Experimental study on the purification of HIx phase in the iodine-sulfur thermochemical hydrogen production process

被引：14
作者：
Bai, Shangkui [1 ,2 ]
Wang, Laijun [1 ]
Han, Qi [2 ]
Zhang, Ping [1 ]
Chen, Songzhe [1 ]
Meng, Xianghai [2 ]
Xu, Jingming [1 ]
机构：
[1] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 102201, Peoples R China
[2] China Univ Petr, Coll Chem Engn, Beijing 102249, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2013年 / 38卷 / 01期
关键词：
Thermochemical hydrogen production; Iodine-Sulfur cycle; HIx phase; Purification; H2SO4; CYCLE;
D O I：
10.1016/j.ijhydene.2012.10.035
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Purification of hydriodic phase (HIx) plays an important role in avoiding the undesirable side reactions between HI and H2SO4 in the sulfur-iodine thermochemical cycle. In this paper, a series of experiments on HIx phase purification were conducted by means of a stirred reactor using N-2 as stripping gas. The effects of the iodine concentration, reaction temperature, and the striping gas flow rate on HIx phase purification were investigated systematically in terms of the conversion of H2SO4 and the reaction types during purification. It was observed that the iodine concentration played a significant role in dictating the reactions during purification. The quantitative analysis of the compositions of the initial and purified HIx phases showed that not only the conversion of H2SO4 was enhanced but also the side reactions were effectively impeded by increasing the iodine concentration, temperature and the stripping gas flow rate. Based on the experimental data, the suitable operating conditions for HIx phase purification were proposed. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
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页码：29 / 35
页数：7
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