Foamed ceramic high-temperature gas filter pipe and manufacturing technology thereof

A technology of foam ceramics and high-temperature gas, which is applied in the field of filter tubes, can solve the problems of large pressure loss of filter tubes, complex production processes, and high required conditions, and achieve energy saving, simple firing process, and low requirements for equipment and other conditions.

Inactive Publication Date: 2012-11-14
GUANGDONG SOUTHCHINA INST OF INDAL DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The silicon carbide high-temperature ceramic filter tube preparation method of the invention needs to be molded under the control of a molding pressure of 40-150 MPa, the production process is complicated, the required conditions are high, and the porosity of the prepared silicon carbide high-temperature ceramic filter tube is 30%-60%. , the pressure loss of the filter tube is too large during work, resulting in high energy consumption

Method used

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  • Foamed ceramic high-temperature gas filter pipe and manufacturing technology thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0074] A foam ceramic high temperature gas filter tube, which includes the following ingredients by weight: Al 2 0 3 10-30 parts, SiO 2 10-40 parts, 10-30 parts of SiC, 1-3 parts of nano-calcium carbonate, 5-10 parts of refractory clay, 1-2 parts of rectorite, 0.5-1.5 parts of sodium bentonite.

[0075] A preparation process of a foam ceramic high-temperature gas filter tube includes the following preparation steps:

[0076] (1) Use a mold to cut the polyurethane foam into sheets to obtain a carrier;

[0077] (2) Ingredients: Al 2 0 3 , SiO 2 , SiC, nano calcium carbonate, refractory clay, rectorite, sodium bentonite are fully mixed according to the proportion, and water is added to prepare a ceramic slurry;

[0078] (3) Molding: inject the ceramic slurry prepared in step (2) into the carrier prepared in step (1) to prepare a foam ceramic filter preform, which is dried and shaped;

[0079] (4) Preheating: preheat the foam ceramic filter preform prepared in step (3) under the condition...

Embodiment 2

[0087] A foam ceramic high temperature gas filter tube, which includes the following ingredients by weight: Al 2 0 3 10-20 parts, SiO 2 10-25 parts, 10-20 parts SiC, 1-2 parts nano-calcium carbonate, 5-8 parts refractory clay, 1-1.5 parts rectorite, 0.5-1 parts sodium bentonite.

[0088] A preparation process of a foam ceramic high-temperature gas filter tube includes the following preparation steps:

[0089] (1) Use a mold to cut the polyurethane foam prepared by the two-step method into a circular sheet to obtain a carrier;

[0090] (2) Ingredients: Al 2 0 3 , SiO 2 , SiC, nano calcium carbonate, refractory clay, rectorite, sodium bentonite are fully mixed, and water is added to prepare a ceramic slurry;

[0091] (3) Staleness: The ceramic slurry prepared in step (2) is allowed to stand for staleness for more than 48 hours;

[0092] (4) Molding: Inject the ceramic slurry prepared in step (3) into the carrier prepared in step (1) to prepare a foam ceramic filter preform, dry it, and f...

Embodiment 3

[0098] A foam ceramic high temperature gas filter tube, which includes the following ingredients by weight: Al 2 0 3 20-30 parts, SiO 2 25-40 parts, 20-30 parts SiC, 2-3 parts nano-calcium carbonate, 8-10 parts refractory clay, 1.5-2 parts rectorite, and 1-1.5 parts sodium bentonite.

[0099] The preparation process is the same as in Example 2, and will not be repeated here.

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Abstract

The invention relates to the technical field of a filter pipe, and in particular relates to a foamed ceramic high-temperature gas filter pipe and a manufacturing technology thereof. The foamed ceramic high-temperature gas filter pipe comprises 10-30 parts of Al2O3, 10-40 parts of SiO2, 10-30 parts of SiC, 1-3 parts of nano calcium carbonate, 5-10 parts of refractory clay, 1-2 parts of rectorite and 0.5-1.5 parts of sodium bentonite. According to the invention, the average aperture of the filter pipe is 20-250 mu m, the porosity can reach 75-85%, the gas permeability can be improved, and the pressure loss of the filter pipe in work is effectively reduced so that the energy consumption of a draught fan of a dust collector is reduced by 20-30% and the effect of saving energy is achieved; and the manufacturing technology comprises the steps of mixing materials, forming, firing and the like, wherein the firing process is performed under normal pressure, the requirements on equipment and the like are low, the energy consumption is low.

Description

technical field [0001] The invention relates to the technical field of filter tubes, in particular to a foam ceramic high-temperature gas filter tube and a preparation process thereof. Background technique [0002] In modern industrial production, the field of purification and dust removal involving high-temperature dust-containing gas is very extensive. At the same time, the purification and dust removal of high-temperature dust-containing gas is also one of the problems that must be solved in modern industrial production to achieve environmental protection. However, due to the characteristics of high temperature and strong gas corrosiveness in the process of high-temperature gas purification and dust removal, there are high requirements for the filter materials used. Porous ceramic materials have excellent thermal stability and corrosion resistance. Working at a temperature of 1000°C, and having the advantages of good gas permeability and long service life, it has become t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/14C04B35/565C04B35/622B01D39/20B01D46/24
Inventor 陈巨乔杨向东
Owner GUANGDONG SOUTHCHINA INST OF INDAL DESIGN
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