Antistatic polytetrafluoroethylene filter bag

Abstract

The invention discloses an antistatic polytetrafluoroethylene filter bag. The filter bag comprises a bag head, a bag body and a bag bottom, wherein the bag head, the bag body and the bag bottom are made from a polytetrafluoroethylene filter material; the polytetrafluoroethylene filter material comprises basic cloth; the basic cloth is made from a polytetrafluoroethylene filament fiber and a stainless steel fiber by twisting and strand merging and through weaving warps with wefts; nonwoven layers symmetrically cover the upper surface and the lower surface of the basic cloth; the nonwoven layers are made from a polytetrafluoroethylene fiber or the polytetrafluoroethylene fiber and one or more of high-performance fibers of a polyphenylene sulfide fiber, a polyamide fiber, a polyamideimide fiber and the like by blending; a stainless steel metal net layer is sewed at a landing edge of the bag body. The filter bag prepared by the invention is resistant to a high temperature and corrosion, is excellent in electrical conductivity, further has the functions of enduringly removing static electricity and reducing fire hazards or explosions generated due to electrostatic sparks, and can be widely applied to high-temperature fire protection, explosion protection and dust removal in the fields of steel and iron smelting, refuse incineration, coal-fired power plants, cement, chemical engineering and the like.

Description

technical field [0001] The invention belongs to the field of high-temperature and corrosive flue gas purification, and relates to an antistatic polytetrafluoroethylene (PTFE) filter bag. Background technique [0002] Chemical fiber filter materials used in steel smelting, waste incineration, coal-fired power plants, cement, chemical industry and other industrial kiln dust control do not have anti-static function, and the smoke generated in some process sections is flammable and explosive. During the process, due to the friction between dust and dust, dust and filter material, a large amount of static electricity is likely to be generated. If the charge cannot be eliminated in time, fire or explosion accidents will occur. Due to its excellent high temperature resistance and corrosion resistance, PTFE material has been widely used in the field of high temperature smoke control, but at the same time, because it is a non-polar polymer, it is easy to generate static electricity d...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem of poor anti-static in existing filter materials, the purpose of the present invention is to provide an anti-static polytetrafluoroethylene filter bag, which is resistant to high temperature, corrosion, good electrical conductivity, and has long-lasting anti-static properties. It is suitable for the treatment of combustible and explosive smoke and dust in industrial kilns such as iron and steel smelting, garbage incineration, coal-fired power plants, cement, and chemical industry

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