Experiments of HI decomposition in Iodine-sulfur process = 요오드-황 공정에서 요오드화 수소 분해 실험

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We performed an experimental study on the HI concentration and decomposition in Iodine-Sulfur process for thermochemical hydrogen production, which is the most expensive and energy consuming stage. For breaking azeotropic restrain, a partial condensing type, perforated plate type, and packed bed distillation column are employed. A Liebig-type condenser was used for a partial condensing distillation test. The perforated plate distillation column has 40 mm diameter and 5 stages with 8 holes per a plate. The packed bed distillation column has 40 mm diameter and was filled with 5 mm glass beads. While no distillation methods are able to change azeotropic conditions at atmospheric pressure, HI decomposition took place in a reboiler at 480℃. The vapor-liquid equilibrium curve was obtained from the experiment with binary mixtures $(HI/H_2O)$ at atmospheric pressure. Almost pure $H_2O$ was evaporated at the lower temperature than 125℃, and above that temperature binary mixtures $(HI/H_2O)$ were evaporated until the leftover solution became HI acid of 0.157mol, which was an azeotropic concentration of HI. With a consideration of heat loss, enthalpy of vaporization at azeotropic condition was estimated as 1131 kJ/kg.
Advisors
No, Hee-Cheonresearcher노희천researcher
Description
한국과학기술원 : 원자력및양자공학과,
Publisher
한국과학기술원
Issue Date
2006
Identifier
255374/325007  / 020043360
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 원자력및양자공학과, 2006.2, [ vii, 50 p. ]

Keywords

decompostion; hydriodic acid; hydrogen iodide; Hydrogen; distillation; 열화학; 증류; 공비 혼합물; 요오드화 수소; 수소

URI
http://hdl.handle.net/10203/49509
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=255374&flag=dissertation
Appears in Collection
NE-Theses_Master(석사논문)
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