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Inorganic fiber ultrahigh temperature composite filtering material

A technology of inorganic fiber and composite filtration, which is applied in the direction of filtration separation, membrane filter, chemical instruments and methods, etc. It can solve the problems of not easy to bend, limit the filtration wind speed, and difficult to clean dust, etc., to ensure high temperature resistance and corrosion resistance Long-lasting, heat-resisting effect

Inactive Publication Date: 2019-01-04
湖北亿玛汽车电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional filter materials are basically manufactured by needle-punching method. Due to the smooth appearance and poor cohesion between traditional pure basalt or ceramic fiber felts, the peeling strength of needle-punched felts is too low, and "flying felt" appears. The phenomenon of detachment from the base cloth not only affects the service life of the needle felt, but also limits the improvement of the filtration wind speed
Stainless steel fibers are pure metal fiber felts, which are hard, not easy to bend, and difficult to clean; ceramic sintered filter materials are not easy to popularize due to their high cost and difficulty in self-cleaning.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] An inorganic fiber ultra-high temperature composite filter material, including a mixed fiber filter material formed of inorganic fibers and metal fibers, wrapped with a polytetrafluoroethylene film layer on the outside, and the ratio of the inorganic fibers to the metal fibers is 1:0.1.

[0021] The inorganic fibers are glass fibers.

[0022] The metal fiber is aluminum oxide fiber.

[0023] The polytetrafluoroethylene film layer is coated by immersing and aerating the polytetrafluoroethylene dispersion.

[0024] The formula of the polytetrafluoroethylene dispersion is as follows: 11 parts of polytetrafluoroethylene, 2 parts of anionic fluorocarbon surfactant, 30 parts of solvent, 2 parts of dispersant, and 4 parts of emulsifier.

[0025] The anionic fluorocarbon surfactant adopts perfluoroalkyl carboxylic acid.

[0026] The solvent is ethanol aqueous solution, and the ethanol content in the ethanol aqueous solution is 85%.

[0027] The dispersant uses polyethylene w...

Embodiment 2

[0030] An inorganic fiber ultra-high temperature composite filter material, including a mixed fiber filter material formed of inorganic fibers and metal fibers, wrapped with a polytetrafluoroethylene film layer on the outside, and the ratio of the inorganic fibers to the metal fibers is 1:0.3.

[0031] The inorganic fibers are glass-ceramic fibers.

[0032] The metal fiber adopts aluminum oxide fiber

[0033] The polytetrafluoroethylene film layer is coated by immersing and aerating the polytetrafluoroethylene dispersion.

[0034] The formula of the polytetrafluoroethylene dispersion is as follows: 15 parts of polytetrafluoroethylene, 4 parts of anionic fluorocarbon surfactant, 40 parts of solvent, 5 parts of dispersant, and 7 parts of emulsifier.

[0035] The anionic fluorocarbon surfactant adopts perfluoroalkoxy carboxylic acid.

[0036] The solvent is ethanol aqueous solution, and the ethanol content in the ethanol aqueous solution is 100%.

[0037] The dispersant is eth...

Embodiment 3

[0040] An inorganic fiber ultra-high temperature composite filter material, including a mixed fiber filter material formed of inorganic fibers and metal fibers, wrapped with a polytetrafluoroethylene film layer on the outside, and the ratio of the inorganic fibers to the metal fibers is 1:0.2.

[0041] The inorganic fiber is one of glass fiber, ceramic fiber or a mixture of ceramic fiber and glass fiber.

[0042] The ratio of the ceramic fiber to the glass fiber mixture is 1:1.5.

[0043] The metal fibers are titanium steel fibers.

[0044] The polytetrafluoroethylene film layer is coated by immersing and aerating the polytetrafluoroethylene dispersion.

[0045] The formula of the polytetrafluoroethylene dispersion liquid is as follows: 13 parts of polytetrafluoroethylene, 3 parts of anionic fluorocarbon surfactant, 35 parts of solvent, 3 parts of dispersant, and 4 parts of emulsifier.

[0046] The anionic fluorocarbon surfactant adopts perfluoroalkyl carboxylic acid.

[00...

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PUM

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Abstract

The invention discloses an inorganic fiber ultrahigh temperature composite filtering material. The material comprises a blended fiber filtering material formed by inorganic fiber and metal fiber, thefiltering material is wrapped with a polytetrafluoroethylene film layer, and the ratio of the inorganic fiber to metal fiber is 1:(0.1-0.3). The action of inner and outer bonding connection is adoptedfor ensuring the high-temperature resistance performance of filtration and the stability of the inorganic fiber and the metal fiber.

Description

technical field [0001] The invention belongs to the technical field of filter materials, and in particular relates to an inorganic fiber ultra-high temperature composite filter material. Background technique [0002] At present, the filter materials for high-temperature flue gas mainly include aramid, PPS (polyphenylene sulfide), P84 (polyimide), PTFE (polytetrafluoroethylene), etc. Inorganic fibers such as basalt fibers, ceramic fibers, and stainless steel fibers are used for ultra-high temperature flue gas dust removal above 600 °C. However, conventional filter materials are basically manufactured by needle-punching method. Due to the smooth appearance and poor cohesion between traditional pure basalt or ceramic fiber felts, the peeling strength of needle-punched felts is too low, and "flying felt" appears. The phenomenon of detachment from the base cloth not only affects the service life of the needle felt, but also limits the improvement of the filtration wind speed. S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B01D39/20
CPCB01D39/14B01D39/2017B01D39/2041B01D39/2082B01D2239/0636
Inventor 柯卓英
Owner 湖北亿玛汽车电子有限公司
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