反电渗析法海洋盐差电池的结构优化与能量分析

doi:10.11949/j.issn.0438-1157.20141805

化工学报 ›› 2015, Vol. 66 ›› Issue (5): 1919-1924.DOI: 10.11949/j.issn.0438-1157.20141805

反电渗析法海洋盐差电池的结构优化与能量分析

邓会宁¹, 田明², 杨秀丽², 何云飞¹

1 河北工业大学海洋科学与工程学院, 天津 300130;
2 河北工业大学化工学院, 天津 300130

收稿日期:2014-12-05 修回日期:2015-01-15 出版日期:2015-05-05 发布日期:2015-05-05
通讯作者: 邓会宁
基金资助:
国家自然科学基金项目(20906017);河北省自然科学基金项目(B2013202087)。

Structure optimization and energy analysis of reverse electrodialysis to recover energy of oceanic salinity gradient

DENG Huining¹, TIAN Ming², YANG Xiuli², HE Yunfei¹

1 School of Marine Science and Engineering, Hebei University of Technology, Tianjin 300130, China;
2 School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, China

Received:2014-12-05 Revised:2015-01-15 Online:2015-05-05 Published:2015-05-05
Supported by:
supported by the National Natural Science Foundation of China (20906017) and Natural Science Foundation of Hebei Province (B2013202087).

摘要/Abstract

摘要： 盐差能是存在于海水和淡水之间或者两种含盐浓度不同的海水之间的化学位差能,是以化学能形态存在的海洋能。反电渗析法是一种利用盐差能发电的方法,相比于其他方法,具有更高的能量密度。但是,目前对反电渗析法盐差电池的研究均限于小尺寸膜堆,放大实验发现功率密度显著降低,对过程的能量效率更少有分析。因此,对反电渗析法海洋盐差能利用过程进行数学模拟,对膜堆进行结构优化,研究在不同的结构参数下反电渗析盐差电池的功率密度和能量效率。结果表明,减小隔板厚度可以很大程度地提高反电渗析过程的功率密度和能量效率,增加RED装置的长度会获得较高的能量效率,但是平均功率密度有所降低。

关键词: 反电渗析, 膜, 数学模拟, 再生能源

Abstract: Salinity gradient power is a kind of chemical potential energy which exists between sea water and fresh water or water with different salt concentrations. Reverse electrodialysis (RED) is a process that transfers the salinity gradient to energy. Compared with other process, RED shows higher energy density. However, the studies on RED are limited to small membrane stacks. Experiments with a larger setup show that power density decreases significantly. Moreover, there is little research on the energy efficiency analysis of the RED process. In this paper, the energy transfer process of RED was simulated mathematically and the structure of the membrane stack was optimized. The power density and energy efficiency of RED at different structural parameters were also analyzed. Decreasing the thickness of the compartment could enhance both power density and energy efficiency greatly. Increasing flow length could result in higher energy efficiency, but average power density would decrease.

Key words: reverse electrodialysis, membranes, mathematical modeling, renewable energy

中图分类号:

TQ152

邓会宁, 田明, 杨秀丽, 何云飞. 反电渗析法海洋盐差电池的结构优化与能量分析[J]. 化工学报, 2015, 66(5): 1919-1924.

DENG Huining, TIAN Ming, YANG Xiuli, HE Yunfei. Structure optimization and energy analysis of reverse electrodialysis to recover energy of oceanic salinity gradient[J]. CIESC Journal, 2015, 66(5): 1919-1924.

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反电渗析法海洋盐差电池的结构优化与能量分析

Structure optimization and energy analysis of reverse electrodialysis to recover energy of oceanic salinity gradient

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