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Photothermal evaporation composite material as well as preparation method and use thereof

A composite material and light-absorbing material technology, which is applied in the field of photothermal evaporation composite material and its preparation and use, can solve the problems of complex seawater desalination equipment and high cost, and achieve the effects of low cost and high use efficiency

Inactive Publication Date: 2018-11-23
斌源材料科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a photothermal evaporation composite material and its preparation method and application, which fills up the deficiencies of the prior art and is used to solve the problems of complex seawater desalination equipment in the prior art. high cost problem

Method used

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  • Photothermal evaporation composite material as well as preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] All reaction containers and stirring paddles were cleaned with alcohol and deionized water. 100g of metakaolin (provided by Shandong Qufu Tianbojing Carbon Technology Co., Ltd.) was added to 50ml of deionized water, and stirred at a high speed for 2min; 2g of hydrogen peroxide (30wt%) was added, and the stirring was continued to obtain a slurry; The carbon material is compounded in the mold and placed in a furnace at 50°C. After 12 hours of heat preservation, the mold is opened and taken out to obtain a porous hydrophilic composite material. The composite material is processed to the design size: the diameter of the hydrophilic material is 50mm, and the thickness of the thermal insulation material 25mm; the light-absorbing material has a diameter of 50mm and a thickness of 3mm.

[0058] The material structure prepared in this embodiment is as follows figure 1 shown. In this embodiment, the photothermal evaporation composite material includes: a porous light-absorbing ...

Embodiment 2

[0061] All reaction containers and stirring paddles were cleaned with alcohol and deionized water. Add 70ml of deionized water to 150g of kaolin (provided by Shandong Qufu Tianbojing Carbon Technology Co., Ltd.), and stir at high speed for 3 minutes; add 4g of sodium hydroxide solution (10wt%), and continue to stir to obtain a slurry; use 20g of slurry to mix 20g of porous hydrophilic Viscose fiber and 2g of mesoporous carbon material are composited in a mold, and placed in a furnace at 70°C. After 18 hours of heat preservation, the mold is opened and taken out to obtain a porous hydrophilic composite material. The composite material is processed to the design size: hydrophilic The diameter of the material is 30mm, and the thickness of the thermal insulation material is 15mm; the diameter of the light-absorbing material is 30mm, and the thickness is 1mm.

[0062] When used for seawater desalination, the radiation intensity is 1kW / m under normal light AM1.5G 2 Under light cond...

Embodiment 3

[0065] All reaction containers and stirring paddles were cleaned with alcohol and deionized water. 180g of fly ash (provided by Shandong Qufu Tianbojing Carbon Technology Co., Ltd.) was added to 80ml of deionized water, and stirred at a high speed for 5 minutes; 7g of industrial sodium silicate (70wt%) was added, and the stirring was continued to obtain a slurry; Water cotton hemp material and XXG graphene are composited and placed in a mold, and placed in a 90°C furnace. After 24 hours of heat preservation, the mold is opened and taken out to obtain a shaped porous hydrophilic composite material. The composite material is processed to the design size: pro The diameter of the water material is 40mm, and the thickness of the heat preservation material is 20mm; the diameter of the light-absorbing material is 40mm, and the thickness is 2mm.

[0066] When used for seawater desalination, the radiation intensity is 1kW / m under normal light AM1.5G 2 Under light conditions, the desal...

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Abstract

The invention provides a photothermal evaporation composite material as well as a preparation method and use thereof. The composite material at least comprises a porous light-absorbing material layer,a porous hydrophilic material layer and a thermal insulation material layer, wherein the porous light-absorbing material layer is arranged on the porous hydrophilic material layer; the porous hydrophilic material layer is arranged on the thermal-insulation material layer; the porous hydrophilic material layer downwards extends to form a water-absorbing column which passes through the thermal-insulation material layer; the photothermal evaporation material can float on the water; the porous photothermal material has a specific surface area greater than or equal to 300 m<2> / g, and absorbency greater than or equal to 80%; the porous hydrophilic material has a hydrophilic group; the thermal-insulation material contains a lyophobic group, and has a heat conduction coefficient smaller than or equal to 0.3 Wm<-1>K<-1>. The material can be used for water desalting, is high in efficiency and is low in cost.

Description

technical field [0001] The invention relates to a photothermal evaporation composite material, a preparation method thereof, a preparation method and an application thereof. Background technique [0002] Freshwater resources are a serious and urgent problem for our country and the world. The fresh water that humans rely on for survival is less than 3% of the total surface water, and with the increase of population, the pollution of the environment, the shortage of fresh water resources, the desalination of seawater and brackish water, the treatment and purification of sewage is particularly urgent. This is also an important way to solve fresh water resources and protect the environment. [0003] In recent years, the natural environment has been deteriorating and traditional fuels have been continuously consumed, and people's demand for renewable and clean energy has become increasingly urgent. Solar energy and wind energy are very valuable renewable green energy sources, a...

Claims

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Application Information

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IPC IPC(8): C02F1/14C02F103/08
CPCC02F1/14C02F2103/08Y02A20/124Y02A20/142Y02A20/212
Inventor 赵斌元刘丰华吴卫平周洁赖奕坚杨海燕张荻范同祥
Owner 斌源材料科技(上海)有限公司
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