Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Effect of Pre-treatment Method on Reactivity of WGS Catalyst for SEWGS System

SEWGS 시스템을 위한 WGS 촉매의 반응성에 미치는 수소 전 처리 방법의 영향

  • Ryu, Hojung (Korea Institute of Energy Research) ;
  • Park, Jihye (Korea Institute of Energy Research) ;
  • Lee, Dongho (Korea Institute of Energy Research) ;
  • Shun, Dowon (Korea Institute of Energy Research) ;
  • Rhee, Youngwoo (Graduate School of Energy Science and Technology, Chungnam National University)
  • 류호정 (한국에너지기술연구원) ;
  • 박지혜 (한국에너지기술연구원) ;
  • 이동호 (한국에너지기술연구원) ;
  • 선도원 (한국에너지기술연구원) ;
  • 이영우 (충남대학교 에너지과학기술대학원)
  • Received : 2014.05.27
  • Accepted : 2014.08.31
  • Published : 2014.08.30
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Abstract

Thermal shock or overheating of WGS catalyst for SEWGS system during hydrogen pre-treatment can cause reactivity decay of the catalyst. To select appropriate pre-treatment condition, temperature profiles of catalyst bed (or outside fluidized particle bed of bed insert) during pre-treatment were measured and then CO conversions of those catalysts during WGS reaction were also measured and compared. Drastic overheating of catalyst took place when we reduce catalyst at fixed bed condition and these catalysts showed low CO conversion during WGS reaction. On the contrary, there was no overheating of catalyst at fluidized bed condition not only physical mixing case but also bed insert case. Spring type bed insert showed acceptable CO conversion even at low WGS content. Consequently, feasibility of high CO conversion without decay of reactivity of catalyst and holding the WGS catalyst inside the SEWGS reactor as tablet shape were confirmed using spring type bed insert.

Keywords

References

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