Preparation method of biomass carbon material for solar evaporated water and application of biomass carbon material

A technology of biomass carbon and solar energy, applied in solar thermal power generation, carbon preparation/purification, solar thermal energy, etc., can solve the problem of incompatibility between light-to-heat conversion efficiency and cost-effectiveness, so as to improve the utilization rate of solar energy and accelerate the evaporation rate , the effect of reducing heat loss

Pending Publication Date: 2019-05-10
HEZE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the light-to-heat conversion efficiency and cost-effectiveness of these technologies cannot be balanced

Method used

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  • Preparation method of biomass carbon material for solar evaporated water and application of biomass carbon material
  • Preparation method of biomass carbon material for solar evaporated water and application of biomass carbon material
  • Preparation method of biomass carbon material for solar evaporated water and application of biomass carbon material

Examples

Experimental program
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Effect test

Embodiment 1

[0026] (1) Wash the corncobs with distilled water to remove impurities, dry, pulverize, and sieve, put them into a porcelain boat and put them in a tube furnace. 2 Atmosphere, at 5°C min -1 The heating rate was increased to 750°C, and the temperature was kept at room temperature for 2 hours. After drying, the corncob-based carbon material was obtained (the SEM image of the material is shown in figure 2 ).

[0027] (2) After grinding 20 mg of corncob-based carbon material for half an hour, disperse it in distilled water, and ultrasonically disperse it for 30 minutes to obtain a corncob-based carbon suspension. The corncob-based carbon material suspension was placed on a circular filter paper with a diameter of 4 cm for vacuum filtration, and dried at 60°C for 2 hours to obtain a filter paper loaded with corncob-based carbon materials. The bent filter paper did not scatter powder.

[0028] (3) a cylindrical sponge with a diameter of 3 cm and a thickness of 2 cm is placed in t...

Embodiment 2

[0036] (1) Remove the skin of the corn stalk, remove the joint, and cut it into a length of 3-4cm. After drying to remove moisture, put it into a porcelain boat and put it in a tube furnace. 2 Atmosphere, at 5°C min -1 The heating rate was increased to 800°C, and the temperature was kept for 2 hours to reach room temperature. After drying, the corn stalk-based carbon material was obtained and ground into powder.

[0037](2) Take 8 mg of corn stalk carbon material, disperse it in distilled water, and ultrasonically disperse it for 30 min to obtain a corn stalk-based carbon suspension. The carbon material suspension was vacuum-filtered on a circular filter paper with a diameter of 4 cm, and dried at 60° C. for 2 hours to obtain a filter paper loaded with corn stalk-based carbon materials.

[0038] (3) a cylindrical sponge with a diameter of 3 cm and a thickness of 2 cm is placed in the middle of a polystyrene circular foam ring with a thickness of 0.5 cm and a height of 2 cm, f...

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Abstract

The invention discloses a preparation method of a biomass carbon material for solar evaporated water and an application of the biomass carbon material. The method includes the steps: taking agricultural waste as a raw material, and performing crushing, screening and high-temperature carbonization on the agricultural waste to prepare the biomass carbon material; ultrasonically dispersing biomass carbon in distilled water or ethyl alcohol-water solution to obtain biomass carbon suspension, and performing vacuum filtration and drying on the suspension to obtain filter paper loaded the biomass carbon; placing the filter paper on a sponge wrapping polymer foam to obtain a solar thermal collector floating on the surface of water, and evaporating water by solar energy. According to the method, the biomass carbon material is low in cost and easy to acquire and serves as a photo-thermal conversion material, the polymer foam serves as a heat insulation material, water is conveyed by the sponge in middle, solar distilled water can be simply and rapidly acquired, the method solves the problems that an existing method is high in cost, complicated in preparation condition, low in photo-thermal conversion rate and the like when water is evaporated and purified by the solar energy, and the problem of pollution of agricultural waste can be relieved.

Description

technical field [0001] The invention relates to the field of solar energy evaporation water treatment, in particular to a preparation method and application of a biomass carbon material used for solar energy evaporation water. Background technique [0002] The earth is rich in water resources, but the fresh water resources for direct use by humans are extremely limited. Recently, with the increasing population, industrial development and environmental pollution, the shortage of fresh water resources has become an important factor hindering the sustainable development of human beings. Obtaining fresh water from seawater, which accounts for 96% of the earth's total water storage, is one of the main ways to solve the scarcity of fresh water resources. The two most common methods of obtaining fresh water today are through reverse osmosis membranes and thermal distillation. However, the osmotic membranes used in the reverse osmosis membrane method require high-cost maintenance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/14F24S20/70C01B32/05
CPCY02B10/20Y02E10/47Y02P20/133Y02A20/212
Inventor 郭明晰武晶斌李风海薛守庆樊红莉
Owner HEZE UNIV
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