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A preparation method based on alkali-activated porous carbonized wood chips accumulation bed material and its application in solar desalination seawater

A technology of stacked bed and alkali activation, applied in chemical instruments and methods, seawater treatment, carbon compounds, etc., can solve the problems of high cost, complex manufacturing process, high price, etc., achieve strong hydrophilicity, reduce production cost, and achieve high efficiency. The effect of solar absorption capacity

Active Publication Date: 2022-07-01
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these materials are expensive, require complex manufacturing processes, and the cost required for large-scale applications is relatively high

Method used

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  • A preparation method based on alkali-activated porous carbonized wood chips accumulation bed material and its application in solar desalination seawater
  • A preparation method based on alkali-activated porous carbonized wood chips accumulation bed material and its application in solar desalination seawater
  • A preparation method based on alkali-activated porous carbonized wood chips accumulation bed material and its application in solar desalination seawater

Examples

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Embodiment 1

[0035] A preparation method based on alkali-activated porous carbonized wood chips accumulation bed material, comprising the following steps:

[0036] (1) Collect wood chips produced by processing wood, and obtain wood chips with a particle size of about 100 μm through screening treatment;

[0037] (2) Weigh about 4g of wood chips, put the wood chips into the cold pressing mold; press the wood chips to form by the pressure of 40MPa, and the holding time is 150s;

[0038] (3) placing the wood chip accumulation bed obtained in step (2) in a tube furnace, sintering for 25min under the condition of a vacuum environment and a temperature of 180°C, and the temperature rise rate of the tube furnace is 8°C / min to obtain bonding a bed of sawdust accumulation;

[0039] (4) The bonded wood chips piled bed obtained in step (3) was placed in a KOH ethanol solution of 0.04 g / mL and soaked for 12 minutes, filtered, and then the excess KOH was washed with ethanol and deionized water respecti...

Embodiment 2

[0042] A preparation method based on alkali-activated porous carbonized wood chips accumulation bed material, comprising the following steps:

[0043] (1) Collect wood chips produced by processing wood, and obtain wood chips with a particle size of about 100 μm through screening treatment;

[0044] (2) Weigh about 4g of wood chips, put the wood chips into the cold pressing mold; press the wood chips to form by the pressure of 40MPa, and the holding time is 100s;

[0045] (3) placing the sawdust stacking bed obtained in step (2) in a tube furnace, sintering for 15 minutes in a vacuum environment at a temperature of 250 °C, and the temperature rise rate of the tube furnace is 5 °C / min, to obtain bonding a bed of sawdust accumulation;

[0046] (4) The bonded wood chips piled bed obtained in step (3) was placed in a 0.1 g / ml KOH ethanol solution to soak for 6 minutes, filtered, and then the excess KOH was washed with ethanol and deionized water respectively, and placed in vacuum ...

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Abstract

The invention discloses a preparation method based on an alkali-activated porous carbonized wood chip accumulation bed material and its application in solar energy desalination of seawater. A porous wood chip accumulation bed is obtained; then the porous wood chip accumulation bed is put into a quartz tube furnace for vacuum sintering, the sintered wood chip accumulation bed is placed in a potassium hydroxide ethanol solution to soak for 5-15 minutes, washed and dried, and then placed It is obtained by vacuum carbonization in a tube furnace. The invention utilizes the wood chip waste produced by processing wood, and prepares the light-to-heat conversion material based on the wood chips, and has the advantages of low cost, simple production process, and large-scale production. Hydrophilic capability, which can quickly transport water to the evaporating surface, ensuring efficient solar desalination.

Description

technical field [0001] The invention relates to the fields of solar energy photothermal conversion and seawater desalination, in particular to a preparation method based on an alkali-activated porous carbonized wood chip accumulation bed material and its application in solar energy desalination of seawater. Background technique [0002] The shortage of fresh water is considered one of the most serious global challenges of our time. Various measures have been taken to meet the growing demand for water resources, among which desalination is an important measure to alleviate the shortage of freshwater resources. The comprehensive utilization of seawater resources through the use of solar energy for seawater desalination has important economic and social benefits, and has broad market prospects, which is of great significance to the sustainable development of human society. [0003] Conventional solar desalination methods typically use volumetric absorbers, such as nanoparticle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/324C01B32/348C02F1/14C02F103/08
CPCC01B32/324C01B32/348C02F1/14C02F2103/08Y02A20/212Y02A20/124Y02A20/142
Inventor 黄丛亮吴东旭
Owner CHINA UNIV OF MINING & TECH
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