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High Temperature Phase Separation of $H_2SO_4-HI-H_2O-I_2$ System In Iodine-Sulfur Hydrogen Production Process  

Lee, Dong-Hee (Department of Fine Chemicals Engineering & Chemistry, Chungnam National University)
Lee, Kwang-Jin (Department of Fine Chemicals Engineering & Chemistry, Chungnam National University)
Kang, Young-Han (Department of Fine Chemicals Engineering & Chemistry, Chungnam National University)
Kim, Young-Ho (Department of Fine Chemicals Engineering & Chemistry, Chungnam National University)
Park, Chu-Sik (Korea Institute of Energy Research)
Hwang, Gab-Jin (Korea Institute of Energy Research)
Bae, Ki-Kwang (Korea Institute of Energy Research)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.17, no.4, 2006 , pp. 395-402 More about this Journal
Abstract
Iodine-sulfur(IS) hydrogenation production process consists of three sections, which are so called a Bunsen reaction section, a HI decomposition section and a $H_2SO_4$ decomposition section as a closed cycle. For highly efficient operation of a Bunsen reaction section, we investigated the phase separation characteristics of $H_2SO_4-HI-H_2O-I_2$ system into two liquid phases($H_2SO_4$-rich phase and $HI_x$-rich phase) in the high temperature ranges, mainly from 353 to 393 K, and in the $H_2SO_4/HI/H_2O/I_2$ molar ratio of $1/2/14{\sim}30/0.3{\sim}13.50$. The desired results for the minimization of impurities in each phase were obtained in conditions with the higher temperature and the higher $I_2$ molar composition. On the basis of the distribution of $H_2O$ to each phase, it is appeared that the affinity between $HI_x$ and $H_2O$ was more superior to that between $H_2SO_4$ and $H_2O$.
Keywords
iodine-Sulfur cycle; hydrogen production; bunsen reaction section; phase separation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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