High-temperature-resistant aramid filter cloth capable of facilitating dust removing and preparation method thereof

A high-temperature-resistant and dust-cleaning technology, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve problems such as the drop in the output of the asphalt mixing plant, the unfavorable dust removal by the dust collector, and the rough surface of the needle-punched felt. Small dust holding capacity, increasing dust stripping rate and improving smoothness

Active Publication Date: 2016-06-29
SUZHOU HUILONG PURIFYING FILTER
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Problems solved by technology

In the field of high-temperature dust removal, high-temperature-resistant aramid fiber needle-punched felt is often used as the filter medium. Organic chemical components and moisture will be quickly hydrolyzed and damaged, and because aramid fiber is a thermosetting fiber, it can only be singed but not calendered, resulting in rough surface of needle felt after singe

Method used

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  • High-temperature-resistant aramid filter cloth capable of facilitating dust removing and preparation method thereof
  • High-temperature-resistant aramid filter cloth capable of facilitating dust removing and preparation method thereof

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Embodiment

[0024] A kind of aramid high-temperature-resistant filter cloth with easy-cleaning function of this embodiment includes a base cloth layer 1 made of 100% PTFE reinforced base cloth in the middle, and the upper surface of the base cloth layer 1 is provided with microfiber Dust surface layer 2, the lower surface of the base fabric layer 1 is provided with a breathable air purification surface layer 3, the superfine fiber dust facing surface layer 2 is composed of NOMEX fiber and meta-aramid fiber netting, and the breathable air purification surface layer 3 is composed of 2D The base fabric layer 1, the superfine fiber dust surface layer 2 and the air-permeable air purification surface layer 3 are needle-punched into a felt, and the surface of the felt has a PTFE emulsion impregnated layer 4, and the impregnated layer contains talcum powder group point.

[0025] Among them, the two components of the microfiber dust-resisting surface layer are composed of dog-bone ultrafine denier...

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Abstract

The invention discloses a high-temperature-resistant aramid filter cloth capable of facilitating dust removing and a preparation method thereof. The filter cloth comprises a middle base cloth layer, a superfine fiber dust-facing surface layer formed by NOMEX fibers and meta-aramid fibers in a net laying mode, a breathable air-purifying surface layer formed by meta-aramid fibers in a net laying mode, and a PTFE emulsion dipping layer containing high-fineness talcum powder. NOMEX fibers and meta-aramid fibers are used for forming a base material in a laying mode, and then the base material and corrosion-resistant and oxidation-resistant PTFE base cloth are combined and felted to prepare the filter cloth, so that the strength and filter precision of the filter cloth are improved; meanwhile, PTFE emulsion containing high-fineness talcum powder is used for performing dipping treatment in the preparation process, so that the surface of the filter cloth has certain hydrophobicity, and the acid and alkaline corrosion resistance of the filter cloth is improved; moreover, the surface smoothness of the filter cloth is improved, the dust removing rate is increased, the dust holding capacity is small, and dust removing is easier.

Description

technical field [0001] The invention relates to the field of waste gas treatment, in particular to an aramid composite high-temperature-resistant filter cloth with an easy-to-clean function and a preparation method thereof. Background technique [0002] The bag filter is a high-efficiency dry dust collector, which relies on a filter bag made of fiber filter material to purify the gas through the dust layer formed on the surface of the filter bag. For almost all dust in general industry, its dust removal efficiency may reach more than 99%. In the field of high-temperature dust removal, high-temperature-resistant aramid fiber needle-punched felt is often used as the filter medium. Organic chemical components and moisture will be quickly hydrolyzed and damaged, and because aramid fiber is a thermosetting fiber, it can only be singed but not calendered, resulting in rough surface of needle felt after singeing, especially in asphalt concrete mixing dust collector A large amount...

Claims

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Application Information

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IPC IPC(8): B01D39/08B32B5/06B32B5/30B32B5/28B32B5/26B32B27/08B32B33/00
CPCB01D39/08B01D2239/0609B01D2239/0659B32B5/06B32B5/26B32B5/30B32B27/08B32B33/00B32B2250/04B32B2255/02B32B2260/04B32B2260/046
Inventor 徐彪
Owner SUZHOU HUILONG PURIFYING FILTER
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