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| Pulse-jet Cleaning Performance of Filter Medias with Different Forming Methods for Fine Particulate Dust |
| Received:August 14, 2025 Revised:October 08, 2025 |
| DOI：10.11980/j.issn.0254-508X.2026.03.006 |
| Key Words:fine particulate dust filter media air filtration pulse-jet cleaning performance |
| Author Name | Affiliation | Postcode | | LI Mengyao* | 1School of Light Industry and Engineering, South China University of Technology, Guangzhou,Guangdong Province, 510640 | 510640 | | TANG Min | 1School of Light Industry and Engineering, South China University of Technology, Guangzhou,Guangdong Province, 510640 | 510640 | | PENG Ningjian | 2China North Vehicle Research Institute, Beijing, 100071 | 100071 | | SONG Qiang | 1School of Light Industry and Engineering, South China University of Technology, Guangzhou,Guangdong Province, 510640 | 510640 | | LIANG Yun* | 1School of Light Industry and Engineering, South China University of Technology, Guangzhou,Guangdong Province, 510640 | 510640 |
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| Abstract:The pulse-jet cleaning performance of engine air filters is a critical factor affecting their service life. Current test standards primarily employ ISO 12103-1 A2 test dust, which inadequately reflects material performance in environments with high fine dust content, such as desert or mining areas. To address this, this study selected three types of fibrous filter medias with different forming methods (wet-laid filter media, melt-blown nonwoven composite media, and electrospun composite media). Their dust-holding capacity and pulse-jet cleaning performance were compared under different dust concentrations and face velocities, using two dust types with distinct particle size distributions: 0~3 μm Arizona Test Dust (0-3 ATD dust, 0.1~2 μm) and A2 dust (1~10 μm). The results showed that reducing the face velocity or dust concentration improved the pulse-jet cleaning performance of the filter medias, and the face velocity had a more significant impact. At a dust concentration of 1.0 g/m³, when the face velocity was reduced from 11.1 cm/s to 6.7 cm/s, the total 10 pulse-jet cleaning cycles duration of the electrospun composite media for fine 0-3 ATD dust increased from 518 s to 2 422 s. This was approximately 1.9 and 2.8 times that of the wet-laid media and melt-blown composite media, respectively, while the dust stripping rate consistently remained above 85%. Under the conditions of a dust concentration of 1.0 g/m³ and a face velocity of 11.1 cm/s, the average dust stripping rate of the three filter medias for A2 dust during the 10 cycles was similar (77%~78%). However, due to the tendency of fine particles to embed deeper into the fiber matrix, which making them harder to dislodge, the cleaning duration for 0-3 ATD dust decreased by 66%~80%. Notably, the electrospun composite media exhibited an average dislodgement efficiency of approximately 68% for 0-3 ATD dust, significantly higher than that of the wet-laid media (38%) and melt-blown nonwoven composite media (15%), demonstrating its adaptability for pulse-jet cleaning of fine dust particles. |
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