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Preparation method of porous activated carbon for air purification

A porous activated carbon and air purification technology, applied in the field of activated carbon, can solve the problems of limited purification adsorption performance, uneven pore size distribution, and low purification efficiency of activated carbon, and achieve the effect of improving adsorption performance, uniform pore size distribution, and good adsorption performance

Inactive Publication Date: 2017-07-28
ZHENJIANG HUAYU ENVIRONMENTAL PROTECTION EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the purification efficiency of activated carbon is not high, which is mainly reflected in the uneven distribution of pore size and limited purification and adsorption performance.

Method used

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  • Preparation method of porous activated carbon for air purification

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Effect test

Embodiment 1

[0019] A preparation method of porous activated carbon for air purification, comprising the following steps:

[0020] Step 1, drying and pulverizing the coconut shell, the particle size after pulverization is 800-1000 microns to obtain coconut shell particles;

[0021] Step 2, get 30 parts of coconut shell particles in parts by weight and 1 part of maleic anhydride, 0.5 part of maleic anhydride, 1 part of toluene diisocyanate, 5 parts of diethylene glycol and 100 parts of solvent mix, then as In a tube furnace, heat up and carbonize under the protection of an inert gas. After carbonization, wash with deionized water until neutral, filter and dry at 100°C. Grind to a particle size of 1-3mm to obtain primary particles. The solvent is a mixture of ethanol and isopropanol, the volume ratio of ethanol to isopropanol is 5:1, the heating rate of carbonization is 10°C / min, and the carbonization temperature is 800°C;

[0022] Step 3: Mix 10 parts of primary granules with 1 part of sod...

Embodiment 2

[0024] A preparation method of porous activated carbon for air purification, comprising the following steps:

[0025] Step 1, drying and pulverizing the coconut shell, the particle size after pulverization is 800-1000 microns to obtain coconut shell particles;

[0026] Step 2, get 35 parts of coconut shell particles in parts by weight and 2 parts of maleic anhydride, 0.6 part of maleic anhydride, 2 parts of toluene diisocyanate, 6 parts of diethylene glycol and 120 parts of solvent mix, then as for In a tube furnace, heat up carbonization under the protection of an inert gas. After carbonization, wash with deionized water until neutral, filter and dry at a temperature of 105°C. Grind to a particle size of 1-3mm to obtain primary particles. The solvent is a mixture of ethanol and isopropanol, the volume ratio of ethanol and isopropanol is 5:1, the heating rate of carbonization is 11°C / min, and the carbonization temperature is 900°C;

[0027] Step 3: Mix 10 parts of primary gra...

Embodiment 3

[0029] A preparation method of porous activated carbon for air purification, comprising the following steps:

[0030] Step 1, drying and pulverizing the coconut shell, the particle size after pulverization is 800-1000 microns to obtain coconut shell particles;

[0031] Step 2, get 36 parts of coconut shell particles in parts by weight and 3 parts of maleic anhydride, 0.8 part of maleic anhydride, 2 parts of toluene diisocyanate, 7 parts of diethylene glycol and 140 parts of solvent mix, then as for In a tube furnace, heat up carbonization under the protection of an inert gas. After carbonization, wash with deionized water until neutral, filter and dry at a temperature of 110°C. Grind to a particle size of 1-3mm to obtain primary particles. The solvent is a mixture of ethanol and isopropanol, the volume ratio of ethanol to isopropanol is 5:1, the heating rate of carbonization is 12°C / min, and the carbonization temperature is 900°C;

[0032] Step 3: Mix 10 parts of primary gran...

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Abstract

The invention discloses a preparation method of porous activated carbon for air purification. The preparation method comprises the following steps: sun-drying and crushing coconut shells to obtain coconut shell particles; mixing the coconut shell particles and maleic anhydride, maleic anhydride, toluene diisocynate, 5 to 10 parts of diglycol and a solvent, putting the mixture into a tubular furnace, performing heating carbonization under the protection condition of inert gases, washing with deionized water until the pH value is 7 after carbonization, filtering, drying and grinding to obtain primary particles; and mixing the primary particles, sodium bicarbonate, polyethylene glycol and water, heating to boiling, maintaining, filtering and drying to obtain porous activated carbon for air purification. The activated carbon obtained by the method provided by the invention has high pore diameter uniformity and adsorbing property.

Description

technical field [0001] The invention belongs to the field of activated carbon, and in particular relates to a preparation method of porous activated carbon for air purification. Background technique [0002] The problem of air pollution has attracted more and more attention in recent years. The atmosphere is a mixture composed of a certain proportion of nitrogen, oxygen, carbon dioxide, water vapor and solid impurity particles. Various natural changes tend to cause changes in the composition of the atmosphere. At present, air pollution mainly comes from industrial emissions, domestic heating gas emissions, vehicle exhaust, incineration, etc. These problems have increasingly affected people's normal life. Air pollutants are harmful to the human body in many ways, the main manifestations are respiratory diseases and physiological dysfunction, as well as diseases caused by stimulation of mucous membrane tissues such as eyes and nose. When the concentration of pollutants in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/312
CPCC01P2006/12C01P2006/17Y02P20/133
Inventor 张瑜
Owner ZHENJIANG HUAYU ENVIRONMENTAL PROTECTION EQUIP MFG
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