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Ceramic separation membrane structure and method for producing same

A technology of ceramic separation membrane and manufacturing method, which is applied in the direction of separation method, semi-permeable membrane separation, dispersed particle separation, etc., to achieve the effect of simple process, improved separation performance and simple device

Active Publication Date: 2015-11-18
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there is a problem that it cannot be used for dehydration under high water concentration, etc.

Method used

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  • Ceramic separation membrane structure and method for producing same
  • Ceramic separation membrane structure and method for producing same
  • Ceramic separation membrane structure and method for producing same

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Experimental program
Comparison scheme
Effect test

Embodiment

[0087] Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples.

[0088] (1) Preparation of substrate (porous body)

[0089] An integrated structure-like substrate 30 is produced, and a separation membrane 33 is formed in the pore units 4 thereof. First, fabrication of the base material 30 will be described.

[0090] (Substrate)

[0091] Kneading clay is prepared by adding water, dispersant and thickener to alumina particles (aggregate particles) with an average particle size of 50 μm and mixing them. The obtained kneaded clay is extruded to form a honeycomb-shaped unfired base material 30 .

[0092] Next, the base material 30 is fired at 900 to 1500°C. The outer shape of the substrate 30 (porous body 9 ) was cylindrical, with an outer diameter of 30 mm, a cell diameter of 2.2 mm, a number of 61 cells, and a length of 160 mm.

[0093] (2) Formation of DDR film

[0094] As the separa...

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Abstract

Provided are: a ceramic separation membrane structure which has achieved improved separation performance without lowering permeation performance; and a method for producing this ceramic separation membrane structure. This ceramic separation membrane structure comprises a ceramic porous body (9), a zeolite separation membrane (33) that is arranged on the ceramic porous body (9), and a repair part (34) that is formed of an organic-inorganic hybrid silica repair material. The organic-inorganic hybrid silica is a combination of an organic component and an inorganic component containing silicon.

Description

technical field [0001] The present invention relates to a ceramic separation membrane structure having a zeolite separation membrane on a ceramic porous body, and a manufacturing method thereof. Background technique [0002] In recent years, filters made of ceramics have been used to selectively recover a specific component individually from a mixture of multiple components (mixed fluid). Filters made of ceramics are superior in mechanical strength, durability, and corrosion resistance compared to filters made of organic polymers. Therefore, they are preferably used in a wide range of fields such as water treatment and waste gas treatment, or the fields of medicine and food. Removal of suspended solids, bacteria, dust, etc. in liquids and gases. [0003] As such a filter, a filter in which a zeolite membrane is formed on a ceramic porous material is known. In the case of forming a zeolite membrane by hydrothermal synthesis on a ceramic porous body, even if a good zeolite m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02B01D65/10B01D69/04B01D69/10B01D69/12
CPCB01D67/0051B01D63/066B01D65/108B01D71/028B01D67/0083B01D67/0088B01D71/027B01D2323/06B01D53/228B01D69/108B01D71/0281B01D2323/081B01D61/145B01D2053/221
Inventor 内川哲哉谷岛健二犬饲直子市川真纪子
Owner NGK INSULATORS LTD