1、 Classification of Activated Carbon
1.1 according to the material, activated carbon can be divided into five categories: coal, wood, fruit shell, petroleum coke and Resin activated carbon. These materials can be the most suitable raw materials for activated carbon production according to different production needs.
1.2 activated carbon can be divided into honeycomb activated carbon, columnar activated carbon, powdered activated carbon, crushed granular carbon, spherical carbon, briquetted activated carbon, columnar crushed carbon, etc.
1.3 according to the application scope and direction, activated carbon can be divided into gas phase adsorption activated carbon, liquid phase adsorption activated carbon and catalytic performance activated carbon. At the same time, according to the specific use conditions, it can be further divided into dozens of sub areas: oil and gas recovery activated carbon, desulfurization and denitrification activated carbon, waste gas treatment activated carbon, Water Treatment activated carbon, Sewage Treatment activated carbon, etc.
1.4 according to the manufacturing method, activated carbon can be divided into physical method, chemical method and physical-chemical method.
2、 Application of activated carbon
At present, the main activated carbon on the market is divided into gas phase adsorption activated carbon and liquid phase adsorption activated carbon. The representative of gas phase adsorption activated carbon are honeycomb activated carbon, columnar activated carbon and powdered activated carbon; The representative of liquid adsorption activated carbon: powder activated carbon, columnar activated carbon, Coconut Shell Activated Carbon, broken activated carbon and so on are widely used.
2.1 in the process of gas phase adsorption, the amount of PAC used in waste incineration is relatively large. In the process of treating other waste gas and VOCs organic waste gas, honeycomb activated carbon and columnar activated carbon are applied respectively according to different waste gas treatment equipment. For example, the existing equipment for (RCO) catalytic combustion equipment generally uses honeycomb activated carbon. At the same time, according to the different moisture content of waste gas, water-resistant honeycomb activated carbon and water-resistant honeycomb activated carbon are generally used. The existing equipment is activated carbon adsorption tank, which generally uses columnar Granular Activated Carbon. At the same time, the particle size of activated carbon can be adjusted according to the needs of exhaust gas concentration and wind speed. If the existing equipment is activated carbon adsorption box, honeycomb activated carbon or columnar activated carbon can be used according to specific factors such as air volume and concentration.
2.2 in the process of liquid phase adsorption, powdered activated carbon filter, crushed granular activated carbon filter and biological activated carbon combined with ozone activated carbon are widely used in the treatment of tap water. It can effectively remove the dissolved matter in the water, reduce the UV absorption value, and reduce the total organic carbon (TOC), chemical oxygen demand (COD) and chlorine content in the water. High quality coconut shell activated carbon is the best choice for deep purification of water. Different grades of powdered activated carbon and columnar activated carbon are used in wastewater treatment. Activated carbon combined with other different processes has good treatment effect for mercury containing wastewater, vanadium containing wastewater, phosphorus containing wastewater, fluorine containing wastewater, cyanide containing wastewater, hydrocarbon containing wastewater, polychlorinated biphenyl containing wastewater, halohydrocarbon containing wastewater, organochlorine pesticide containing wastewater, aldehyde containing wastewater, ketone containing wastewater, organic ACID containing wastewater, lipid containing wastewater, phenol containing wastewater and nitro containing wastewater.
Attachment: the subdivision use and application direction of activated carbon
1. oil and gas / solvent recovery
This product is widely used in rubber, adhesive, printing, paper processing, synthetic fiber synthetic resin, metal oil removal, petrochemical and other fields. It is used to recover organic solvents and steam such as benzene, xylene, ether and ester.
2. VOCs governance VOCs disposal
This product is widely used in various industrial fields, and is used to adsorb and remove complex organic volatiles (VOCs).
3. potable water purification
This product is used for deep purification of direct drinking water, effectively removing residual chlorine and other residues, so as to ensure the safety and health of drinking water.
4. waste water disposal
This product is widely used in the deep purification of municipal water and various industrial wastewater. It has been widely used in food, chemical industry, electroplating, medicine and other fields.
5. special carbon for desulfurization and denitrification
This product is widely used in the desulfurization and denitrification treatment of power plants and smelters, and it is widely used in the field of oil, natural gas, coal and waste incineration.
6. fine chemicals
This product is suitable for decolorization, purification and refining of chemical reagents, pharmaceutical raw materials, pharmaceutical intermediates, biochemical, plant extraction, food brewing and other products.
7. food grade carbon
This product is suitable for decolorization and refining of sugar such as sucrose, maltose and glucose, and also for the in-depth purification, decolorization, purification and refining of monosodium glutamate, saccharin, Citric Acid, spices, food additives and other industries.
8. special carbon for waste / hazardous waste incineration
This product is mainly used in waste incineration plant, desulfurization spray system, VOCs gas spray adsorption system. It has irreplaceable effect on the treatment of dioxin and other polluting gases
