With the increase in air pollution, equipment and supplies for air purification are selling well. Air purification activated carbon is one of them. Air purification activated carbon is a kind of activated carbon, using high-quality activated carbon by special treatment, air purification activated carbon has a strong adsorption capacity, and can effectively adsorb harmful substances in the air, and purify the air. Air purification-activated carbon is divided into column-activated carbon and granular granular-activated carbon.
What is activated carbon for air purification?
Air-purifying activated carbon is a kind of cylindrical activated carbon. It is high-quality activated carbon specially treated for special purification of polluted air. Only activated carbon with high hardness, high strength, and microporous pores can be used as air-purifying carbon. Fruit shell carbon and coal can be used as raw materials for air purification carbon. Among them, coconut shell-activated carbon has the best effect.
Activated carbon is made from materials with high carbon content and developed pores, such as coal, fruit shells, wood, bone, petroleum residue, etc. It is first carbonized and then activated at a high temperature of 800 to 1500 degrees to form developed micropores and mesopores, to make its specific surface area and adsorption capacity meet certain requirements.
The production of ordinary activated carbon is generally divided into two processes, first: carbonization, second: activation. Activated carbon is divided into hundreds of types such as decoloring activated carbon, water purification activated carbon, air purification activated carbon, heavy metal recycling activated carbon, etc. It has a wide range of uses and is the most effective adsorbent material that can be achieved at the current scientific level.
What is the function of activated carbon for air purification?
Activated carbon for air purification is made of high-quality wood or coconut shell, through deep activation and a unique pore size adjustment process, the activated carbon has abundant holes, and the size of the holes is slightly larger than that of the toxic gases, and the specific surface area is >1300 square meters/gram, which is highly efficient for the adsorption of benzene, formaldehyde, ammonia, and other toxic and harmful gases, and it can effectively remove the gaseous pollutants and harmful odorous substances in the indoor air, and then achieve the purpose of reducing pollution and purifying the air. It can effectively remove gaseous pollutants and harmful odorous substances in indoor air, thus achieving the purpose of reducing pollution and purifying air.
It is used in industry: deodorization and de-toxicity of various workplaces, air conditioning filters, air purification machines, central air conditioning filtration systems, air filters, air purifiers, automobile filters, and so on.
What are the classifications of activated carbon for air purification?
1. Columnar activated carbon
CTC 90-140%
Benzene adsorption 45-55%
Diameter 3mm, 4mm
Strength: 95-98
2. Granular activated carbon
CTC 90-140%
Benzene adsorption 45-55%
Particle size: 4×8 6×14 14×24 24×48 optional
What is the principle of air purification of activated carbon?
1. Unique pore structure
Activated carbon is a kind of microcrystalline carbon material with a black appearance, developed internal pore structure, large specific surface area, and strong adsorption capacity, which is mainly made of carbon-containing materials. Activated carbon material has a large number of micropores that are invisible to the naked eye. 1 gram of activated carbon material has a surface area of 800-3000 square meters after unfolding the micropores, and the surface area of the special-purpose ones is even higher. In other words, in an activated carbon particle the size of a grain of rice, the internal surface area of the micropores may be equivalent to the size of a living room. It is these highly developed pore structures, such as human capillaries, that give activated carbon its excellent adsorption properties.
2. Interaction forces between molecules
Also known as "van der Waals gravity". Although the speed of molecular movement is affected by temperature and material, it is always in motion in the microenvironment. Because of the mutual attraction between molecules, when a molecule is captured by the activated carbon pore into the activated carbon pore, due to the reason of mutual attraction between molecules, it will lead to more molecules being attracted continuously until the activated carbon pore is full.
How to buy activated carbon for air purification
1. The same weight, the larger the volume, the stronger the adsorption capacity.
To improve the adsorption performance of activated carbon, only as much as possible to create a pore structure in the activated carbon, the more pores, the more fluffy activated carbon, and the relative density will be lighter, so good activated carbon will feel lighter, in the case of the same weight of the package, the performance of the activated carbon will be better than the volume of the poor-quality activated carbon is much larger.
2. Fruit shell carbon and coconut shell carbon, high iodine value is good carbon.
Activated carbon gas purification by adsorption capacity, there is an important adsorption capacity indicator - iodine value, the higher the iodine value, the stronger the adsorption capacity. The speculation is hot is coconut shell carbon, but some not activated or technology does not pass the coconut shell carbon iodine value may not be able to reach 500, and the sea Xin air purification of special high-grade fruit shell carbon iodine value of up to 800-1200, adsorption capacity to reach the first-class brand of air purification carbon effects.
3. Charcoal bag permeability is very important
Put the charcoal bag in the mouth and blow, if the gas can easily pass through the charcoal bag, it means that the air through the charcoal bag is good. If the charcoal bag does not feel like blowing, it is difficult for the air to pass through, then it is difficult to play a big role in the good charcoal inside. As a passive adsorption product, the air must be able to freely penetrate the deep layer of the charcoal bag for the charcoal bag to play a good role in air purification and adsorption. Theoretically speaking, the charcoal bag to tear open the charcoal directly into the tray may be the best way to pass through the air, of course, this way of environmental health has a certain impact.
4. Bamboo charcoal is not activated carbon
Bamboo charcoal is a very good health household product, bamboo charcoal fiber made of pillows and insoles are very good product. The focus of each product is different, bamboo charcoal for moisture has a certain adsorption capacity to regulate the role of space humidity. However, bamboo charcoal has sparse pore size and low iodine value, so it can't be used as a harmful gas purification product. Its pore size on the capture of harmful gases is very weak, and can not firmly adsorb the capture of formaldehyde molecules.