Basalt fiber high temperature compositing filter material

A technology of basalt fiber and composite filtration, which is applied in the fields of filtration and separation, chemical instruments and methods, separation methods, etc. It can solve the problems that heat energy cannot be recycled, can not play a filtering role, and increases equipment investment, so as to improve high temperature resistance. , prolong the service life and save energy

Inactive Publication Date: 2007-10-17
江苏正大森源集团
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing filter materials, under the working condition of ≥280°C, there is a problem that the filter material is burnt, softened, liquefied and carbonized, and finally cannot function as a filter
Moreover, due to the low upper limit of the working temperature of the exist

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The 45 long basalt fibers are combined into 45 basalt yarns. Then use ordinary weaving technology and use shuttleless loom to weave into 380 grams / M 2 The filter cloth or the base cloth for needle felt. Its tensile strength is: 1200N / 5cm, and the air permeability is 8m 3 / m 2 ·Min.

[0025] The filter cloth was immersed in a chemical solvent consisting of 5.2% silicon-oxygen inorganic resin, 3% graphite emulsion and the rest water at a speed of 1.6m / min, and then dried in a drying oven at 183°C for 40 minutes. The original tensile strength is: 1800N / 5cm, and the air permeability is 8m 3 / m 2 ·Min. After 48 hours in a test environment of 400°C, the tensile strength retention rate is greater than 80% of the original strength. Under the same test conditions, the strength retention rate is more than 150% higher than that of the glass fiber filter cloth of the same specification.

Embodiment 2

[0027] The 45 long basalt fibers are made into 45 basalt yarns as wefts and 45 long glass fibers are used as warp yarns through the warp and threading process of 45 basalt long fibers. They are woven into 500 grams / M using a shuttleless loom through ordinary weaving technology. 2 The filter cloth or the base cloth for needle felt. The tensile strength is: 2000N / 5cm, and the air permeability is 16m 3 / m 2 ·Min.

[0028] The filter cloth was immersed in a chemical solvent composed of 8.5% silicon-oxygen inorganic resin, 5% graphite emulsion and the rest water at a speed of 2.6m / min, and then dried in a drying oven at 210°C for 40 minutes. The original tensile strength is: 2800N / 5cm, and the air permeability is 15m 3 / m 2 ·Min. After 48 hours in a test environment of 400°C, the tensile strength retention rate is greater than 80% of the original strength. Under the same test conditions, the strength retention rate is more than 150% higher than that of the glass fiber filter cloth of t...

Embodiment 3

[0030] A yarn made of 45 long basalt fibers and 45 long glass fibers are mixed and twisted to form a 45-count blended composite yarn. The composite yarn is made into 520 g / M using an air jet loom. 2 The filter cloth or the base cloth for needle felt. Its tensile strength is: 2000N / 5cm, and the air permeability is 25m 3 / m 2 ·Min.

[0031] The filter cloth was immersed in a chemical solvent composed of 10% silicon-oxygen inorganic resin, 5.5% graphite emulsion and the rest water at a speed of 1.9m / min, and then dried in a drying oven at 195°C for 30 minutes. The original tensile strength is: 2600N / 5cm, and the air permeability is 20m 3 / m 2 ·Min. After 48 hours in a test environment at 500°C, the tensile strength retention rate is greater than 80% of the original strength. Under the same test conditions, the strength retention rate is more than 170% higher than that of the glass fiber filter cloth of the same specification.

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Abstract

The invention provides a basalt fibre high-temperature composite filter material. The high-temperature composite filter material is formed by weaving or needling, using the basalt fibre or the mixture of basalt fibre and other high temperature material which is one or more of the glass fibre, stainless-steel fibre and ceramic fibre. The invention can effectively improve the resistance to high temperature of filter material, extending the useful life, and also recycle heat energy, which saves energy source, has a excellent filter effect, and meet the need in the industry of industrial gases filter in high temperature.

Description

Technical field [0001] The invention relates to a filter material, in particular to a basalt fiber high-temperature composite filter material. Background technique [0002] Industrial fuel exhaust mostly contains a large amount of harmful substances, such as sulfides, nitrogen oxides, cyanides, polycyclic hydrocarbons, etc., once discharged into the atmosphere, it becomes a major source of air pollution. At present, for the filtration of industrial fuel exhaust gas, various fiber filter materials such as glass, polyester, aramid, PPS (polyphenylene sulfide), P84, polytetrafluoroethylene (PTFE), etc., or various base fabrics covered with PTFE are mainly used. Ethylene (PTFE) membrane filter material. Existing filter materials have the problem that the filter materials are burnt, softened, liquefied and carbonized under working conditions of ≥280°C, and ultimately cannot play a filtering role. Moreover, due to the low upper limit of the working temperature of the existing filter ma...

Claims

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Application Information

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IPC IPC(8): B01D39/08B01D39/06
Inventor 程士平
Owner 江苏正大森源集团
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