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Inorganic membrane for filtering

A technology of inorganic membrane and alumina, which is applied in the direction of filtration separation, membrane filter, dispersed particle filtration, etc., can solve the problems that cannot meet the high temperature discharge requirements, and achieve excellent anti-ultrafine dust clogging, high dust removal efficiency and long service life Effect

Inactive Publication Date: 2017-12-15
JIANGSU YAFENG TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As we all know, coal is one of the main energy sources for human production and life. However, while coal generates a large amount of heat energy during its combustion function, it also produces a large amount of high-temperature gas with soot particles. If these gases are not discharged into the air without technical treatment , will seriously affect the survival of nearby organisms and human health, therefore, more and more people pay attention to environmental protection, and the existing high-temperature flue gas dust removal of chemical, petrochemical power, etc. Bag dust removal cannot meet the emission requirements of high temperature and new standards. Therefore, it is urgent to develop a new type of high-efficiency dust removal material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The inorganic membrane is prepared according to the following steps:

[0030] (1), in terms of mass percentage, mix 55% of silicon carbide (its particle size is 40 μm, and its purity is 97%), α-alumina 25%, kaolin 8%, zirconia 16% and cellulose 0.05%, mix uniformly, Grinding to a particle size of 30 μm to obtain a mixed powder;

[0031] (2) Fully mix the above-mentioned mixed powder with water accounting for 15% of the mixed powder mass to obtain a slurry;

[0032] (3) Coat the above-mentioned slurry in the mould, adopt the isostatic pressing method, press and form, after drying, repeat sintering at 1450° C. for 3 times, each sintering for 12 hours; wherein, the specific conditions for isostatic pressing are as follows: : Pressure 1550kgf / cm2, temperature 1050℃, holding time 18min.

Embodiment 2

[0034] The inorganic membrane is prepared according to the following steps:

[0035] (1) In terms of mass percentage, mix 80% of silicon carbide (its particle size is 60 μm and its purity is 99%), 10% of α-alumina, 25% of kaolin, 8% of zirconia and 0.1% of lignocellulose , and grind to a particle size of 50 μm to obtain a mixed powder;

[0036] (2) Mix the above-mentioned mixed powder with water accounting for 12% of the mass of the mixed powder under high-speed stirring conditions to obtain a slurry;

[0037] (3) Coat the above-mentioned slurry on the mould, adopt the method of plastic compression molding, press molding, after drying, repeat sintering at 1500°C for 3 times, and sinter for 12 hours each time, and then fire; among them, the plastic compression molding The specific conditions are: pressure 1600kgf / cm2, temperature 1200°C, pressure holding time 15min.

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Abstract

The invention discloses an inorganic membrane for filtering. The inorganic membrane is characterized in that the inorganic membrane is prepared from the following raw materials in percentage by mass: 50 to 85 percent of silicon carbide, 5 to 30 percent of aluminum oxide, 5 to 30 percent of kaolin, 2 to 20 percent of zirconium oxide and 0.05 to 0.3 percent of cellulose. According to the inorganic membrane disclosed by the invention, the inorganic membrane is prepared by adopting an inorganic material, and the filtering area of the inorganic material is increased by 3 times under a condition of the same volume, so that the inorganic membrane has the characteristics of the resistance ability to blocking of ultra-fine powder and excellent oil resistance and water resistance, high temperature resistance and the resistance to acid and alkali corrosion, low surface resistance, high dust removal efficiency, long service life and the like; moreover, the preparation difficulty of the inorganic membrane is small, and an application range is wide.

Description

technical field [0001] The invention belongs to the field of inorganic membranes, and in particular relates to an inorganic membrane for filtering. Background technique [0002] As we all know, coal is one of the main energy sources for human production and life. However, while coal generates a large amount of heat energy during its combustion function, it also produces a large amount of high-temperature gas with soot particles. If these gases are not discharged into the air without technical treatment , will seriously affect the survival of nearby organisms and human health, therefore, more and more people pay attention to environmental protection, and the existing high-temperature flue gas dust removal of chemical, petrochemical power, etc. Bag dust removal cannot meet the emission requirements of high temperature and new standards. Therefore, it is urgent to develop a new type of high-efficiency dust removal material. Contents of the invention [0003] The purpose of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D67/00B01D46/54B01D39/20
CPCB01D71/02B01D39/20B01D46/543B01D67/0039B01D67/0041B01D2239/10
Inventor 郭友峰郭涛侯鹏亮刘东明
Owner JIANGSU YAFENG TECH GRP CO LTD
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