HI Concentration of HIx(HI-H2O-I2)Solution in Iodine-Sulfur Water-Splitting Cycle by Electro-Electrodialysis

陈崧哲; 张平; 姚桃英; 王来军; 徐景明

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HI Concentration of HI_x(HI-H₂O-I₂)Solution in Iodine-Sulfur Water-Splitting Cycle by Electro-Electrodialysis

更新时间：2025-12-08

- HI Concentration of HI_x(HI-H₂O-I₂)Solution in Iodine-Sulfur Water-Splitting Cycle by Electro-Electrodialysis
- Vol. 42, Issue 2, Pages: 252-255(2008)
- 作者机构：
  
  清华大学核能与新能源技术研究院,北京,100084
- 作者简介：
- 基金信息：
- DOI：
  CLC： TL99
- Online First：10 February 2008，
  
  Published：2008
- 稿件说明：
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陈崧哲, 张平, 姚桃英, et al. HI Concentration of HI_x(HI-H₂O-I₂)Solution in Iodine-Sulfur Water-Splitting Cycle by Electro-Electrodialysis[J]. 2008, 42(2): 252-255.
DOI：

陈崧哲, 张平, 姚桃英, et al. HI Concentration of HI_x(HI-H₂O-I₂)Solution in Iodine-Sulfur Water-Splitting Cycle by Electro-Electrodialysis[J]. 2008, 42(2): 252-255. DOI：

摘要

为应对碘硫循环制氢工艺中浓缩HI的要求

采用石墨、活性炭纤维布为电极

Nafion 117CS为质子交换膜构成电解渗析(EED)池

对Bunsen反应HI

相的模拟溶液进行了HI的EED浓缩实验.实验结果表明

EED操作能够对HI起到有效的浓缩作用.在所考察的2.5～20.0 A/dm

电流密度范围内未发生浓差极化

随电流密度的提高

阴极液HI浓缩速率逐渐增大.在连续运行实验中

当电流密度为20.0 A/dm

时

对初始m(HI)为8.8 mol/kg的HI-H

O-I

溶液进行2 h的EED处理

即可使m(HI)超越恒沸点.采用石墨电极时的浓缩效果优于采用活性炭纤维布

但采用后者时EED槽电压明显低于前者

可使EED操作能耗有效降低.提高操作温度会使HI的浓缩效率下降

但可显著降低槽电压.

Abstract

Nafion 117CS membrane and electrodes of graphite or activated carbon fiber cloth are adopted to establish electro-electrodialysis(EED)apparatus for concentration of hydriodic acid in HI

phase of IS cycle. The effects of different electrodes

current density

operating time and temperature on the efficiency of EED process are investigated. The concentration effect of HI is strengthened with the increasing current densities in range of 5-20 A/dm

. When graphite plates are adopted as electrodes

the molality of HI in catholyte increases faster than activated carbon fiber cloth to lead to a quite low cell

voltage. The increasing EED temperature brings out a lower efficiency of HI concentration

while significantly drops the cell voltage.

关键词

Keywords

references

张平,徐景明.核能制氢的效率分析[J].科技导报,2006,24(6):18-21.

ZHANG Ping, XU Jingming. Efficiency estimation of nuclear hydrogen production [J]. Science & Technology Review, 2006, 24(6): 18-21.

ONUKI K, HWNAG G J, Shimizu S. Electrodialysis of hydriodic acid in the presence of iodine [J]. J Membrane Science, 2000,175:171-179.

HWANG G J,ONUKI K, NOMURA M. et al.Improvement of the thermochemical water-splitting IS(iodine-sulfur)process by electro-electrodialysis[J]. Journal of Membrane Science,2003,220:129-136.

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