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Tubular type ceramic filter element and preparation method thereof

A ceramic filter element and tubular technology, which is applied in the field of tubular ceramic filter element and its preparation, can solve the problem of low water flux, achieve the effect of expanding the application range and improving efficiency

Active Publication Date: 2015-07-22
江苏赛启分离科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention proposes a tubular ceramic filter element to solve the problem of low water flux when the membrane aperture of the ceramic filter element reaches the ultrafiltration range

Method used

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  • Tubular type ceramic filter element and preparation method thereof
  • Tubular type ceramic filter element and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Prepare the membrane transition layer; the weight ratio of the raw materials for the membrane transition layer is as follows: alumina powder (average particle size: 1.2-1.8um) 20kg, calcium nitrate 0.38kg, magnesium nitrate 0.4kg, yttrium nitrate 0.46kg, zirconium nitrate 1.95kg, 0.2kg of lanthanum nitrate, 0.56kg of superfine titanium dioxide powder, 1.6kg of superfine silica powder, 0.46kg of polyvinyl alcohol, 0.48kg of methyl cellulose, 0.25kg of gum arabic powder, 0.048kg of tributyl phosphate, Stearic acid monoglyceride 0.32kg, water 80kg.

[0034] After fully stirring evenly, let it stand for 1-3 days for later use, use a film coating machine to coat the film on the tubular support substrate, dry it at 120°C, and put it into a kiln at 1300°C for sintering.

[0035] (2) Prepare the membrane separation layer; the weight ratio of the raw materials for the membrane separation layer is as follows: ultrafine high-purity zirconia powder (average particle size 0.25-0...

Embodiment 2

[0038] (1) Prepare the membrane transition layer; the weight ratio of the raw materials for the membrane transition layer is as follows: alumina powder (average particle size: 1.2-1.8um) 100kg, calcium nitrate 1.8kg, magnesium nitrate 1.8kg; yttrium nitrate 0.8kg, zirconium nitrate 1.8kg, lanthanum nitrate 1kg, superfine titanium dioxide powder 2kg, superfine silica powder 3kg, polyvinyl alcohol 2kg, methylcellulose 5.5kg, gum arabic powder 0.25kg, tributyl phosphate 0.6kg, monostearic acid Glyceride 1.2kg, water 250kg.

[0039] After fully stirring evenly, let it stand for 1-3 days for later use, use a film coating machine to coat the film on the tubular support substrate, dry it at 120°C, and put it into a kiln at 1500°C for sintering.

[0040] (2) Prepare the membrane separation layer; the weight ratio of the raw materials for the membrane separation layer is as follows: 100kg of ultra-fine high-purity zirconia powder (average particle size 0.25-0.45um), 12.3kg of calcium n...

Embodiment 3

[0043] (1) Prepare the membrane transition layer; the weight ratio of the raw materials for the membrane transition layer is as follows: alumina powder (average particle size: 1.2-1.8um) 10kg, calcium nitrate 1.2kg, magnesium nitrate 1.2kg; yttrium nitrate 0.1kg, zirconium nitrate 1.32kg, 0.8kg of lanthanum nitrate, 1.3kg of superfine titanium dioxide powder, 1.4kg of superfine silica powder, 0.9kg of polyvinyl alcohol, 0.3kg of methyl cellulose, 0.25kg of gum arabic powder, 0.6kg of tributyl phosphate, Stearic acid monoglyceride 1.2kg, water 30kg.

[0044] After fully stirring evenly, let it stand for 1-3 days for later use, use a film coating machine to coat the film on the tubular support substrate, dry it at 120°C, and put it into a kiln at 1350°C for sintering.

[0045](2) Prepare the membrane separation layer; the weight ratio of the raw materials for the membrane separation layer is as follows: ultrafine high-purity zirconia powder (average particle size 0.25-0.45um) 10...

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Abstract

The invention provides a tubular type ceramic filter element which comprises a tubular type support matrix and a membrane transition layer and a membrane separation layer which respectively cover the tubular type support matrix and a method for preparing the ceramic filter element. Pure water flux of the tubular type ceramic filter element reaches up to 1000-2000L / m<2>.h and is 3-5 times higher than that of like products in the current market. According to the invention, operation efficiency is greatly raised, and application range of the tubular type ceramic filter element is broadened.

Description

technical field [0001] The invention relates to the field of ceramic filter membranes, in particular to a tubular ceramic filter element and a preparation method thereof. Background technique [0002] Ceramic filter element is mainly used for filtering, antibacterial and activation treatment of drinking water, removing harmful residual chlorine, suspended pollutants, organic chemicals, color and peculiar smell. By using this filter element, drinking water that meets a certain drinking standard can be filtered out. The flux of the tubular ceramic filter element mainly depends on the membrane layer on its surface. At present, the flux of the filter element decreases sharply as the pore size of the coated membrane decreases. When the pore size of the membrane reaches the range of ultrafiltration, its flux even Will drop to 300-400L / m 2 .h, the operating efficiency is too low, which greatly increases the operating cost of the user, thereby affecting the application range of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/04B01D69/10B01D67/00B01D71/02B01D61/18B01D39/20C04B35/10C04B35/622
Inventor 刘旭红杨秋业黄斌倪黎
Owner 江苏赛启分离科技有限公司
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