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Study on Scale-up of Electro-Electrodialysis [EED] Cell for HI Concentration  

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)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.18, no.4, 2007 , pp. 458-463 More about this Journal
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
IS(Iodine-Sulfur) process; electro-electrodialysis; HI concentration; hydrogen production; azeotrope composition;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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