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Filter tube support body material for microporous inorganic separating film and synthesizing method thereof

A support and filter tube technology, applied in semi-permeable membrane separation, chemical instruments and methods, membrane technology, etc., can solve the problems of low strength of silicon carbide support, and achieve easy control, low environmental pollution, and simple process conditions. Effect

Inactive Publication Date: 2009-09-23
HAINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The silicon carbide support prepared under this condition has low strength (22MPa)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The following non-limiting examples are used to further illustrate the present invention.

[0019] Mix 64.53g of feldspar, 12.20g of kaolin and 23.27g of silica, use anhydrous ethanol as the dispersion medium, ball mill for 36h to make the mixture uniform, and then dry at 8℃ for 10h to prepare the required binder .

[0020] A 2% aqueous solution of carboxymethyl cellulose was prepared with deionized water. Weigh 4 parts of 50 grams of SiC powder and 5 grams of carboxymethyl cellulose solution, mix them evenly, then add 3wt%, 6wt%, 10wt%, 15wt% of the above-prepared binder, stir evenly and put Put it into an oven and dry at 80℃ for 10h. Grind the baked material evenly with a mortar, and then use a pressure of 180 MPa to unidirectionally press into a disc with a diameter of 50 mm. The support material is sintered in an air atmosphere, and the sintering process is to raise the temperature to 1300°C at a heating rate of 5°C / min, then keep it for 1 hour, and finally cool down wi...

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Abstract

The invention discloses a filter tube support body material for a microporous inorganic separating film and a synthesizing method thereof. The filter tube support body material is formed by mixing, drying, grinding and sintering Sic powder, carboxymethyl cellulose and binding agents; and the binding agents are formed by mixing and drying feldspar, kaoline and silicon dioxide. The synthesizing method thereof comprises the preparation processes of the binding agents and the support body material. The filter tube support body material for microporous inorganic separating film takes the Sic particles as framework materials, is matched with accessories such as environment-friendly binding agents and pore-forming agents, and has the advantages of low sintering temperature, greatly improved intensity with respect to the silicon carbide support body of the same type and the like. The preparation process has simple process conditions, easy control and little environment pollution.

Description

Technical field [0001] The invention belongs to the technical field of filtration and separation, and specifically relates to a filter tube support material for a microporous inorganic separation membrane and a synthesis method thereof. Background technique [0002] The filter tube for microporous inorganic separation membrane as a filter separation medium is widely used in various fields of industry. With its superior characteristics of high temperature resistance, good stability, long service life, and good separation effect, it has become a hot spot in the field of membrane technology research. one. However, due to their brittleness and other unfavorable factors, they must be covered on a support with a certain mechanical strength. As a membrane support material, the quality of the support is of great significance to the quality of the entire membrane. The support as a matrix should have the following performance requirements: (1) It has a sufficiently high porosity and a suit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/10
Inventor 李建保邓湘云李俊峰吴新正李婷张海涛袁珍
Owner HAINAN UNIVERSITY