Analysis of thermophysical property data of HIx components for I2 crystallizer design in sulfur-iodine process to produce hydrogen

• Published in: The Korean journal of chemical engineering Vol. 33; no. 3; pp. 986 - 996
• Main Authors: Park, Byung Heung, Kang, Kyoung-Soo, Kang, Jeong Won
• Format: Journal Article
• Language: English
• Published: New York Springer US 2016; 한국화학공학회
• Subjects: Biotechnology; Catalysis; Chemistry; Chemistry and Materials Science; Industrial Chemistry/Chemical Engineering; Materials Science; Separation Technology; Thermodynamics; 화학공학; Hydrogen Production; Hydrogen Iodide; SI Process; Thermophysical Properties; Iodine
• ISSN: 0256-1115; 1975-7220
• DOI: 10.1007/s11814-015-0212-x

I 2 crystallization could be a technical option in HI decomposition section of SI thermochemical water splitting process to increase process efficiency. Design of a crystallizer requires experimental data as well as corresponding equations for thermophysical properties of HI x solution, which is a named ternary solution of H 2 O, HI, and I 2 . However, so far, there are no available analyses on them. We collected experimental data and corresponding equations with temperature parameters and compared the equations with the data to analyze their accuracy and credibility. Thermal conductivity was updated in this work while keeping a structure of a corresponding equation. Relative deviations were estimated for liquid density, thermal conductivity, viscosity, and heat capacity and summarized with temperature for H 2 O, HI, and I 2 . Solution density and viscosity of binary H 2 O-HI solution were also analyzed with an empirical equation under a limited condition and with predictable methods exhibiting satisfactory consistency.