Filter material for ultrafine dust filtering and preparation method thereof

Abstract

The invention relates to a filter material for the below 2mum ultrafine dust filtering and a preparation method thereof. Present filter materials have the defects of nonuniform permeability, easy stripping, short service life and the like, so the effect of the present filter materials applied to a bag filter and the cost performance are not ideal. The filter material for the ultrafine dust filtering provided in the invention is characterized in that: the filter material comprises the following three layers: an ultrafine denier fibrous layer (0.05-0.08 deniers) at the upper layer, a woven mesh layer at the middle layer, and a coarse denier fibrous layer (2.6-5 deniers) at the lower layer, wherein the weight part ratio of the ultrafine denier fibrous layer: the woven mesh layer: the coarse denier fibrous layer is 185-220:80-110:185-220. The preparation method allows the filtration accuracy of the filter material to be improved and the whole air permeability of the filter material to be improved.

Description

technical field [0001] The invention relates to an industrial filter material and a preparation method thereof, in particular to a filter material which can be used for filtering ultrafine dust below 2 μm and a preparation method thereof. Background technique [0002] With the rapid development of China's economy, people's awareness of environmental protection is increasing day by day, and they are paying more and more attention to their health. The bag filter is widely used in industrial production, and usually the treatment of flue gas and dust must use a high-efficiency bag filter. At present, the filter material of the bag filter is mostly made of 1.5 to 2.2 denier fiber to make a filter bag. Although it can filter the dust above 10 μm, it can only filter the dust below 5 μm. to realise. Because the film-coated filter material has defects such as large resistance, uneven air permeability, easy to cause film removal, and short service life, the application effect and co...

AI Technical Summary

Problems solved by technology

At present, the filter material of the bag filter is mostly made of 1.5-2.2 denier fiber to make the filter bag. Although it can filter the dust above 10 μm, it can only filter the dust below 5 μm. to fulfill

Due to the large resistance and uneven air permeability of the film-coated filter material, it is easy to cause defects such as film removal and short service life, so the application effect and cost performance in the bag filter are not very ideal.

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