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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Study on Scale-up of Electro-Electrodialysis [EED] Cell for HI Concentration

HI 농축을 위한 전해-전기투석 셀의 스케일-업에 관한 연구

  • Lee, Sang-Ho (Hydrogen Production & Storage Research Center, Korea Institute of Energy Research) ;
  • Hong, Seong-Dae (Hydrogen Production & Storage Research Center, Korea Institute of Energy Research) ;
  • Kim, Jeong-Keun (Hydrogen Production & Storage Research Center, Korea Institute of Energy Research) ;
  • Hwang, Gab-Jin (Hydrogen Production & Storage Research Center, Korea Institute of Energy Research) ;
  • Moon, Il-Sik (Dep. Chemical Engineering Suncheon National University)
  • 이상호 (한국에너지기술연구원, 수소.연료전지연구본부, 수소제조.저장연구센터) ;
  • 홍성대 (한국에너지기술연구원, 수소.연료전지연구본부, 수소제조.저장연구센터) ;
  • 김정근 (한국에너지기술연구원, 수소.연료전지연구본부, 수소제조.저장연구센터) ;
  • 황갑진 (한국에너지기술연구원, 수소.연료전지연구본부, 수소제조.저장연구센터) ;
  • 문일식 (순천대학교 화학공학과)
  • Published : 2007.12.15
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Abstract

An experimental study on scale-up of Electro-electrodialysis(EED) to increase the efficiency of HI decomposition section in the IS(Iodine-Sulfur) process was carried out. The EED stack extends the effective area of the membrane to 20 times of that formerly used in a single EED unit cell. The experiment was carried out using HIx solution($HI:H_2O:I_2=1:8.4{\sim}9:1.85{\sim}1.9$) at $100^{\circ}C$ and various solution flow rates of 20, 30, 40 and 50 cc/min. The increased HI molality in catholyte after one-pass throughout from the EED stack was 3 mol/kg-$H_2O$, 2.2 mol/kg-$H_2O$, 2 mol/kg-$H_2O$ and 1.37 mol/kg-$H_2O$ at 20, 30, 40 and 50 cc/min, respectively. These values satisfied the target of HI molality(the increase of HI molality: 2 mol/kg-$H_2O$) in the IS process for hydrogen production of 20 L/hr.

Keywords

References

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