Working principle of activated carbon adsorption tank:
When the exhaust gas is powered by the fan and enters the adsorption tank under negative pressure, it will enter the activated carbon adsorption layer. Because there are unbalanced and unsaturated molecular gravity or chemical bond forces on the surface of the activated carbon adsorbent, when the surface of the activated carbon adsorbent contacts with the gas, it will attract the gas molecules and make them concentrate and remain on the surface of the activated carbon. This phenomenon is called adsorption. Using the adsorption capacity of the surface of activated carbon adsorbent, the waste gas is contacted with the porous activated carbon adsorbent on the large surface, and the pollutants in the waste gas are adsorbed on the surface of activated carbon to separate it from the gas mixture, and the purified gas is discharged at a high altitude.
Paint exhaust gas composition:
Components of waste gas from paint spraying and drying: benzene, dioxane, styrene, non methane total hydrocarbon, mainly the treatment of "triphenyls" and volatile organic waste gas (VOCs).
Benzene: a hydrocarbon, i.e. the simplest aromatic hydrocarbon, is a sweet, flammable, carcinogenic, colorless, transparent liquid with a strong aromatic odor at room temperature. It is difficult to dissolve in water, soluble in organic solvent, and can also be used as organic solvent. Benzene has a ring system called benzene ring. The structure of benzene ring after removing one hydrogen atom is called pH, so the chemical formula of benzene can also be written PHH. Benzene is a basic raw material of petrochemical industry. Its output and production technology level is one of the symbols of the development level of petrochemical industry in a country.
Main components of activated carbon:
Chemical differentiation of main components of activated carbon: carbon and a small amount of oxygen, sulfur and nitrogen
Process characteristics of activated carbon adsorption device:
1. It is divided into manual type and automatic type, with compact and integrated structure, easy to install, operate and maintain;
2. High filtering speed, large processing capacity, stable operation effect and less equipment occupation;
3. The filter material has large sewage interception capacity, high porosity, friction resistance and moderate specific gravity
The selection of waste gas treatment mainly considers: air volume, gas temperature, installation height, temperature of the use environment, and the demisting device in front of the air inlet must be handled well.
Activated carbon adsorption technology has been used in the refining and decolorization of chemical industry and food industry for many years. 70 for industrial wastewater treatment. Activated carbon adsorption has gradually become one of the main methods of the second or third treatment of industrial wastewater. The activated carbon adsorption tower of organic waste gas is widely used in places where organic waste gas and peculiar smell are produced by spraying, painting and drying of furniture and wood industry, chemical coating, metal surface treatment, etc. the high-quality activated carbon adsorption is used as the adsorption medium, and the organic waste gas is filtered and adsorbed through multi-layer adsorption layer, so as to achieve the purpose of purifying waste gas.
Application scope of activated carbon adsorption tower:
Activated carbon adsorption tower is mainly used for various organic waste gas purification, especially for the treatment of paint waste gas, ink waste gas, solder waste gas and plastic waste gas.
Main components of activated carbon:
Chemical differentiation of main components of activated carbon: carbon and a small amount of oxygen, sulfur and nitrogen
Process characteristics of activated carbon adsorption device:
1. Compact and integrated structure, easy to install, operate and maintain;
2. High filtering speed, large processing capacity, stable operation effect and less equipment occupation;
3. The filter material has large sewage interception capacity, high porosity, friction resistance and moderate specific gravity
The selection of waste gas treatment mainly considers: air volume, gas temperature, installation height, temperature of the use environment, and the demisting device in front of the air inlet must be well handled