Gas-solid separation ceramic film and preparation method thereof

A gas-solid separation, ceramic membrane technology, applied in separation methods, ceramic products, semi-permeable membrane separation, etc., can solve problems such as high toughness, membrane fracture, etc., to achieve extended service life, low cost, and reduced operation and maintenance costs. Effect

Inactive Publication Date: 2015-12-09
JIANGSU JIUWU HITECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the film layer breaks due to the high toughness between the support body and the film layer during the gas-solid separation process of the silicon carbide ceramic film

Method used

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  • Gas-solid separation ceramic film and preparation method thereof

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preparation example Construction

[0048] Preparation of qi solid separation film

[0049] The gas solid separation membrane of this implementation method can be manufactured through the following process: the surface coating of the porous support body of the porous support body that constitutes the separation film; and through the thermal treatment of the particles of the membrane liquid sintering, the surface of the support body forms the membrane layer on the surface of the support bodyWork.

[0050] Among them, the preparation of porous support can be mixed with silicon carbide powder with a small amount of pores (such as charcoal powder, graphite, starch, and wood chips).Ligue agent.The percentage content of the final silicon carbide or toughened auxiliary in the support body is calculated with the amount of these raw materials at the time of adding, and the pores will disappear during the sintering process. Therefore, when calculating the weight of the particle weightNot counting inside.If you use a static p...

Embodiment 1

[0065] Preparation of silicon carbide gas solid -separated ceramic film, the raw material slurry composition of the support body is as follows: 80G supporting raw material raw materials of carbide silicon powder is 100 μm, toughest auxiliary is oxide particles, the particle size is 5 μm, 10g;10g of graphite, sintering auxiliary MGO3G.After waiting for the static pressure molding process, the body is obtained, and the support body is obtained after 4 hours of sintering by 1400 ° C.

[0066] The raw material of the membrane is 80g of alumina powder, the particle size is 20 μm, and the rest are polyethylene alcohol 5g, polyethylene pyrirol 2g, and 160g of de -ion water.membrane.After getting a wet film, after 5 hours of drying and sintering at 1200 ° C, the qi solid separation film is obtained.

Embodiment 2

[0068] Preparation of silicon carbide gas solid -separated ceramic film, the raw material slurry composition of the support body is as follows: 85G supporting raw material raw material carbonic silicon powder particle size of 200 μm, the toughened auxiliary agent is aluminum fiber, the average particle size is 3 μm, 5g;10g of pores starch, sintering auxiliary MGO5G.After waiting for the static pressure molding process, the body is obtained, and the support body is obtained after 4 hours of sintering by 1500 ° C.

[0069] The ingredients of the membrane liquid are 80g of alumina powder, the particle size is 15 μm, the toughened auxiliary is 15g of oxide particles, the particle size is 20nm, the rest are 2g of polyvinyl alcohol, the polyethylene pyrigone 4g, and 140g of exfoliating water.The ball mill is prepared to obtain the membrane liquid, and then the membrane is covered by the grining method.After getting a wet film, after 4 hours of drying and sintering at 1100 ° C, the qi so...

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Abstract

The invention relates to a gas-solid separation ceramic film and a preparation method thereof, belonging to the technical field of high temperature dedusting. Under extremely severe working conditions like high temperature and high pressure, a ceramic film supporting body and a film suffer from brittle rupture due to poor toughness of materials. According to gas-solid separation ceramic film modification methods in the invention, a small amount of micrometer toughening aids like zirconia powder, alumina silicate fiber and mullite are added into raw materials used for preparation of a ceramic film supporting body and a small amount of nanometer toughening aids like zirconia are added into raw materials used for preparation of a gas-solid separation film, so the toughness of the gas-solid separation silicon carbide ceramic film can be effectively improved; and with the two modification methods, on the premise that each excellent performance of the gas-solid separation ceramic film is not reduced, the toughness of the gas-solid separation ceramic film is improved and does not suffer brittle rupture and the like under severe working conditions.

Description

Technical field [0001] The present invention discloses a gas -solid -separated ceramic film and its preparation method, which is the technology field of inorganic separation materials. Background technique [0002] At present, the situation of the atmospheric environment in my country is very severe, with a large -scale haze weather frequently. The PM2.5 in some cities is seriously exceeding the standard. The problem of atmospheric pollution characteristics characterized by fine particles has become increasingly prominent, which has caused great harm to human health and environmental quality. Sustainable economic development.The governance of high -temperature flue gas discharged by industrial kiln in steel, cement, power, and coal chemical industry has become one of the primary solutions. [0003] To solve the problem of over -standard dust emissions of high -temperature flue gas, gas solid separation equipment, traditional gas solid separation process, such as electric dust c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/10B01D71/02B01D67/00B01D46/54C04B38/00C04B35/565
Inventor 彭文博沈云进吴金刚张桂花邓唯张建嵩张宏范克银
Owner JIANGSU JIUWU HITECH
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