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Preparation method of negative ion health board for purifying air

A technology for purifying air and negative ions, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve problems such as high demand and wide pore size distribution, and achieve good adsorption performance and narrow pore size distribution

Inactive Publication Date: 2019-08-06
江苏益飞环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current conventional microporous activated carbon has a wide pore size distribution, which cannot meet high demand applications

Method used

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  • Preparation method of negative ion health board for purifying air

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of an air-purifying negative ion health board, comprising a preparation method of microporous activated carbon, specifically comprising the following steps:

[0022] Step 1, immerse the carbon-containing precursor coal or crop straw in the mixed solution, raise the temperature and reflux for 20 minutes, then add glacial acetic acid, and let it stand for 30 minutes to obtain a treatment solution, the mixed solution is a mixed solution of absolute ethanol and ethyl acetate, Wherein the volume ratio of dehydrated alcohol and ethyl acetate is 2:1, and the adding volume of glacial acetic acid is 5% of mixed liquor volume;

[0023] Step 2: Gradually raise the temperature of the treatment solution to 400°C at a heating rate of 2-3°C / min, keep it for 60 minutes, then raise the temperature to 700°C, keep it for 20 minutes, and obtain the carbonized material;

[0024] Step 3, add micropowder silica gel and absolute ethanol to the carbonized material, heat to ...

Embodiment 2

[0027] A preparation method of an air-purifying negative ion health board, comprising a preparation method of microporous activated carbon, specifically comprising the following steps:

[0028] Step 1, immerse the carbon-containing precursor coal or crop straw in the mixed solution, raise the temperature and reflux for 22 minutes, then add glacial acetic acid, and let it stand for 35 minutes to obtain a treatment solution, the mixed solution is a mixed solution of absolute ethanol and ethyl acetate, Wherein the volume ratio of dehydrated alcohol and ethyl acetate is 2:1, and the adding volume of glacial acetic acid is 6% of mixed solution volume;

[0029] Step 2: Gradually raise the temperature of the treatment solution to 430°C at a heating rate of 2-3°C / min, keep it for 70 minutes, then raise the temperature to 740°C, keep it for 25 minutes, and obtain the carbonized material;

[0030] Step 3, add micropowder silica gel and absolute ethanol to the carbonized material, heat t...

Embodiment 3

[0033] A preparation method of an air-purifying negative ion health board, comprising a preparation method of microporous activated carbon, specifically comprising the following steps:

[0034] Step 1, immerse the carbon-containing precursor coal or crop straw in the mixed solution, raise the temperature and reflux for 27 minutes, then add glacial acetic acid, and let it stand for 35 minutes to obtain a treatment solution, the mixed solution is a mixed solution of absolute ethanol and ethyl acetate, Wherein the volume ratio of dehydrated alcohol and ethyl acetate is 2:1, and the adding volume of glacial acetic acid is 7% of mixed solution volume;

[0035] Step 2: Gradually raise the temperature of the treatment liquid to 470°C at a heating rate of 2-3°C / min, keep it for 80 minutes, then raise the temperature to 770°C, keep it for 27 minutes, and obtain the carbonized material;

[0036] Step 3, add micropowder silica gel and absolute ethanol to the carbonized material, heat to ...

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Abstract

The invention discloses a preparation method of a negative ion health board for purifying air, the preparation method comprises a preparation method of microporous activated carbon, and the preparation method specifically comprises the following steps: soaking a carbon-containing precursor in a mixed solution, heating and refluxing, adding glacial acetic acid, and standing to obtain a treatment solution; gradually heating the treatment solution, keeping for a certain time, heating and keeping for 20-30 minutes to obtain a carbonized material; adding micropowder silica gel and absolute ethyl alcohol into the carbonized material, heating, boiling, keeping, and filtering to obtain a filter material; finally, washing the filter material by deionized water until the pH value does not change, and then drying to obtain microporous activated carbon. The microporous activated carbon obtained by the method has a good specific surface area, simultaneously achieves ultra-micropore distribution andnarrow micropore distribution, and the adsorption capacity of the negative ion health plate manufactured by using the material is greatly improved.

Description

technical field [0001] The invention belongs to a method for preparing an air-purifying negative ion health board, and in particular relates to a method for preparing activated carbon. Background technique [0002] Activated carbon is also called activated carbon black. It is black powder or massive, granular, honeycomb amorphous carbon, and there are also regular crystalline carbons. In addition to carbon elements, activated carbon also contains two types of admixtures: one is chemically combined elements, mainly oxygen and hydrogen, these elements are left in the carbon due to incomplete carbonization, or in the activation process, foreign Non-carbon elements are chemically combined with the surface of activated carbon. For example, when activated by water vapor, the surface of activated carbon is oxidized or oxidized by water vapor; another type of admixture is ash, which is the inorganic part of activated carbon; ash in activated carbon is easy to cause secondary pollut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/312
CPCC01B32/312
Inventor 毛创建
Owner 江苏益飞环保科技有限公司