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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Purification of Bunsen Reaction Products in Sulfur-Iodine Hydrogen Production Process

황-요오드 수소 제조 공정에서 분젠 반응 생성물의 정제

  • Cha, Kwang-Seo (Department of Fine Chemical Engineering and Applied Chemistry, Chungnam National University) ;
  • Kim, Young-Ho (Department of Fine Chemical Engineering and Applied Chemistry, Chungnam National University) ;
  • Kang, Young-Han (Department of Fine Chemical Engineering and Applied Chemistry, Chungnam National University) ;
  • Kim, Hyo-Sub (Department of Fine Chemical Engineering and Applied Chemistry, Chungnam National University) ;
  • Park, Chu-Sik (Hydrogen Energy Research Group, Korea Institute of Energy Research) ;
  • Bae, Ki-Kwang (Hydrogen Energy Research Group, Korea Institute of Energy Research)
  • 차광서 (충남대학교 정밀응용화학과) ;
  • 김영호 (충남대학교 정밀응용화학과) ;
  • 강영한 (충남대학교 정밀응용화학과) ;
  • 김효섭 (충남대학교 정밀응용화학과) ;
  • 박주식 (한국에너지기술연구원) ;
  • 배기광 (한국에너지기술연구원)
  • Received : 2010.02.11
  • Accepted : 2010.06.25
  • Published : 2010.06.30
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Abstract

The purification of two liquid phases ($H_2SO_4$ phase and HIx phase) formed from a Bunsen reaction in Sulfur-Iodine (SI) hydrogen production process was investigated in order to operate SI process efficiently. The each synthetic solution for two liquid phases contained impurities was prepared on the basis of a proper composition obtained from Bunsen reaction. The purification of each solution was performed by counter-current flow using a packed column at different temperatures and $N_2$ flow rates. As the results of purification, impurities existed in each phase were decreased with increasing the temperature and the $N_2$ flow rate. In particular, the increase of the $N_2$ flow rate at the lower temperatures was effective to remove impurities by a reverse Bunsen reaction without side reactions. On the whole, it may be concluded that the purification of each phase is accomplished by mixing effects of the stripping, the evaporation, and the reverse Bunsen reaction.

Keywords

References

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