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Preparation method of high temperature resistant ceramic fiber gas filter material

A technology of high-temperature-resistant ceramics and filter materials, applied in the field of fine ceramic filtration, can solve problems such as large resistance, polluted environment, difficult regeneration, etc., and achieve the effect of low filtration resistance

Active Publication Date: 2011-02-09
HEFEI FOUND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, glass fiber bags are usually used for filtering high-temperature dusty gases, and glass fiber bags are resistant to high temperatures below 280°C, so flue gases above 280°C must be cooled by water spray before they can be filtered and purified. At the same time, glass fiber bags Perforation often occurs during use, which not only pollutes the environment, but also causes unnecessary waste of heat; while existing high-temperature-resistant porous ceramic filter materials have defects such as large resistance and difficult regeneration

Method used

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  • Preparation method of high temperature resistant ceramic fiber gas filter material
  • Preparation method of high temperature resistant ceramic fiber gas filter material
  • Preparation method of high temperature resistant ceramic fiber gas filter material

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0037] 1 part of aluminum silicate fiber is chopped and added to 100 parts of water glass solution, dried and fired to obtain a ceramic fiber support; then 1 part of calcium silicate is added to 100 parts of water glass solution to coat the ceramic fiber The surface of the support is dried and fired to obtain a ceramic fiber filter material, and the volume percentage of water glass and water in the water glass solution is 50%.

Embodiment 2

[0039] 1 part of alumina fiber is chopped and added to 100 parts of water glass solution, stirred and homogenized, vacuum formed, dried and fired to obtain a ceramic fiber support body; then 1 part of calcium silicate is added to 100 parts of water glass solution In, be coated on the surface of ceramic fiber support body, make ceramic fiber filter material through drying, firing, the volume percentage of water glass and water in the described water glass solution is 40%.

Embodiment 3

[0041] 50 parts of aluminum silicate fibers and 50 parts of alumina fibers are made into a ceramic fiber support with the same proportion and process as in Example 1; then 1 part of calcium silicate is added to 100 parts of water glass and the volume percentage of water is 40 % water glass solution, the ceramic fiber filter material was obtained with the same process as in Example 1.

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Abstract

The invention belongs to the field of fine ceramic filtering, particularly relates to a preparation method of a high temperature resistant ceramic fiber gas filter material. The preparation method comprises the following steps of: firstly, mixing ceramic fibers with a bonding solution according to the mass ratio of 0.5-1.5:100, uniformly stirring, forming, drying and sintering to obtain a ceramic fiber support body; mixing calcium silicate with the bonding solution according to the mass ratio of 0.5-1.5:100, and uniformly stirring; and applying a solution obtained by mixing the calcium silicate with the bonding solution to the surface of the ceramic fiber support body, drying and sintering to obtain a finished product; or forming and drying the solution obtained by mixing the calcium silicate with the bonding solution, and sintering to obtain a calcium silicate film, drying and sintering the ceramic fiber support body and the calcium silicate film to obtain a finished product. The high temperature resistant ceramic fiber gas filter material prepared by the method can resist the high temperature of 1,200 DEG C, has low filtration resistance and is easily regenerated.

Description

technical field [0001] The invention belongs to the field of fine ceramic filtration, and in particular relates to a preparation method of a high-temperature-resistant ceramic fiber gas filter material. Background technique [0002] At present, glass fiber bags are usually used for filtering high-temperature dusty gases, and glass fiber bags are resistant to high temperatures below 280°C, so flue gases above 280°C must be cooled by water spray before they can be filtered and purified. At the same time, glass fiber bags Perforation often occurs during use, which not only pollutes the environment, but also causes unnecessary waste of heat; while existing high-temperature-resistant porous ceramic filter materials have defects such as large resistance and difficult regeneration. Contents of the invention [0003] The object of the present invention is to provide a method for preparing a high-temperature-resistant ceramic fiber gas filter material. The high-temperature-resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/20
Inventor 金江魏兆锋严永青王德富曹伟
Owner HEFEI FOUND TECH
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