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Separation membrane complex, and method for production of separation membrane complex

A manufacturing method and technology for separation membranes, applied in chemical instruments and methods, semi-permeable membrane separation, membranes, etc., can solve the problems of membrane deterioration and deterioration of the separated body, etc., and achieve excellent results, low total pressure loss, and high selectivity. Effect

Active Publication Date: 2010-03-31
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, since these separation membranes are made of polymer resin, if an organic solvent is contained in the mixture of the separated body, there will be problems such as deterioration of the membrane and the limitation of the separated body itself.

Method used

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  • Separation membrane complex, and method for production of separation membrane complex
  • Separation membrane complex, and method for production of separation membrane complex
  • Separation membrane complex, and method for production of separation membrane complex

Examples

Experimental program
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Effect test

Embodiment 1

[0074] After molding and firing by extrusion molding, a monolithic substrate with an average particle diameter of 10 to 100 μm and an average pore diameter of 1 to 30 μm is prepared. Then, while adjusting the thickness of the membrane with the time of membrane formation, the average particle diameter of the aggregates composed of primary particles with a diameter of 0.01 to 1 μm is set to Alumina particles (secondary particles) of 0.3 to 10 μm are deposited and then fired to form an intermediate layer having a thickness of 10 μm and an average particle diameter of 0.1 to 3 μm. Next, while adjusting the thickness of the film at the time of film formation, aluminum oxide particles with an average particle diameter of 0.03 to 1 μm were further deposited on the intermediate layer by the filtration film formation method, and then fired to form a film with a thickness of 10 μm. A surface layer having an average particle diameter of 0.01 to 0.5 μm yields a porous body.

[0075] Then...

Embodiment 2

[0078] A separation membrane composite was produced in the same manner as in Example 1 except that the thickness of the intermediate layer was 100 μm, and evaluated by the water-alcohol permeation vaporization separation method under the same conditions as in Example 1. Table 1 shows the particle morphology (agglomerates or dense bodies) of the interlayer, thickness of the interlayer, percolation vaporization separation performance (separation coefficient, flux) and pressure loss. in addition, Figure 4 A photograph showing a cross section of a porous body after forming a carbon film. In Example 2, two porous bodies were produced under the same conditions, Figure 4 It is a photograph cut using one of the porous bodies.

Embodiment 3

[0080] Except using the aluminum oxide particle that is made of dense body when forming the intermediate layer and the thickness of the intermediate layer is 50 μ m, make separation membrane complex body similarly with embodiment 1, under the same conditions as embodiment 1, by water- Ethanol permeation vaporization separation method to evaluate. Table 1 shows the particle morphology (agglomerates or dense bodies) of the interlayer, thickness of the interlayer, percolation vaporization separation performance (separation coefficient, flux) and pressure loss.

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Abstract

The invention provides a separation membrane complex, and method for production of separation membrane complex. Disclosed is a separation membrane complex (1) characterized by having a carbon membrane(66) formed directly on a porous material (61) (a surface layer (64)) and also having an interlayer (63) with a thickness of 10 to 100 ¢mu!m. The separation membrane complex (1) can be used as a filter having improved flux and selectivity compared to a conventional one.

Description

technical field [0001] The present invention relates to a separation membrane composite having a porous body and a separation membrane formed on the surface of the porous body and a method for producing the separation membrane composite. Background technique [0002] Corresponding to the technical requirement of selectively separating a specific substance (gas, etc.) from a mixture of multiple substances (gas, etc.) at the molecular level, polysulfone, silicon, polyamide, polyimide, etc. are generally known as filter membranes. etc. as a separation membrane. [0003] However, since these separation membranes are made of polymer resin, if an organic solvent is contained in the mixture of the to-be-separated body, there is a problem that the membrane is easily deteriorated and the to-be-separated body itself is limited. [0004] Here, in recent years, as a membrane excellent in chemical stability and heat resistance, a composite body in which a carbon membrane as a separation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/12B01D69/10B01D71/02
CPCB01D71/027B01D71/025B01D69/02B01D71/028B01D63/066B01D71/021B01D2325/04B01D67/0046B01D67/0067B01D69/12
Inventor 市川明昌野中久义富田俊弘
Owner NGK INSULATORS LTD
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