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Porous ceramic membrane material for photo-thermal sea water desalination and preparation method and application

A porous ceramic membrane and porous ceramic technology are applied in the field of porous materials and preparation for photothermal seawater desalination, which can solve the problems of pollution of the environment by the preparation process, short service life of membranes, poor solvent resistance, etc. The effect of high preparation efficiency and high mechanical strength

Active Publication Date: 2019-03-29
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the defects of existing seawater desalination membrane materials such as poor thermal stability, easy aging, poor solvent resistance, short service life of the membrane and environmental pollution of the preparation process, the present invention provides an environmentally friendly optical fiber prepared from pure inorganic materials. Porous Ceramic Membrane Materials for Hot Seawater Desalination

Method used

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  • Porous ceramic membrane material for photo-thermal sea water desalination and preparation method and application
  • Porous ceramic membrane material for photo-thermal sea water desalination and preparation method and application
  • Porous ceramic membrane material for photo-thermal sea water desalination and preparation method and application

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Effect test

Embodiment 1

[0039] The first step: powder preparation

[0040] Obtain Ti powder, Al powder, TiO 2 Powder, B 2 o 3 Powder, B 4 C powder, TiH 2 Powder and other mixed powders are used as raw materials, and the molar ratio is: 4:11:3:3:3:0.2; put the powder into a ball mill and mix for 4 hours;

[0041] Step Two: Preparation for Plasma Heating

[0042] Lay a layer of mixed powder on the plasma workbench, with a thickness of 10um and a green body with a diameter of Φ100mm;

[0043] Step 3: Synthesis of Porous Ceramic Membrane Foam Board

[0044] Turn on the normal pressure DC plasma beam power supply, the plasma beam current is 100A, the voltage is 50V, and the scanning speed is 10mm / s, and the powder green body is scanned and heated by the plasma beam current. Under the action of plasma heat, the mixed powder green body reacts: Ti+B 4 C+TiH 2 +Al+TiO 2 +B 2 o 3 →TiAl+TiB+TiB 2 +Ti 3 B 4 +TiC+TiB 2 +Al 2 o 3 +H 2 , the porous ceramic membrane foam plate is obtained after the...

Embodiment 2

[0052] Embodiment two removes TiH in the first step powder preparation 2 The molar ratio is changed from 0.2 to 1.0, and in the third step of the synthesis of the porous ceramic membrane foam board, the plasma beam current is changed to 50A, and the scanning speed is 20mm / s. Except for the parameter changes in the above two steps, all other processes and parameters are the same as in the first embodiment.

[0053] A porous ceramic membrane foam plate with a pore diameter of 2.0-4 μm and a porosity of 75% is finally obtained, which becomes a porous ceramic heterogeneous structure membrane after hydrothermal synthesis and calcination.

Embodiment 3

[0055] In addition to the TiH in the first step of powder preparation 2 The molar ratio of the compound was changed from 0.2 to 0.6, and in the third step of the synthesis of the porous ceramic membrane foam plate, the plasma beam current was changed to 70A, and the scanning speed was 15mm / s. Except for the parameter changes in the above two steps, all other processes and parameters are the same as in the first embodiment.

[0056] A porous membrane with a pore diameter of 1.0-3 μm and a porosity of 55% is finally obtained, which becomes a porous ceramic heterostructure membrane after hydrothermal synthesis and calcination.

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Abstract

The invention discloses a porous ceramic membrane material for photo-thermal sea water desalination and a preparation method and application. The preparation method comprises the steps that a porous ceramic membrane foam board is used as a carrier, a nanometer heterostructure layer is synthesized on the carrier through a hydrothermal method, and a porous ceramic heterostructure membrane containingTiO2 on the surface is obtained through further calcination; and the pore diameter of the porous ceramic membrane foam board is 0.1-4.0 [mu]m, and the porosity is 30%-75%. According to the porous ceramic membrane material for the photo-thermal sea water desalination and the preparation method and the application, plasma beam heating control and chemical synthesis are combined, a porous ceramic membrane / nanometer oxide TiO2 heterostructure membrane with a controllable porous structure is prepared, the proportion of a pore forming agent and the technology parameters of plasma beam scanning heating are changed, ceramic foam boards with various porosities and pore diameters are obtained, a gradient structure can be assembled according to actual requirements, and photo-thermal conversion and sea water desalination multifunction application are realized.

Description

technical field [0001] The invention belongs to the field of composite material synthesis, and in particular relates to a porous material for photothermal seawater desalination and a preparation method. Background technique [0002] With the global shortage of fresh water resources, seawater desalination has become one of the important means of obtaining fresh water resources. Conventional seawater desalination has high energy consumption, high cost, and low efficiency, and it also exacerbates the energy shortage. Therefore, using renewable clean energy such as solar energy for seawater desalination will become an important development direction. [0003] Seawater desalination membrane material technologies generally fall into the following categories: [0004] One is to coat the film-forming material through polymerization reaction or directly on the film-forming carrier. For example, China Patent Application No. 201710983784.8 discloses a seawater desalination membrane ...

Claims

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Application Information

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IPC IPC(8): B22F3/105B22F3/11C22C1/05C02F1/44B01D71/02B01D61/36B01D67/00C02F103/08C02F101/30
CPCB01D61/364B01D67/0044B01D71/024B22F3/105B22F3/11B22F2003/1051C02F1/447C02F2101/30C02F2103/08C02F2305/10C22C1/05Y02A20/131
Inventor 崔洪芝李振奎魏娜王欢欢田健王新震
Owner SHANDONG UNIV OF SCI & TECH
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