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Preparation method of novel high temperature resistant glass fiber filtering material

A glass fiber and filter material technology, which is applied in the field of preparation of new high temperature resistant glass fiber filter materials, can solve the problems of over 300-400°C and large flue gas temperature fluctuations, and achieves the effects of low cost and simple preparation method.

Inactive Publication Date: 2019-01-15
ANHUI JIXI HUALIN FIBERGLASS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] From the point of view of the general industrial flue gas dust removal, the temperature resistance of glass fiber should generally be able to meet the requirements, but in some industrial fields, due to changes in process parameters, the flue gas temperature may fluctuate greatly, which may exceed 300 ° C, while some industrial sectors, such as cement For vertical kiln manufacturers, the flue gas at the kiln tail may exceed 300-400 °C, so it should require a higher level of temperature-resistant filter material

Method used

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  • Preparation method of novel high temperature resistant glass fiber filtering material
  • Preparation method of novel high temperature resistant glass fiber filtering material

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Experimental program
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Effect test

Embodiment 1

[0023] Such as figure 1 Shown: the preparation method of a kind of novel high temperature resistant glass fiber filter material of the present embodiment, as figure 1 The shown (1) is made of alkali-free glass fiber yarn (which can be produced by ordinary textile sizing agent) and processed into glass fiber filter material base cloth. (2) Carry out acid leaching treatment on the base cloth, using low concentration H 2 SO 4 , so that non-SiO in the fiber 2 Components are partially removed so as to reach 70% SiO2 content in the fiber. (3) Further, wash the base cloth with water after acid leaching to remove residual acid on the base cloth. (4) Dry the washed base cloth (or use a higher temperature for sintering to make the fiber skeleton structure tight). (5) Chemically treat the surface of the base cloth to make it a glass fiber filter material resistant to 400°C high temperature.

Embodiment 2

[0025] It is made of non-alkali glass fiber yarn (which can be produced by ordinary textile sizing) for textile processing or glass fiber filter material base cloth. The acid leaching treatment is carried out on the base cloth to partially remove the non-SiO2 components in the fibers, so that the SiO2 content in the fibers reaches 65%. Wash the base cloth after leaching with hydrochloric acid. Furthermore, the surface of the base cloth is chemically treated to make it a glass fiber filter material that can withstand high temperatures of 350°C.

Embodiment 3

[0027] A preparation method of a new type of high-temperature-resistant glass fiber filter material, which uses an alkali-free glass fiber fabric filter base cloth for acid leaching to remove part of the non-SiO2 in the fiber 2 components, so that SiO in fibers 2 The content is 68%, and after washing with water, the surface of the base cloth is chemically treated to obtain a new type of high temperature resistant glass fiber filter material.

[0028] Glass fiber materials are produced with common textile sizings, not textile-enhanced sizings.

[0029] When acid leaching is performed on the non-alkali glass fiber fabric filter base cloth, low-concentration acid is used for acid leaching at low temperature. , The acid leaching process is as follows: put the non-alkali glass fiber fabric filter base cloth into the acid solution, soak it at a low temperature for 45 minutes, take it out and drain it, and recycle the soaked solution for 4 times before discarding it.

[0030] When ...

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Abstract

The invention discloses a preparation method of a novel high temperature resistant glass fiber filtering material, and belongs to the field of novel high temperature resistant glass fiber filtering materials. Alkali free glass fiber (GF) fabric filtering base cloth is subjected to acid leaching to remove part of non-SiO2 components in the fibers, the SiO2 content of the fibers can reach 65% and 70% after acid leaching; the fibers can tolerate a temperature of 350 to 400 DEG C, then the fibers are subjected to a surface chemical treatment so as to enhance the wear resistance, bending resistance, and filtering performance of the base cloth; and the base cloth can be used to prepare the filter material with a high performance / cost ratio. The provided filtering material can tolerate a high temperature of 350 to 400 DEG C, the preparation method is simple, and the cost is low.

Description

technical field [0001] The invention relates to a preparation method of a novel high temperature resistant glass fiber filter material, which belongs to the technical field of new glass fiber filter material with high temperature resistance grade. Background technique [0002] Most of the industrial flue gas dust removal filter materials in the world use fiber filter materials, mainly organic fibers, such as PPS, P84 and PTFE, etc., and inorganic non-metallic fibers such as glass fibers (GF), and their properties are: PPS - temperature resistance 190 ~ 240 ℃, poor oxidation resistance; P84 - temperature 230 ~ 260 ℃, not resistant to hydrolysis, poor acid and alkali resistance; PTFE (fiber) - temperature 260 ~ 300 ℃, corrosion resistance, smoldering, but high price; And glass fiber - temperature resistance 260 ~ 300 ℃, corrosion resistance, high strength, good dimensional stability, high cost performance, but not wear-resistant or fold-resistant, it is the most widely used ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/06
CPCB01D39/06B01D2239/02
Inventor 王兆林
Owner ANHUI JIXI HUALIN FIBERGLASS