Combined honeycomb ceramic membrane filtering element

Abstract

The invention discloses a combined honeycomb ceramic membrane filtering element comprising a honeycomb ceramic support body, a filter duct arranged in the support body, a supporting member and a fastener, wherein the honeycomb ceramic support body is in a flat plate shape; the axis of the filter duct and the board of the honeycomb ceramic support body are parallel and are arranged in the honeycomb ceramic support body in parallel to form two or more than two honeycomb ceramic monomers which are overlaid and combined at intervals; the fastener is arranged on the periphery of the combined honeycomb ceramic monomers; and the supporting member is respectively positioned between adjacent honeycomb ceramic monomers and between the fastener and the honeycomb ceramic monomer and is positioned on the port of the filter duct. The combined honeycomb ceramic membrane filtering element has the advantages of higher penetration flux and unit volume membrane area and simple configuration and preparation technology, and ensures that the osmotic resistance is effectively reduced, simultaneously the yield rate of the honeycomb ceramic membrane is greatly improved and the ceramic membrane cost is lowered.

Description

technical field [0001] The invention relates to the technical field of membrane separation, in particular to a honeycomb ceramic filter membrane element. Background technique [0002] Compared with other separation processes, membrane separation is a relatively simple separation process with low energy consumption. In principle, the components in the mixture can be recovered and reused, so it is widely used in bioengineering, petroleum, chemical industry, metallurgy, medicine, etc. field. Membrane separation is achieved through membrane modules, the core of which is the filter membrane. Compared with organic membranes, ceramic filter membranes have the advantages of good chemical stability, high mechanical strength, strong antimicrobial ability, high temperature resistance, narrow pore size distribution, and high separation efficiency. Due to the good rigidity of the ceramic material and the limitation of the preparation process, the current ceramic membranes in the prior ...

AI Technical Summary

Problems solved by technology

[0005] (2) The post-processing of the ceramic membrane is required, and the post-processing is difficult for the ceramic membrane, which further increases the complexity of the preparation process

[0006] (3) For methods such as slotting the port or adding a drainage tube, the port needs to be sealed, which is difficult to seal, and it is easy to cause the permeate to mix with the feed liquid

For example, the method of plugging slotted ports involves drying and sintering processes, and the difference between the properties of the plugging material and the honeycomb ceramics is prone to porosity, which can easily lead to contamination of the feed liquid during the filtration process.

[0007] (4) The preparation process of the honeycomb ceramic membrane is many, the process is complicated, and the possibility of introducing defects increases, so that the yield of the defect-free honeycomb ceramic membrane is low, especially for the larger volume of the honeycomb ceramic membrane, as the cross-sectional area of ​​the ceramic membrane The increase of the yield will be lower, thus further increasing the cost of the ceramic membrane which is already relatively high

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