The function and usage precautions of coconut shell activated carbon
Coconut shell activated carbon is a type of carbon with a developed pore structure, a large specific surface area, and adsorption capacity. The total surface area of each gram of activated carbon can reach over 1500 square meters. There are many types of activated carbon, which can be divided into plant-based carbon, coal based carbon, petroleum based carbon, bone charcoal, blood charcoal, and so on according to different raw materials; According to the manufacturing method, it can be divided into gas activated carbon and physical activated carbon; Chemical activation method charcoal, also known as chemical activation method charcoal; Chemical physical activated carbon; According to their appearance, activated carbon can be divided into powdered activated carbon, amorphous granular activated carbon, shaped granular activated carbon, spherical carbon, fibrous carbon, woven carbon, etc.Coconut shell activated carbon can be divided into gas-phase adsorption carbon, liquid-phase adsorption carbon, sugar use carbon, industrial carbon, catalyst, and catalyst carrier carbon according to their applications. Activated carbon has adsorption and catalytic properties, is insoluble in water and other solvents, and has physical and chemical stability. Except for high temperature contact with oxygen and reaction with strong oxidants such as ozone, chlorine, and dichromate, it is extremely stable under actual usage conditions. Due to its excellent properties as an adsorbent, activated carbon has a wide range of applications. What are the functions of coconut shell activated carbon1. Coconut shell particle activated carbon is commonly used in gas-phase adsorption, usually allowing the airflow to pass through the activated carbon layer for adsorption. According to the different states of the activated carbon layer in the adsorption device, there are several types of adsorption layers: fixed layer, moving layer, and flowing layer. However, in small adsorbers such as refrigerators and deodorizers in cars, adsorption relies on gas convection and diffusion. In addition to granular activated carbon, activated carbon fibers and activated carbon molded products are also increasingly being used in gas-phase adsorption.2. The air in instrument rooms, air conditioning rooms, basements, and underwater facilities often contains body odor, smoking odor, cooking odor, oil, organic and inorganic sulfides, corrosive components, etc. due to external pollution or the influence of human activities in enclosed environments, causing corrosion of precision instruments or affecting human health. Activated carbon can be used for purification to remove impurities.3. Coconut shell activated carbon can be used in chemical plants, leather factories, paint factories, and engineering projects that use various organic solvents. It contains various organic solvents, inorganic and organic sulfides, hydrocarbons, chlorine gas, oil, mercury, and other harmful components to the environment. Activated carbon can be used for adsorption before discharge. The gases emitted from atomic energy facilities contain radioactive substances such as krypton, xenon, iodine, etc., which must be adsorbed clean with activated carbon before being discharged. The flue gas generated by the combustion of coal and heavy oil contains sulfur dioxide and nitrogen oxides, which are harmful components that pollute the atmosphere and form acid rain. They can also be adsorbed and removed by activated carbon.4. There are still many uses of coconut shell activated carbon for refining gases, such as gas masks, cigarette filters, refrigerator deodorizers, car exhaust treatment devices, etc., all of which utilize the adsorption properties of activated carbon to remove toxic, harmful, or odorous components from gases.5. Thiol removal activated carbon: used as a carrier for gasoline desulfurization (deodorization) catalysts in catalytic units of refineries.6. Vinylon catalyst activated carbon: used in the chemical industry as a catalyst carrier, such as as as a catalyst carrier for vinyl acetate.7. Monosodium glutamate refined activated carbon: used for decolorization and refinement of mother liquor in the production process of monosodium glutamate, and can also be used for decolorization and refinement of fine chemical products.8. Special activated carbon for cigarette filters: used in cigarette filters in the cigarette industry to remove toxic and harmful substances such as tar and nicotine from cigarettes.9. Citric acid specific activated carbon: used for decolorization, refining, and deodorization of various acids such as citric acid, amino acids, and cysteine.10. Special activated carbon for direct drinking water treatment: Activated carbon is used for deep water purification of household direct drinking water, water treatment in waterworks, and bottled water production.Precautions for using coconut shell activated carbon1. Coconut shell activated carbon should not be mixed with hard substances during transportation, and should not be stepped on to prevent the carbon particles from breaking and affecting the quality.2. Storage should be carried out on porous adsorbents, so during transportation, storage, and use, it is necessary to absolutely prevent water immersion, as a large amount of water will fill the active voids after immersion, rendering them ineffective.3. Coconut shell activated carbon should be used to prevent tar substances from entering the activated carbon bed during use, in order to avoid blocking the pores of the activated carbon and losing its adsorption function. Effectively remove coke equipment and purify gas.4. When storing or transporting fire-resistant activated carbon, direct contact with a fire source should be avoided to prevent ignition. During the regeneration of activated carbon, oxygen should be avoided and the regeneration should be thorough. After regeneration, it must be cooled with steam to below 80 ℃, otherwise the temperature will be high and the activated carbon will spontaneously ignite when exposed to oxygen.
2020-08-01