Abstract
Hydrogen production by the sulfur-iodine (SI) process, with an electrodialysis (ED) stack embedded in the HI decomposition section (SEC3) to concentrate HI in the HIx solution and overcome the pseudo-azeotrope, was conducted under pressurized conditions. The HIx solution of H2O/HI = 5.63-6.13 and I2/HI = 0.57-1.97 was supplied to the SEC3. HI gas was concentrated in a packed distillation column and decomposed over Pt/Al2O3. The experimental results of distillation column operation under different feed rates and HIx compositions are reported. The raffinate from the column showed a pseudo-azeotropic HIx mixture, as predicted in previous research. The dynamic responses of the ED stack were examined during the start-up period according to the HIx feed composition at the anode inlet. The ED voltage changed with the I2 concentration in the inlet flow. The proton transport number (t+) and electro-osmosis coefficient (β) were estimated for the ED stack during the operations. Hydrogen production ranged from 18.3 to 50 L/h, depending on the operating conditions and HIx feed composition.
| Original language | English |
|---|---|
| Pages (from-to) | 4560-4569 |
| Number of pages | 10 |
| Journal | International Journal of Hydrogen Energy |
| Volume | 41 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2016 Mar 2 |
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Keywords
- Electrodialysis
- Nuclear hydrogen
- Sulfur-iodine process
- Thermochemical cycle
- Water splitting
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Fuel Technology
- Condensed Matter Physics
- Energy Engineering and Power Technology
Cite this
Hydrogen production by SI process, with electrodialysis stack embedded in HI decomposition section. / Kang, Kyoung Soo; Kim, Chang Hee; Kim, Jong Won; Cho, Won Chul; Jeong, Seong Uk; Park, Chu Sik; Park, Byung Heung; Kang, Jeong Won; Bae, Ki Kwang.
In: International Journal of Hydrogen Energy, Vol. 41, No. 8, 02.03.2016, p. 4560-4569.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Hydrogen production by SI process, with electrodialysis stack embedded in HI decomposition section
AU - Kang, Kyoung Soo
AU - Kim, Chang Hee
AU - Kim, Jong Won
AU - Cho, Won Chul
AU - Jeong, Seong Uk
AU - Park, Chu Sik
AU - Park, Byung Heung
AU - Kang, Jeong Won
AU - Bae, Ki Kwang
PY - 2016/3/2
Y1 - 2016/3/2
N2 - Hydrogen production by the sulfur-iodine (SI) process, with an electrodialysis (ED) stack embedded in the HI decomposition section (SEC3) to concentrate HI in the HIx solution and overcome the pseudo-azeotrope, was conducted under pressurized conditions. The HIx solution of H2O/HI = 5.63-6.13 and I2/HI = 0.57-1.97 was supplied to the SEC3. HI gas was concentrated in a packed distillation column and decomposed over Pt/Al2O3. The experimental results of distillation column operation under different feed rates and HIx compositions are reported. The raffinate from the column showed a pseudo-azeotropic HIx mixture, as predicted in previous research. The dynamic responses of the ED stack were examined during the start-up period according to the HIx feed composition at the anode inlet. The ED voltage changed with the I2 concentration in the inlet flow. The proton transport number (t+) and electro-osmosis coefficient (β) were estimated for the ED stack during the operations. Hydrogen production ranged from 18.3 to 50 L/h, depending on the operating conditions and HIx feed composition.
AB - Hydrogen production by the sulfur-iodine (SI) process, with an electrodialysis (ED) stack embedded in the HI decomposition section (SEC3) to concentrate HI in the HIx solution and overcome the pseudo-azeotrope, was conducted under pressurized conditions. The HIx solution of H2O/HI = 5.63-6.13 and I2/HI = 0.57-1.97 was supplied to the SEC3. HI gas was concentrated in a packed distillation column and decomposed over Pt/Al2O3. The experimental results of distillation column operation under different feed rates and HIx compositions are reported. The raffinate from the column showed a pseudo-azeotropic HIx mixture, as predicted in previous research. The dynamic responses of the ED stack were examined during the start-up period according to the HIx feed composition at the anode inlet. The ED voltage changed with the I2 concentration in the inlet flow. The proton transport number (t+) and electro-osmosis coefficient (β) were estimated for the ED stack during the operations. Hydrogen production ranged from 18.3 to 50 L/h, depending on the operating conditions and HIx feed composition.
KW - Electrodialysis
KW - Nuclear hydrogen
KW - Sulfur-iodine process
KW - Thermochemical cycle
KW - Water splitting
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UR - http://www.scopus.com/inward/citedby.url?scp=85027942943&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2015.12.101
DO - 10.1016/j.ijhydene.2015.12.101
M3 - Article
VL - 41
SP - 4560
EP - 4569
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
SN - 0360-3199
IS - 8
ER -