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| Numerical Simulation of the Effect of Bulk on the Structure and Properties of High Efficiency Filter Paper |
| Received:February 27, 2023 |
| DOI：10.11980/j.issn.0254-508X.2023.09.005 |
| Key Words:air filtration bulk filtration performance numerical simulation |
| Fund Project:中央高校基本科研业务费专项资金资助。 |
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| Abstract:In this study， numerical simulation software was used to establish filter paper models with different bulk， and the effect of bulk on the structure and properties of high efficiency filter paper was explored， to obtain the optimization scheme of filter paper with specific filter grade. The results showed that the average pore size and quality factor of filter paper increased with the increase of filter paper bulk， filtration resistance and filtration efficiency decreased with the increase of filter paper bulk， and the degree of change was different in different ranges of filter paper bulk. When the bulk was 1.25~5.00 cm3/g， it had significant effects on the filtration resistance and quality factors. When the bulk was 10.00~30.00 cm3/g， it had little influence on the filtration resistance and quality factor. When the bulk increased from 1.25 cm3/g to 30.00 cm3/g， the average pore size of the five filter paper models increased by about 500%， the filtration resistance decreased by 75%~80%， the filtration efficiency decreased by 0.23%~1.06%， and the quality factor increased by 113%~121%. With the decrease of fiber diameter， the effect of bulk on filter paper filtration resistance was more obvious， the effect on filtration efficiency was less， and the effect on quality factor first decreased and then increased. Therefore， the filter paper with higher quality factor could be prepared by increasing the bulk of filter paper， and the performance optimization of high efficiency filter paper could be realized. |
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