via water-shift reaction. On the basis of the instrument analysis, X-ray powder diffraction determination and SEM images with EDS spectrum characterization, residual sulfur is found in the regenerated N-150 sorbent and this sulfur species is sulfate which resulted by incomplete regeneration. The sulfate formation and sintering effect are major reasons to cause activity loss in the sulfidation/regeneration cycles.

Original languageEnglish
Pages (from-to)145-152
Number of pages8
JournalJournal of Hazardous Materials
Issue number1-3
Publication statusPublished - 2004 Oct 18

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis


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