Plant bionic high-concentration-salt-resistant solar evaporator device and preparation method and application thereof

A plant bionic and solar energy technology, which is applied in the field of plant bionic anti-high salt solar evaporation devices and its preparation, can solve the problems of affecting light absorption and water vapor escape, high cost of photothermal conversion materials, and obstacles to large-scale production and application. Achieve high light-to-heat conversion efficiency, good light absorption performance, and speed up the escape of steam

Active Publication Date: 2022-03-29
HAINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Commonly used photothermal conversion materials are expensive, such as platinum-nickel alloys, gold nanoparticles, silver nanoparticles and other precious metal materials
[0005] (2) The preparation process is complicated, the steps are cumbersome, and special equipment is often required, and the preparation cost is high, such as carbon nanotubes, MXenes, graphene and other materials, which hinder large-scale production and application
[0006] (3) Most photothermal materials have poor salt t

Method used

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  • Plant bionic high-concentration-salt-resistant solar evaporator device and preparation method and application thereof
  • Plant bionic high-concentration-salt-resistant solar evaporator device and preparation method and application thereof
  • Plant bionic high-concentration-salt-resistant solar evaporator device and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1: A method for preparing a plant bionic anti-high concentrated salt solar evaporation device, which includes the following steps:

[0038] S1. Precursive: Select the stem rod of the reed, cut into large blocks in the longitudinal growth direction, then freeze 45 h at a temperature of -25 ° C, and then add 70 h in a freeze dryer, and stem;

[0039] S2. Stem design: First, the reed stem straw is tied to a top area of ​​3.14cm 2 The height is 1 cm cylinder; secondly, 8 small holes having a diameter of 0.5 mm are hit on the outermost reed stems, and the artificial pores are formed, and then the top of the fake stem is 3 min with alcohol lamp, forming 1mm The thickness of the carbon black layer; finally, through the cotton line through the artificial small hole and the different solutions of different solutions and different concentrations of saline bridges.

Example Embodiment

[0040] Example 2: A method of preparing a plant bionic anti-high concentrated salt solar evaporation device, which includes the following steps:

[0041] S1. Precursive: Select the stem rod of plant ramie, cut into large blocks in the longitudinal growth direction, and then freeze 52 h at a temperature of -15 ° C, then adding the freeze dryer to lyophilize 80 h, and stem;

[0042] S2. Stem design: First, the strand bundle of ramie stalk is 3.14cm 2 The height is 1 cm cylinder; secondly, 8 diameter of 0.5 mm small holes are hit on the ramie stems of the outermost ring, and the artificial small hole is formed, and then the top of the fake stem is 4 minutes in the top of the flames of the alcohol lamp, forming 2mm The thickness of the carbon black layer; finally, through the cotton line through the artificial small hole and the different solutions of different solutions and different concentrations of saline bridges.

Example Embodiment

[0043]Example 3: A method of preparing a plant bionic anti-high concentrated salt solar evaporation device, which includes the following steps:

[0044] S1. Pre-treatment: Select the linse stem rod, cut into large blocks in the longitudinal growth direction, and then freeze 48 h at a temperature of -18 ° C, and then add the freeze dryer to lyophilize 75 h, and the stem;

[0045] S2. Stem design: First, strip of linen stem strains is 3.14cm 2 The height is 1 cm cylinder; secondly, 8 small holes having a diameter of 0.5 mm are hit on the rim stems of the outermost ring, and the artificial small hole is formed, and then the top of the pseudo-stem is 2 min with alcohol lamp. Mm thick carbon black layer;

[0046] The beneficial effects of the present invention are illustrated by experiments:

[0047] 1 A method of preparing a plant bionic anti-high concentrated salt solar evaporation device, including the following steps:

[0048] S1. Precursive: Select the stem bar of bananas to cut i...

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Abstract

The invention discloses a plant bionic high-concentration-salt-resistant solar evaporator device and preparation and application thereof. According to the method, plant bionics with the plant stems as the photothermal conversion material are adopted for the first time, waste plant stems are recycled, waste is turned into wealth, and air pollution caused by plant stem incineration is effectively improved. According to the method, the top surface of the plant stem is carbonized by using an alcohol lamp, the carbon black layer is formed through simple oxidation, the bionic top carbonized plant cauloid is prepared, and the method is simple in technological process, convenient to operate, good in light absorption performance and high in photo-thermal conversion efficiency. The plant stalks are carbonized after being manually punched, then the cotton threads penetrate into the holes for drainage, one-way jet flow transmission can be achieved through the capillary acting force of the cotton threads by means of driving force generated by the height difference and the concentration difference of solutions, it can be guaranteed that the salt concentration on the surface of the evaporator cannot reach the saturation state while sufficient water supply is guaranteed, and the evaporation efficiency is improved. Therefore, the limitation that a traditional plant bionic solar evaporator is unstable and prone to salt deposition in the environment of high-concentration saline water and waste water for a long time is broken through.

Description

technical field [0001] The invention belongs to the technical field of desalination treatment of high-concentration salt water, and in particular relates to a plant bionic anti-high-concentration salt solar evaporation device and a preparation method and application thereof. Background technique [0002] However, the lack of resources has become an indisputable fact, especially with the modernization of industrial technology, the only fresh water resources have also been greatly damaged. At present, the fresh water that humans can directly use comes from groundwater, lake fresh water and river water. With the deteriorating environment, these fresh water resources are gradually scarce, especially in some arid areas and island areas. In arid areas, water shortages are caused by too little surface and shallow groundwater, while most of the water storage in islands and coastal areas is sea water, with insufficient fresh water resources. Therefore, desalination of seawater will ...

Claims

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Application Information

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IPC IPC(8): C02F1/14C02F1/04C02F103/08
CPCC02F1/14C02F1/048C02F2103/08Y02A20/142Y02A20/124
Inventor 肖娟秀罗文琪郭阳蔡栋赵芃冯建波吕荣鑫李桂秋谭琳惠韩彩娜沈义俊王东
Owner HAINAN UNIVERSITY
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