JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Crystal Sinking Modeling for Designing Iodine Crystallizer in Thermochemical Sulfur-Iodine Hydrogen Production Process
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
  • Journal title : Korean Chemical Engineering Research
  • Volume 52, Issue 6,  2014, pp.768-774
  • Publisher : The Korean Institute of Chemical Engineers
  • DOI : 10.9713/kcer.2014.52.6.768
 Title & Authors
Crystal Sinking Modeling for Designing Iodine Crystallizer in Thermochemical Sulfur-Iodine Hydrogen Production Process
Park, Byung Heung; Jeong, Seong-Uk; Kang, Jeong Won;
  PDF(new window)
 Abstract
SI process is a thermochemical process producing hydrogen by decomposing water while recycling sulfur and iodine. Various technologies have been developed to improve the efficiency on Section III of SI process, where iodine is separated and recycled. EED(electro-electrodialysis) could increase the efficiency of Section III without additional chemical compounds but a substantial amount of from a process stream is loaded on EED. In order to reduce the load, a crystallization technology prior to EED is considered as an removal process. In this work, particle sinking behavior was modeled to secure basic data for designing an crystallizer applied to -saturated solutions. The composition of solution was determined by thermodynamic UVa model and correlation equations and pure properties were used to evaluate the solution properties. A multiphysics computational tool was utilized to calculate particle sinking velocity changes with respect to particle radius and temperature. The terminal velocity of an particle was estimated around 0.5 m/s under considered radius (1.0 to 2.5 mm) and temperature (10 to ) ranges and it was analyzed that the velocity is more dependent on the solution density than the solution viscosity.
 Keywords
Hydrogen Production;SI Process;Crystallizer;Iodine;Terminal Velocity;
 Language
Korean
 Cited by
 References
1.
IAEA-TECDOC-1085, "Hydrogen as an Energy Carrier and Its Production by Nuclear Power," IAEA(1999).

2.
Funk, J. E., "Thermochemical Hydrogen Production: Past and Present," Int. J. Hydrog. Energy, 26, 185-190(2001). crossref(new window)

3.
Brown, L. C., Besenbruch, G. E., Lentsch, R. D., Schultz, K. R., Funk, J. F., Pickard, P. S., Marshall, A. C. and Showalter, S. K., "High Efficiency Generation of Hydrogen Fuels using Nuclear Power," GA-A24285(2003).

4.
Norman, J. H., Besenbruch, G. E. and O'Keefe, D. R., "Thermochemical Water-Splitting for Hydrogen Generation," GRI-80/0105(1981).

5.
Roth, M. and Knoche, K. F., "Thermochemical Water Splitting through Direct HI-decomposition from $H_2O/HI/I_2$ Solutions," Int. J. Hydrog. Energy, 14, 545-549(1989).

6.
Berndhaeuser, C. and Knoche, K. F., "Experimental Investigations of Thermal HI Decomposition from $H_2O-HI-I_2$ Solutions," Int. J. Hydrog. Energy, 19, 239-244(1994). crossref(new window)

7.
Norman, J. H., Besenbruch, G. E., Brown, L. C., O'Keefe, D. R. and Allen, C. L., "Thermochemical Water-Splitting Cycle, Bench-Scale Investigations, and Process Engineering," GA-A16713(1982).

8.
Hwang, G.-J., Onuki, K., Nomura, M., Kasahara, S. and Kim, J.-W., "Improvement of the Thermochemical Water-Splitting IS (iodine-sulfur) Process by Electro-Electrodialysis," J. Membr. Sci., 220, 129-136(2003). crossref(new window)

9.
Murphy, J. E. and O'Connell, J. P., "A Properties Model of the $HI-I_2-H_2O-H_2$ System in the Sulfur-Iodine Cycle for Hydrogen Manufacture," Fluid Phase Equilib., 288, 99-110(2010). crossref(new window)

10.
Parsly, L. F., "Design Considerations of Reactor Containment Spray Systems - Part IV. Calculation of Iodine-Water Partitioning Coefficients," ORNL-TM- 2412, Part IV(1970).

11.
Yaws, C. L., Thermophysical Properties of Chemicals and Hydrocarbons, William Andrew(2008).

12.
Lide, D. R., CRC Handbook of Chemistry and Physics, 87th ed., CRC Press(2006).

13.
http://www.cheric.org/research/kdb/.

14.
Poling, B. E., Prausnitz, J. M. and O'Connell, J. P., The Properties of Gases and Liquids, 5th ed. McGraw-Hill(2001).