Effect of structure of reinforced fiber on field distribution characteristics in ionic membrane

LI Youping; ZHANG Li; WANG Xuejun; XU Guangwen; LIU Guozhen; LIU Yunyi

doi:10.11949/j.issn.0438-1157.20180397

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Effect of structure of reinforced fiber on field distribution characteristics in ionic membrane

更新时间：2025-12-10

- Effect of structure of reinforced fiber on field distribution characteristics in ionic membrane
- CIESC Journal Issue 10, Pages: 4167-4176(2018)
- 作者机构：
  
  1. 沈阳化工大学化学工程学院,辽宁,沈阳,110142
  2. 含氟功能膜材料国家重点实验室,山东,淄博,256401
  3. 中国科学院过程工程研究所多相复杂系统国家重点实验室,北京,100190
  4. 蓝星沈阳轻工机械设计研究所,辽宁,沈阳,110015
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180397
  CLC： Q035TQ021.4
- Online First：05 October 2018，
  
  Published：05 October 2018
- 稿件说明：
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LI Youping, ZHANG Li, WANG Xuejun, et al. Effect of structure of reinforced fiber on field distribution characteristics in ionic membrane[J]. CIESC Journal, 2018, (10): 4167-4176.
DOI：

LI Youping, ZHANG Li, WANG Xuejun, et al. Effect of structure of reinforced fiber on field distribution characteristics in ionic membrane[J]. CIESC Journal, 2018, (10): 4167-4176. DOI： 10.11949/j.issn.0438-1157.20180397.

摘要

为研究加强筋结构对离子膜内场分布特性的影响，采用多孔介质渗流模型、稀物质传递及二次电流分布模型，对电场条件下含加强筋的离子膜内物质迁移过程进行了数值模拟，得到了物质在膜内的对流速度、浓度及电流密度分布，考察了加强筋形状、间距及成网方式对场分布特性的影响。利用拍照法和图像处理技术对电解后膜表面离子浓度进行了测量，实验结果与模拟结果吻合良好。结果表明，在加强筋所围成的空隙中心处对流速度最大；越靠近加强筋，速度越低，浓度和电流密度越大；采用正交型加强筋，膜内具有较高的对流速度和电流密度；加强筋间距越大，电流密度越低，分布越均匀；采用椭圆形长轴迎流的加强筋时，膜内具有最高的电流密度，但其电流密度分布最不均匀。

Abstract

To investigate the influence of the structure of the reinforced fibers on field distribution in ionic membrane

the matter migration processes in the ion-exchange membrane (IEM) with the reinforced fibers in the presence of the electric field were simulated by using the percolation flow model in porous media

the transport of diluted species model and the secondary current distribution model. The convective velocity

concentration and current density in the ionic membrane were obtained. The effects of the shape

pitch and the mode of network of the reinforced fibers on the field distribution were studied. The ion concentration on the surface of the membrane after electrolysis was measured by photography and image processing technology. The experimental results were in good agreement with the simulation results. The results show that

the convective velocity at the central region encircled by the reinforced fibers is the highest. The closer to the reinforced fibers

the lower the velocity

the greater the concentration and the current density. Higher velocity and current density can be obtained in the ionic membrane by using the orthogonal reinforced fibers. The larger the distance between the ribs

the lower the current density

the more uniform the distribution. The highest value and the most inhomogeneous distribution of the current density can be obtained by using the ellipse reinforced fibers with its major axis vertical to the flow.

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