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Preparation method of gap-variable adsorption material with porous ceramic as matrix

A technology of porous ceramics and adsorption materials, which is applied in the field of variable-gap adsorption material preparation, can solve the problems of reduced flushing force and great difficulty in cleaning, etc.

Inactive Publication Date: 2021-06-04
张宇
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  • Application Information

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Problems solved by technology

[0004] However, when cleaning porous ceramic filter materials, due to the complex pore distribution of the material itself, when the gas or liquid reaches the internal pores, the flushing force has been greatly reduced, and the cleaning of the pores inside the material is much more difficult than the surface of the material.

Method used

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  • Preparation method of gap-variable adsorption material with porous ceramic as matrix
  • Preparation method of gap-variable adsorption material with porous ceramic as matrix
  • Preparation method of gap-variable adsorption material with porous ceramic as matrix

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Embodiment

[0044] see figure 1 A method for preparing a variable-gap adsorption material based on porous ceramics, comprising the following steps:

[0045] S1. Prepare a porous ceramic material with large pores and open pores, clean it with deionized water, and dry it for later use;

[0046] S2. Immerse the porous ceramic material in a container filled with thermoplastic slurry M in a low-temperature molten state, and slowly extract air to form a vacuum, so that the slurry M is fully filled in the pores of the porous ceramic material, and the porous ceramic material is taken out. The airflow dredges the porous ceramics, removes the excess slurry M inside the ceramic pores, dredges the pores, and forms a phase change layer 1 on the surface of the ceramics and the inner wall of the pores after cooling to obtain a semi-finished product 1, such as figure 1 As shown, wherein A represents the porous ceramic material, and a represents the pore inner wall of the porous ceramic material;

[004...

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Abstract

The invention discloses a preparation method of a gap-variable adsorption material taking porous ceramic as a matrix, and belongs to the field of ceramic adsorption materials. Porous ceramic is used as a matrix, a phase change layer and a heat-resistant outer coating film are formed on the surface of the matrix, and the heat-resistant outer coating film with a high melting point wraps the outer side of the phase change layer with a low melting point, thereby manufacturing the creative adsorption material having the gap-variable function. When a heat flow (hot gas or hot water) is used for backwashing the novel adsorption material, the phase change layer is heated and melted and is coated between the porous ceramic and the heat-resistant outer coating film in a fluid form, so that the heat-resistant outer coating film generates a continuous dynamic fluctuation process under the washing force of the heat flow; that is, the size and the shape of pores are changed, through the dynamic fluctuation process of the heat-resistant outer coating film, the heat-resistant outer coating film is more fully contacted with a heat flow, and meanwhile, loosening and falling of impurities on the surface of the heat-resistant outer coating film are also promoted, so that a high-efficiency and high-effect backwashing process is realized.

Description

technical field [0001] The invention relates to the field of ceramic adsorption materials, in particular to a preparation method of a variable-gap adsorption material with porous ceramics as a matrix. Background technique [0002] Porous ceramic material is a kind of porous ceramic material with open pore diameter and high open porosity, which is made of corundum sand, silicon carbide, cordierite and other high-quality raw materials as main materials, and is prepared by molding and special high-temperature sintering process. The most important feature is that it has more uniform and controllable pores. The pores are divided into open pores (pores in the ceramic matrix that communicate with the atmosphere) and closed pores (pores that are not connected to the atmosphere in the ceramic matrix). The open pores have the functions of filtering, absorbing, absorbing, and eliminating echoes, while the closed pores It is beneficial to block heat, sound and the transfer of liquid an...

Claims

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Application Information

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IPC IPC(8): C04B41/89
CPCC04B41/89C04B41/52C04B41/4869C04B41/4523C04B41/483C04B41/5059C04B41/5001C04B41/4539C04B41/4826
Inventor 张宇
Owner 张宇
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