Composite ceramic filter element and preparation process thereof

A technology of ceramic filter element and preparation process, which is applied in the field of preparation of composite ceramic filter element to achieve the effects of controlling filtration accuracy, pressure drop, and controllable pore size

Inactive Publication Date: 2015-03-25
SUZHOU BOQING ADVANCED MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the inherent brittleness of ceramics inevitably makes the preparation of the filter element take a composite process route.

Method used

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  • Composite ceramic filter element and preparation process thereof
  • Composite ceramic filter element and preparation process thereof

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Embodiment Construction

[0019] This embodiment is a composite ceramic filter element, including a ceramic fiber woven filter element matrix, such as figure 1 As shown, the ceramic fiber woven filter element matrix layer is compounded with a chopped ceramic fiber layer to increase the toughness of the filter element, a silicon carbide coating (1) is deposited on the chopped ceramic fiber layer, and the silicon carbide coating (1) is The ceramic fiber woven filter element matrix is ​​also compounded with a carbon transition layer (2) formed by pyrolytic phenolic resin; wherein the weight of the silicon carbide coating is 1.8 to 2 times that of the ceramic fiber woven filter element matrix, and the matrix The thickness of the silicon carbide coating is 15-20 times.

[0020] The composite ceramic filter element is a tubular filter element with a groove opening at one end (flange head) and a closed end at the other end. When the composite ceramic filter element uses external pressure, dust-containing gas ente...

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Abstract

The invention discloses a composite ceramic filter element and a preparation process thereof. The composite ceramic filter element comprises a ceramic fiber braid filter element basal body layer, wherein a short-cut ceramic fiber layer capable of improving the flexibility of the filter element is composited onto the ceramic fiber braid filter element basal body layer, a SiC coating is deposited on the short-cut ceramic fiber layer, and a carbon transition layer which is formed by pyrolytic phenolic resin is also arranged between the SiC coating and a ceramic fiber braid filter element basal body in a compositing manner; the weight of the SiC coating is 1.8 to 2 times of the weight of the ceramic fiber braid filter element basal body, and the thickness of the basal body is 15 to 20 times of the thickness of the SiC coating. The composite ceramic filter element adopting the structural form has excellent characteristics of light weight, high strength, large flexibility, low pressure drop, corrosion resistance and controllability of aperture.

Description

Technical field [0001] The invention relates to the technical field of composite ceramic material production, in particular to a preparation technology of a composite ceramic filter element used to block dust particles in the process of ceramic material production and filtration. Background technique [0002] In recent years, in order to improve the efficient and clean utilization of coal, various countries have carried out a large number of new clean coal technology development work. Such as coal gasification combined cycle technology, integrated coal gasification combined cycle power generation technology, pressurized fluidized bed combustion combined cycle technology, etc. The main purpose of developing these technologies is to ensure that the level of exhaust gas emissions from coal burning is maintained within an acceptable range of the environment; at the same time, as raw material gas, it does not have harmful effects on downstream equipment and products. The core of thes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/20B32B18/00
Inventor 梁龙施荣生徐国民
Owner SUZHOU BOQING ADVANCED MATERIALS
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