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Preparation method of seawater desalination aerogel with high heat collection effect

An aerogel and heat collection technology, applied in aerogel preparation, chemical instruments and methods, seawater treatment, etc., can solve the problems of reducing water vapor mass transfer resistance, poor solar seawater evaporation performance, and large mass transfer resistance, etc. Achieve the effect of increasing seawater evaporation rate, improving photothermal conversion efficiency, and reducing mass transfer resistance

Pending Publication Date: 2021-06-11
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, common photothermal conversion materials include black metal nanoparticles, transition metal oxide nanoparticles, graphene, carbon nanotubes, carbon fibers and other materials. Therefore, the mass transfer resistance encountered in the process of water vapor volatilization is relatively large, and the evaporation of solar seawater poor performance

Method used

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  • Preparation method of seawater desalination aerogel with high heat collection effect
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  • Preparation method of seawater desalination aerogel with high heat collection effect

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Embodiment 1

[0030] The preparation method of seawater desalination aerogel with high heat collection effect described in the present invention comprises the following steps:

[0031] 1) Cu NWs prepared by hydrothermal method;

[0032] 2) Disperse Cu NWs in the solution, add pyrrole and hydrogen peroxide, and then stir to make pyrrole polymerize, grow pyrrole in situ on the surface of CuNWs, and obtain Cu NW@PPy;

[0033] 3) Using Cu NW@PPy to prepare seawater desalination airgel with high heat collection effect by oriented freezing technology using ice template method.

[0034] The concrete operation of step 1) is:

[0035] Take polyvinylpyrrolidone, CuCl 2 2H 2 O, glucose, octadecylamine, hexadecylamine and deionized water, then polyvinylpyrrolidone, CuCl 2 2H 2 O, glucose, octadecylamine, cetylamine and deionized water are mixed and stirred to obtain a blue emulsion, which is then poured into a high-pressure reactor for hydrothermal reaction. After the reaction is completed, centri...

Embodiment 2

[0043] The preparation method of seawater desalination aerogel with high heat collection effect described in the present invention comprises the following steps:

[0044] 1) Cu NWs prepared by hydrothermal method;

[0045] 2) Disperse Cu NWs in the solution, add pyrrole and hydrogen peroxide, and then stir to make pyrrole polymerize, grow pyrrole in situ on the surface of CuNWs, and obtain Cu NW@PPy;

[0046] 3) Using Cu NW@PPy to prepare seawater desalination airgel with high heat collection effect by oriented freezing technology using ice template method.

[0047] The concrete operation of step 1) is:

[0048] Take polyvinylpyrrolidone, CuCl 2 2H 2 O, glucose, octadecylamine, hexadecylamine and deionized water, then polyvinylpyrrolidone, CuCl 2 2H 2 O, glucose, octadecylamine, cetylamine and deionized water are mixed and stirred to obtain a blue emulsion, which is then poured into a high-pressure reactor for hydrothermal reaction. After the reaction is completed, centri...

Embodiment 3

[0056] The preparation method of seawater desalination aerogel with high heat collection effect described in the present invention comprises the following steps:

[0057] 1) Cu NWs prepared by hydrothermal method;

[0058] 2) Disperse Cu NWs in the solution, add pyrrole and hydrogen peroxide, and then stir to make pyrrole polymerize, grow pyrrole in situ on the surface of CuNWs, and obtain Cu NW@PPy;

[0059] 3) Using Cu NW@PPy to prepare seawater desalination airgel with high heat collection effect by oriented freezing technology using ice template method.

[0060] The concrete operation of step 1) is:

[0061] Take polyvinylpyrrolidone, CuCl 2 2H 2 O, glucose, octadecylamine, hexadecylamine and deionized water, then polyvinylpyrrolidone, CuCl 2 2H 2 O, glucose, octadecylamine, cetylamine and deionized water are mixed and stirred to obtain a blue emulsion, which is then poured into a high-pressure reactor for hydrothermal reaction. After the reaction is completed, centri...

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Abstract

The invention discloses a preparation method of seawater desalination aerogel with a high heat collection effect. The preparation method comprises the following steps: 1) preparing Cu NWs by using a hydrothermal method; 2) dispersing the Cu NWs in the solution, then adding pyrrole and hydrogen peroxide, stirring to enable the pyrrole to be subjected to polymerization reaction, and enabling the pyrrole to grow on the surface of the CuNWs in situ to obtain Cu NW@PPy; and 3) preparing the seawater desalination aerogel with a high heat collection effect by utilizing Cu NW@PPy and adopting an oriented freezing technology of an ice template method, and the gel prepared by the method effectively reduces mass transfer resistance encountered in a water vapor volatilization process and improves the solar seawater evaporation performance.

Description

technical field [0001] The invention belongs to the technical field of seawater desalination and sewage purification, and relates to a preparation method of seawater desalination airgel with high heat collection effect. Background technique [0002] Fresh water is an important resource for human survival. With the rapid development of industry, the demand for clean water and the discharge of sewage are constantly increasing. The development of seawater / sewage evaporation technology is one of the effective ways to solve the problem of water shortage in the 21st century. As a renewable, pollution-free and low-cost technology, solar seawater evaporation technology has played an important role in seawater desalination / wastewater purification and other industries in recent years. At present, solar water purification technology has made great progress in terms of equipment design and process flow. The preparation of high-efficiency solar photothermal conversion materials is the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/14B01J13/00C02F103/08
CPCC02F1/14B01J13/0091C02F2103/08Y02A20/124Y02A20/142Y02A20/212
Inventor 赵宇鑫徐显明严孝清王维张志翔刘利群袁慧敏
Owner XI AN JIAOTONG UNIV
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