Activated carbon adsorption box

▍ Working principle

Its working principle is based on the powerful adsorption force generated by the huge specific surface area and highly developed microporous structure of honeycomb activated carbon, which physically captures and concentrates organic pollutants in waste gas.

1. Waste Gas Introduction: The organic waste gas to be treated enters the adsorption chamber evenly through the inlet under the action of an induced draft fan.

2. Flow Equalization Process: The waste gas first passes through the airflow distribution plate inside the chamber, allowing it to pass evenly through the entire activated carbon layer, avoiding airflow short-circuiting or the "tunneling effect," and ensuring that all activated carbon is fully utilized.

3. Adsorption Purification: When the waste gas passes through the regular channels of the 10×10×10mm block honeycomb activated carbon, the organic pollutant (VOCs) molecules are firmly adsorbed onto the abundant inner surface pores of the activated carbon under the action of van der Waals forces.

4. Clean Gas Emission: The clean gas, after adsorption and purification by the honeycomb activated carbon layer, is discharged into the atmosphere through the outlet or enters the next stage of treatment system.

5. Adsorption Saturation and Replacement: With the accumulation of operating time, the adsorption capacity of the activated carbon will gradually approach saturation. When the outlet gas concentration reaches the limit, the equipment needs to be stopped for replacement. At this time, simply pull out the entire saturated carbon module like pulling out a drawer, and replace it with a regenerated or brand-new carbon module to restore processing capacity.

▍ Structural features

1. High-Quality PP Material Housing:

● Corrosion Resistance: PP material exhibits excellent corrosion resistance to acids, alkalis, and organic solvents, adapting to complex chemical waste gas environments and eliminating the risk of corrosion associated with metal housings.

● Strong Sealing: The housing is welded from PP sheets, ensuring overall airtightness and preventing waste gas leakage.

● Lightweight and Durable: The equipment is lightweight yet strong, facilitating transportation and installation, and boasts a long service life.

2. Core Packing Material: 10×10×10mm Block Honeycomb Activated Carbon

● Low Air Resistance, High Throughput: The unique honeycomb structure and regularly arranged channels result in extremely low resistance (typically <500Pa) when waste gas passes through, making it ideal for treating large volumes of waste gas and significantly reducing fan energy consumption.

● Large Specific Surface Area: Despite its block structure, it is filled with micropores, achieving a specific surface area of over 700-1000 m²/g, resulting in high adsorption capacity and efficiency.

● **Resistant to Powdering:** Compared to granular activated carbon, honeycomb activated carbon has higher mechanical strength and is less prone to powdering under airflow, preventing carbon powder blockage.

● **Neatly Layout:** The regular shape ensures more uniform airflow distribution within the carbon layer, eliminating dead corners and resulting in a significantly higher utilization rate than granular activated carbon.

3. **Unique Drawer-Type Structure:**

● **Easy Replacement:** This is the biggest highlight of the equipment. Activated carbon is pre-filled in individual PP material drawer boxes. Replacement is simple: just open the inspection door on the side of the unit, unlock, and pull out the entire drawer. The entire process requires no entry into the tower and no heavy, dirty handling, making operation simple and labor-intensive.

● **Modular Design:** The unit is divided into multiple independent carbon module drawers, allowing for phased replacement of partially saturated carbon modules according to actual needs, saving operating costs.

● **Safe and Clean:** The fully enclosed replacement system avoids direct contact between personnel and activated carbon dust, improving the working environment and preventing secondary pollution during the replacement process.

▍ Core advantages

● Extremely Convenient Replacement and Maintenance: The drawer-style design completely solves the industry pain points of time-consuming, labor-intensive, and messy replacement of traditional granular activated carbon, significantly reducing downtime.

● Extremely Low System Resistance: The regular channels of the honeycomb activated carbon result in significantly lower overall equipment resistance than adsorption tanks filled with granular activated carbon, leading to significant energy savings.

● High Purification Efficiency: The large specific surface area of honeycomb activated carbon and its uniform airflow distribution result in high adsorption and purification efficiency for VOCs and odors.

● Safe and Reliable: The PP material is corrosion-resistant and anti-static, eliminating the risk of equipment corrosion, leakage, and potential combustion and explosion (compared to metal equipment).

● Long Service Life: The high-quality PP material housing has good weather resistance, and the honeycomb activated carbon has high mechanical strength and is not prone to pulverization, resulting in a long overall equipment lifespan.

● Good Economic Efficiency: Although the unit price of honeycomb activated carbon is relatively high, its low air resistance leading to energy savings, convenient replacement saving labor costs, and higher adsorption efficiency make its total life cycle cost more advantageous.

▍ Scope of application

This equipment is widely used in applications requiring the treatment of large volumes of low-concentration organic waste gas and odorous gases, primarily including:

● Electronics Industry: Organic waste gas generated during cleaning, photolithography, and etching processes in semiconductor, integrated circuit, and liquid crystal display (LCD) manufacturing.

● Chemical and Pharmaceutical Industries: Organic solvent waste gas emitted during the production of pesticides, dyes, synthetic materials, and pharmaceuticals.

● Spray Painting and Printing: Benzene, toluene, xylene (BTX), and non-methane hydrocarbons (NMHC) generated in industries such as automotive spray painting, furniture spray painting, and printing and packaging.

● Food Processing: Odorous and organic waste gas generated in edible oil plants, seafood processing plants, and spice factories.

● Wastewater Treatment Plants: Used to remove odorous gases (such as H₂S, mercaptans, and ammonia) generated in wastewater pretreatment ponds and sludge treatment workshops.

● Laboratory Ventilation: Purification of exhaust gases from laboratory fume hoods in universities, research institutions, and corporate R&D centers.

▍ Notice:For waste gases with high concentration, high temperature, and high humidity, pretreatment equipment such as pre-spray towers, condensers, and filters are required to ensure the adsorption efficiency and service life of honeycomb activated carbon.