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Portable efficient seawater desalting material and preparation and use method thereof

A portable, high-efficiency technology for chemical instruments and methods, seawater treatment, general water supply conservation, etc., to achieve the effect of reduced possibility, low cost, and overall weight reduction

Pending Publication Date: 2019-10-22
HEILONGJIANG HUASHENG GRAPHITE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention solves the problems existing in the prior art based on the following inventive concepts: 1) as figure 1 As shown, the inner and outer double-layer design is adopted, and the inner layer is a water-absorbing core material to absorb and store seawater to realize the "solidification" of seawater, which is not only easy to carry, but also avoids polluting the collected fresh water

Method used

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  • Portable efficient seawater desalting material and preparation and use method thereof
  • Portable efficient seawater desalting material and preparation and use method thereof
  • Portable efficient seawater desalting material and preparation and use method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A preparation method of a portable high-efficiency seawater desalination material, the method comprising the following steps:

[0030] Step 1: Add 0.5-3 mg of photothermal material and 5-10 mg of sodium alginate to each milliliter of water, and obtain mixed liquid A after ultrasonication; the photothermal material is graphene or carbon nanotube or graphite or carbon black or redox graphene or copper sulfide nanoparticles or carbon nanoparticles or nickel or cobalt-nickel alloy nanoparticles;

[0031] Step 2: Spread the mixed solution A on the base material according to the ratio of 800-4000 ml of mixed solution A loaded on the base material per square meter;

[0032] Step 3: Freeze-dry the base material loaded with mixed solution A and then soak it in a calcium chloride solution with a mass fraction of 5% to obtain composite material B;

[0033] Step 4: Wrap the composite material B on the sponge, absorbent cotton or hydrogel to obtain a portable high-efficiency seawat...

Embodiment 2

[0037] A preparation method of a portable high-efficiency seawater desalination material, the method comprising the following steps:

[0038] Step 1: Add 0.5-3 mg of photothermal material to a solvent with a volume ratio of 8:1-3:1 per milliliter of water and ethanol, and ultrasonically prepare a homogeneous mixture E; the photothermal material is graphene or carbon nanotubes or graphite or carbon black or redox graphene or copper sulfide nanoparticles or carbon nanoparticles or nickel or cobalt-nickel alloy nanoparticles;

[0039] Step 2: Add 7.5-15 mg of agarose and 80-150 mg of urea to each ml of mixed solution E to obtain mixed solution F. Heating the mixed solution F to 80 degrees Celsius for 30 minutes to obtain the mixed solution G;

[0040] Step 3: According to the ratio of 800-4000 ml of mixed solution G loaded on the base material per square meter, pour the mixed solution G at 80-90 degrees Celsius on the base material, cool and freeze-dry the obtained material, and...

Embodiment 3

[0043] This embodiment is basically the same as Embodiment 1 and Embodiment 2, and it is characterized in that the described water-absorbing inner core material is sponge or absorbent cotton or hydrogel; the described cotton textile material or the hydrophilic material with channel structure is cotton towel Composite material or cotton pad or cotton cloth or bamboo fiber paper; the portable high-efficiency seawater desalination material is cylindrical, with a diameter of 1-10 cm and a height of 5-20 cm.

[0044]Technical description: The experimental test shows that the core material can absorb and store seawater 6-20 times its own weight. The shape of the portable high-efficiency seawater desalination material has an important impact on determining the efficiency of receiving sunlight and whether the material can be used continuously. Salt particles will precipitate on the surface only when the salt concentration in the entire 3D photothermal water storage material reaches sat...

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Abstract

The invention relates to a seawater desalting material and a preparation and use method thereof. The material consists of a water absorption core material and a water locking photo-thermal shell material in designing of inner and outer double layers, wherein the inner layer is the water absorption core material for absorbing seawater, is used for achieving 'immobilization' of seawater, and is bothconvenient to carry over and capable of preventing collected fresh water from being contaminated; the outer layer is a composite material consisting of a photo-thermal material, a gel and a substratematerial, and is large in specific surface area, but small in material amount and low in cost. Due to the 3D structure of the material provided by the invention, the material does not need to contactwith seawater or be partially soaked into the seawater, so that the exposure area, that is, the evaporation area, is maximized, and the evaporation speed can be greatly increased; a light solid material is adopted as a raw material, so that the material is convenient to carry over.

Description

technical field [0001] The invention relates to a seawater desalination material and its preparation and use method, in particular to a portable high-efficiency seawater desalination material and its preparation and use method. Background technique [0002] The existing solar photothermal seawater desalination technology usually uses photothermal materials to float on the surface of seawater in seawater pools, absorb sunlight and convert it into heat for evaporating seawater, and the generated steam condenses to finally collect fresh water. The problems existing in the existing technology are concentrated in: 1) The seawater in the seawater pool, especially during the movement of the seawater desalinator, may splash out and pollute the freshwater in the freshwater collection pool; 2) It is difficult to realize portable or movable 3) The photothermal material floats in the seawater pool, and the photothermal effect is mainly concentrated on the surface part of the material fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04C02F1/14C02F103/08
CPCC02F1/04C02F1/14C02F2103/08Y02A20/142Y02A20/212Y02A20/124
Inventor 徐浩兰武萱曹殿学
Owner HEILONGJIANG HUASHENG GRAPHITE CO LTD