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 I2 from a process stream is loaded on EED. In order to reduce the load, a crystallization technology prior to EED is considered as an I2 removal process. In this work, I2 particle sinking behavior was modeled to secure basic data for designing an I2 crystallizer applied to I2-saturated HIx solutions. The composition of HIx 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 I2 particle radius and temperature. The terminal velocity of an I2 particle was estimated around 0.5 m/s under considered radius (1.0 to 2.5 mm) and temperature (10 to 50 °C) ranges and it was analyzed that the velocity is more dependent on the solution density than the solution viscosity.
| Original language | English |
|---|---|
| Pages (from-to) | 768-774 |
| Number of pages | 7 |
| Journal | Korean Chemical Engineering Research |
| Volume | 52 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2014 Jan 1 |
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ASJC Scopus subject areas
- Chemical Engineering(all)
Cite this
Crystal sinking modeling for designing iodine crystallizer in thermochemical sulfur-iodine hydrogen production process. / Park, Byung Heung; Jeong, Seong Uk; Kang, Jeong Won.
In: Korean Chemical Engineering Research, Vol. 52, No. 6, 01.01.2014, p. 768-774.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Crystal sinking modeling for designing iodine crystallizer in thermochemical sulfur-iodine hydrogen production process
AU - Park, Byung Heung
AU - Jeong, Seong Uk
AU - Kang, Jeong Won
PY - 2014/1/1
Y1 - 2014/1/1
N2 - 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 I2 from a process stream is loaded on EED. In order to reduce the load, a crystallization technology prior to EED is considered as an I2 removal process. In this work, I2 particle sinking behavior was modeled to secure basic data for designing an I2 crystallizer applied to I2-saturated HIx solutions. The composition of HIx 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 I2 particle radius and temperature. The terminal velocity of an I2 particle was estimated around 0.5 m/s under considered radius (1.0 to 2.5 mm) and temperature (10 to 50 °C) ranges and it was analyzed that the velocity is more dependent on the solution density than the solution viscosity.
AB - 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 I2 from a process stream is loaded on EED. In order to reduce the load, a crystallization technology prior to EED is considered as an I2 removal process. In this work, I2 particle sinking behavior was modeled to secure basic data for designing an I2 crystallizer applied to I2-saturated HIx solutions. The composition of HIx 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 I2 particle radius and temperature. The terminal velocity of an I2 particle was estimated around 0.5 m/s under considered radius (1.0 to 2.5 mm) and temperature (10 to 50 °C) ranges and it was analyzed that the velocity is more dependent on the solution density than the solution viscosity.
KW - Crystallizer
KW - Hydrogen production
KW - Iodine
KW - SI process
KW - Terminal velocity
UR - http://www.scopus.com/inward/record.url?scp=84916198161&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84916198161&partnerID=8YFLogxK
U2 - 10.9713/kcer.2014.52.6.768
DO - 10.9713/kcer.2014.52.6.768
M3 - Article
AN - SCOPUS:84916198161
VL - 52
SP - 768
EP - 774
JO - Korean Chemical Engineering Research
JF - Korean Chemical Engineering Research
SN - 0304-128X
IS - 6
ER -