受损膜包滤袋细颗粒排放的实验与数值研究

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology Pub Date : 2025-07-02 DOI:10.1016/j.apt.2025.104985

Weidong He , Yinghe Guo , Jingxian Liu , Xiaotong Zhou , Longji Hu , Keyi He , Xiuli Lin

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引用次数: 0

摘要

配备聚四氟乙烯（PTFE）膜包覆滤袋的袋式除尘器在控制工业粉尘方面是有效的。然而，在滤袋生产过程中，聚四氟乙烯膜容易发生物理损坏，导致损坏区域有明显的颗粒泄漏。在这项研究中，建立了一个模型来评估膜损伤对工业过程颗粒排放的影响。在模型中输入滤袋破坏面积、过滤效率、过滤速度分布等参数，即可计算滤袋下游的颗粒浓度。结合数值模拟的轴向气流分布数据大大提高了模型的精度。采用全尺寸PTFE膜包覆滤袋进行模型验证。结果表明，该模型能够准确预测膜损伤情况下颗粒排放浓度（0.3 ~ 5 μm尺寸范围）。此外，还评估了颗粒加载过程中膜损伤对排放物影响的持续时间。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Experimental and numerical Investigation of fine particle emissions from damaged Membrane-Coated filter bag

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Experimental and numerical Investigation of fine particle emissions from damaged Membrane-Coated filter bag

Baghouses equipped with Polytetrafluoroethylene (PTFE) membrane-coated filter bags are effective in controlling industrial dust. However, the PTFE membrane is prone to physical damage during filter bag production, leading to significant particle leakage from the damaged areas. In this study, a model was developed to assess the impact of membrane damage on the emission of industrial process particles. The particle concentration downstream of the filter bag can be calculated by inputting various parameters, including the membrane failure area, filtration efficiency, and filtration velocity distribution, into the model. Incorporating numerically simulated axial airflow distribution data substantially improved the model accuracy. The model validation was conducted using full-scale PTFE membrane-coated filter bags. Results indicated that the model achieved accurate predictions of particulate emission concentrations (0.3–5 μm size range) for cases involving membrane damage. Additionally, the duration of the effect of membrane damage on emissions during particle loading was evaluated.

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来源期刊

Advanced Powder Technology 工程技术-工程：化工

CiteScore

9.50

自引率

7.70%

发文量

424

审稿时长

55 days

期刊介绍： The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide. The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them. Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)