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Preparation method and application of multi-channel cordierite plate ceramic membrane support

A technology of a ceramic membrane support body and cordierite, which is applied in the field of preparation of a multi-channel cordierite flat ceramic membrane support body, can solve the problems of easy cracking during sintering, harmful to the health of production personnel, low production efficiency, etc., and achieves filtration flux Non-toxic, wide application range, high porosity effect

Active Publication Date: 2016-01-13
SANDA FILM SCI & TECH XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of process is complex in operation, low in production efficiency, easy to crack when sintered at the bonding point, and low in yield, and the organic solvents and adhesives in the production process will cause great pollution to the environment and are harmful to the health of production personnel.

Method used

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  • Preparation method and application of multi-channel cordierite plate ceramic membrane support
  • Preparation method and application of multi-channel cordierite plate ceramic membrane support

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Take the solid raw material components by weight percentage as follows: the average particle diameter is 190 μm cordierite ceramic aggregate 95%, activated carbon powder (20 μm) 1%, PVA powder 1% and purity 98% gelatin powder of molecular weight 2000 3%, mix the above raw material components and ball mill for 2 hours, then add RO water, heat it in a water bath to 85°C, and ball mill for 20 hours to obtain a slurry. The volume ratio of the total volume of the above solid raw material components to the added RO water is 2.2:1;

[0032] (2) Keep the slurry at 80°C, and after vacuum defoaming, pour it into a plate-frame forming mold, and perform in-situ molding at a forming temperature of 20°C to obtain a wet billet; the plate-frame forming mold is equipped with a plurality of tubular or rod-shaped molds to form channels in the support body through opposite side walls;

[0033] (3) After demoulding the above-mentioned wet blank, dry it in the shade at room temperature ...

Embodiment 2

[0036] (1) Take the solid raw material components by weight percentage as follows: the average particle diameter is 80% of cordierite ceramic aggregate, starch (1 μm) 5%, PEG powder 5% of molecular weight 1000 and agar powder 10% of purity 98%. %, mix the above-mentioned raw material components and ball mill for 4 hours, then add RO water, and heat it in a water bath to 45°C, and ball mill for 18 hours to obtain a slurry. The volume ratio of the total volume of the above-mentioned solid raw material components to the added RO water is 1.5:1;

[0037](2) Maintain the slurry at 45°C, and after vacuum defoaming, pour it into a plate-frame forming mold, and perform in-situ molding at a forming temperature of 15°C to obtain a wet billet; the plate-frame forming mold is equipped with a plurality of tubular or rod-shaped molds to form channels in the support body through opposite side walls;

[0038] (3) After demoulding the above-mentioned wet billet, dry it in the shade at room te...

Embodiment 3

[0041] (1) Take the solid raw material components by weight percentage as follows: the average particle diameter is 100 μm cordierite ceramic aggregate 90%, activated carbon powder (10 μm) 3%, MC powder 2% and purity 98% agarose of molecular weight 2800 5% powder, mix the above raw material components and ball mill for 3 hours, then add RO water, heat in a water bath to 75°C, and ball mill for 12 hours to obtain a slurry. The total volume of the above solid raw material components and the volume of the added RO water The ratio is 1.8:1;

[0042] (2) Maintain the slurry at 75°C, and after vacuum defoaming, pour it into a plate-frame forming mold, and perform in-situ molding at a forming temperature of 25°C to obtain a wet billet; the plate-frame forming mold is equipped with a plurality of tubular or rod-shaped molds to form channels in the support body through opposite side walls;

[0043] (3) After demoulding the above-mentioned wet blank, dry it in the shade at room tempera...

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Abstract

The invention discloses a preparation method and an application of a multi-channel cordierite plate ceramic membrane support. The preparation method includes the following steps: 1) weighing solid raw material components according to the following weight percentage ratio, and mixing the components, ball-milling the mixture, adding RO water, heating the mixture to 40-85 DEG C and ball-milling the mixture to obtain slurry; 2) maintaining the temperature of the slurry to be 40-85 DEG C, vacuum-defoaming the slurry, injecting the slurry into a plate-frame moulding die, and performing in-situ moulding at 0-40 DEG C to obtain a wet blank; 3) demoulding the wet blank, shade-drying the wet blank at room temperature, drying the wet blank at 40-100 DEG C, and sintering the blank in air at 1000-1400 DEG C with temperature maintained to obtain the multi-channel cordierite plate ceramic membrane support. The preparation method is carried out through the gel-casting process so that the method is wide in available range and is free of special demand on powders, and is low in cost, is easy to control in processes and achieves near-net-shape moulding to produce parts having complex shapes. The blank is high in strength, allows mechanical processing, is low in organic substance content, allows direct sintering and is free of individual gum removal. The blank and the sintered body have good performance uniformity.

Description

technical field [0001] The invention belongs to the technical field of ceramic membrane supports, and in particular relates to a preparation method and application of a multi-channel cordierite flat ceramic membrane support. Background technique [0002] Organic membranes used in membrane bioreactors suffer from low mechanical, chemical, and thermal stability, which limits their application in harsh systems. Compared with organic membranes, in addition to effective interception, inorganic ceramic flat membranes also have the advantages of high temperature resistance, solvent resistance, acid and alkali corrosion resistance, high mechanical strength, long life, high separation efficiency, easy cleaning and regeneration, etc. Realize deep purification of sewage, deep phosphorus and nitrogen removal. Due to the excellent performance of the inorganic ceramic flat membrane, many companies have begun to develop and promote this application technology, and the application of this ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B35/195
Inventor 丘助国翁志龙洪昱斌蓝伟光
Owner SANDA FILM SCI & TECH XIAMEN
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