Trapezoidal efficient dust-removal inorganic film and manufacturing method thereof

An inorganic membrane and high-efficiency technology, which is applied in the field of dust removal inorganic membranes, can solve problems such as not being able to meet high-temperature discharge requirements, and achieve the effects of low manufacturing difficulty, high dust removal efficiency, and low surface resistance

Inactive Publication Date: 2017-01-25
湖南银和高新环保陶瓷有限公司
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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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  • Trapezoidal efficient dust-removal inorganic film and manufacturing method thereof
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preparation example Construction

[0022] Further, the present invention also provides a preparation method of the trapezoidal high-efficiency dust-removing inorganic membrane, the preparation method comprising the following steps:

[0023] (1) In terms of mass percentage, mix 50-85% of silicon carbide, 5-30% of alumina, 5-30% of kaolin, 2-20% of zirconia and 0.5-3% of cellulose, and grind to the particle size 10-40μm, to obtain mixed powder;

[0024] (2) Fully mix the above mixed powder with water accounting for 5-15% of the mass of the mixed powder to obtain a slurry;

[0025] (3) Coat the above-mentioned slurry on a trapezoidal mold, adopt isostatic pressing molding or plastic pressing molding, press molding, and after drying, fire at 1450-1550°C; wherein, the specific conditions for molding are: Pressure 1450~1650kgf / cm 2 , temperature 1000 ~ 1200 ℃, holding time 15 ~ 20min.

[0026] Wherein, in the preparation method of the above-mentioned trapezoidal high-efficiency dust-removing inorganic membrane, th...

Embodiment 1

[0030] The trapezoidal high-efficiency dust removal inorganic membrane is prepared according to the following steps:

[0031] (1) In terms of mass percentage, mix 55% silicon carbide (its particle size is 40μm, purity 97%), α-alumina 25%, kaolin 8%, zirconia 16% and cellulose 0.05%, mix well, Grinding to a particle size of 30 μm to obtain a mixed powder;

[0032] (2) Fully mix the above mixed powder with water accounting for 15% of the mass of the mixed powder to obtain a slurry;

[0033] (3) Coat the above slurry on a trapezoidal mold, use isostatic pressing to form, and after drying, repeat sintering at 1450°C for 3 times, each sintering for 12 hours; among them, the specific conditions for isostatic pressing For: pressure 1550kgf / cm 2 , temperature 1050 ° C, holding time 18min.

Embodiment 2

[0035] The trapezoidal high-efficiency dust removal inorganic membrane is prepared according to the following steps:

[0036] (1) In terms of mass percentage, mix 80% silicon carbide (its particle size is 60μm, purity 99%), α-alumina 10%, kaolin 25%, zirconia 8% and lignocellulose 0.1%, mix well , and grind to a particle size of 50 μm to obtain a mixed powder;

[0037] (2) Mix the above mixed powder with water accounting for 12% of the mass of the mixed powder under high-speed stirring conditions to obtain a slurry;

[0038] (3) Coat the above-mentioned slurry on the trapezoidal mold, 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 fire it; among them, plastic compression molding The specific conditions are: pressure 1600kgf / cm 2 , the temperature is 1200°C, and the holding time is 15 minutes.

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Abstract

The invention discloses a trapezoidal high-efficiency dust-removing inorganic membrane and a manufacturing method thereof, belonging to the field of dust-removing inorganic membranes. The inorganic membrane is prepared from the following raw materials: in terms of mass percentage, the raw materials include 50-85% of silicon carbide, 5-30% of aluminum oxide, 5-30% of kaolin, 2-20% of zirconia and 0.05-0.3% of cellulose %. The prepared inorganic membrane has a unique trapezoidal structure, and its filtration area increases three times under the same volume. The inorganic membrane has the ability to resist ultrafine dust clogging and excellent oil and water resistance, high temperature resistance, acid and alkali corrosion resistance, It has the characteristics of low surface resistance, high dust removal efficiency and long service life.

Description

technical field [0001] The invention belongs to the field of dust-removing inorganic membranes, and in particular relates to a trapezoidal high-efficiency dust-removing inorganic membrane and a manufacturing method thereof. 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 d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D67/00B01D69/02B01D46/54
CPCB01D71/02B01D46/543B01D67/0046B01D69/02B01D71/025
Inventor 钱桂芳肖俊彦
Owner 湖南银和高新环保陶瓷有限公司
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