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过程工程学报 ›› 2023, Vol. 23 ›› Issue (3): 430-437.DOI: 10.12034/j.issn.1009-606X.222064

• 研究论文 • 上一篇    下一篇

玻纤滤材结构特性及过滤性能的数值模拟研究

游天乐， 潘政源， 陆丽莉， 唐敏， 梁云*
  

  1. 华南理工大学轻工科学与工程学院，广东 广州 510640
  • 收稿日期:2022-03-01 修回日期:2022-05-17 出版日期:2023-03-28 发布日期:2023-03-28
  • 通讯作者: 梁云 liangyun@scut.edu.cn
  • 作者简介:游天乐，硕士研究生，主要从事过滤过程的数值模拟研究，E-mail: 202021028749@mail.scut.edu.cn；通讯联系人，梁云，研究员，研究方向为高性能纸基复合材料，E-mail: liangyun@scut.edu.cn

Numerical simulation study on structural characteristics and filtration performance of glass fiber filter media

Tianle YOU,  Zhengyuan PAN,  Lili LU,  Min TANG,  Yun LIANG*   

  1. School of Light Industry and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
  • Received:2022-03-01 Revised:2022-05-17 Online:2023-03-28 Published:2023-03-28

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摘要： 基于通量实验优化滤材的方法已经无法快速应对社会、工业对高性能滤材的需求，为了提高新型滤材的研制效率，迫切需要开展纤维滤材结构设计和过滤性能的模拟研究。以往的研究多集中在微米级尺度的纤维滤材模型，而鲜有以亚微米玻璃纤维滤材为对象的研究。本工作以实际多分散的亚微米玻璃纤维及玻纤滤材为基础，从玻璃纤维的表征、滤材的制备及其结构参数的确定，建立更加接近实际滤材结构的三维模型，充分对比了湿法成型工艺抄造的滤材性能与模拟结果的相关性，探究纤维结构模型和性能计算的数学模型对玻纤滤材性能预测的适用性。结果表明，滤材结构模型的平均孔径与实验测量结果趋势一致；过滤阻力和过滤效率比经验模型计算结果更接近于实验测量结果，3种滤材过滤效率实验测量值分别为60.5%, 99.1%, 99.96%，模拟计算结果分别为61%, 99.6%, 100%，两者误差小于1%。采用的滤材结构模型和计算性能的数学模型在玻纤滤材的性能模拟研究中具有较广的适用范围，这将为高性能玻纤滤材的研制提供一种高效的方法。

关键词: 空气过滤, 湿法成型, 亚微米纤维, 玻纤滤材, 数值模拟

Abstract: The filter media with high efficiency, low resistance and long life, is attracting more and more attention in the environmental research. To boost the efficiency of developing fiber filter media, simulation research on its structure design and filtration performance is needed, as the traditional methods based on a large amount of experiments are time-consuming. Previous researches of fiber filter media model were mainly focused on the micron scale and rarely involved at the submicron scale. Based on the actual multi-dispersed submicron glass fiber and glass fiber filter media, this work established a three-dimensional model closer to the actual filter media structure from the characterization of glass fibers, the fabrication of filter media and its given structural parameters. By comprehensively comparing the simulation results with the actual performance of the filter media made by wet-laid process, the model's applicability to predict the performance of glass fiber filter media was thoroughly investigated. The experimental results showed: the average pore size of the filter model aligned with the actual experimental results; the calculated filtration resistance and filtration efficiency were closer to the experimental measurement results than those of the empirical model; the error in filtration efficiency was less than 1% (the simulated results of three filter media were 61%, 99.6% and 100% respectively, against the measured results of 60.5%, 99.1% and 99.96% of their actual samples). The structure model of the filter media and the mathematical model of the calculation performance have a wide range of application in the performance simulation study of the glass fiber filter media, which will provide a more specific and effective solution for the modeling and performance simulation study of the high-performance glass fiber filter media as well as efficiently accelerating the filter development.

Key words: air filtration, wet-laid process, submicron fiber, glass fiber filter media, numerical simulation