What Role Does Activated Carbon Play in The Filtration of Industrial Waste Gas?

Activated carbon, with its well-developed pore structure and huge specific surface area, utilizes the principles of physical adsorption and chemical adsorption to adsorb various pollutants such as volatile organic compounds (VOCs), malodorous gases, and other contaminants in industrial exhaust gases. It plays a crucial role in the purification of industrial exhaust gases. It can effectively remove harmful gases like formaldehyde and benzene, has high purification efficiency, and is suitable for handling large volume and low concentration exhaust gases. It is often used in combination with other treatment technologies to enhance efficiency.

The Role of Activated Carbon in Industrial Waste Gas Filtration

1. Adsorption of pollutants: The high specific surface area of activated carbon enables it to adsorb pollutants in waste gas, including organic substances, malodorous gases, etc., such as benzene, alcohols, ketones, esters, etc., which are volatile organic compounds.

2. Physical adsorption and chemical adsorption: The unsaturated molecular gravitational force or chemical bond force on the solid surface of activated carbon attracts gas molecules, causing them to concentrate on the surface and be adsorbed.

3. High purification efficiency: Activated carbon has a high adsorption efficiency and capacity, and can effectively remove various mixed waste gas.

4. Wide application range: The activated carbon adsorption system is suitable for treating large volume and low concentration exhaust gases, such as those from electronic component production and battery manufacturing.

5.Combination with other technologies: Activated carbon adsorption is often used in combination with other technologies such as catalytic combustion, thermal desorption, biological filtration, photocatalytic oxidation, wet scrubbing, and electrostatic dust removal, to achieve better purification effects.

6.Elimination of odors and disinfection: Activated carbon not only removes harmful gases (such as formaldehyde and benzene), but also ha.s the function of disinfection and deodorization.

Principles and process of activated carbon adsorption:

1. Exhaust gas entry: Organic exhaust gas is driven by the fan and enters the activated carbon adsorption tower or box through the duct.

2. Adsorption process: When the exhaust gas flows through the activated carbon layer, the pollutant molecules in the exhaust gas are attracted by the unsaturated molecules on the surface of the activated carbon or chemical bonds, and are adsorbed and aggregated on the surface and pores of the activated carbon.

3. Purification and discharge: The purified gas after activated carbon adsorption passes through the subsequent dust removal system and is finally discharged at a high altitude and meets the standards.

4. Saturation and regeneration of activated carbon: As the amount of pollutants adsorbed by the activated carbon gradually increases, the activated carbon will gradually reach saturation and lose its adsorption capacity. At this time, it is necessary to regenerate the activated carbon, for example, by heating desorption or using high-temperature water vapor cleaning methods to restore its adsorption capacity.