PP Activated Carbon Adsorption Tower

Product Model	PP-H Series (Customizable)
Category	Waste Gas Treatment Equipment
Reference Price	Price on request

Hot Customizable for Working Conditions 12 Technical Parameters

Product Overview

The PP Activated Carbon Adsorption Tower, also known as an Activated Carbon Adsorption Box or Activated Carbon Purification Tower, is a purification device for treating organic waste gases and odors. Dusty gases are driven by a fan to enter the tower under positive or negative pressure. Due to the unbalanced and unsaturated molecular or chemical forces on the solid surface of activated carbon, when the solid surface contacts the gas, it attracts gas molecules, concentrating and retaining them on the solid surface, thereby adsorbing pollutants. The filtered exhaust gas enters the equipment's dust removal system and is discharged into the sky for purification. When dust and particulate matter are abundant, the activated carbon adsorption unit can be used simultaneously with a water spray tower to achieve exhaust gas purification and compliance with emission standards.

Working Principle

The activated carbon adsorption equipment primarily utilizes the adsorption effect of porous solid adsorbent activated carbon to effectively remove organic pollutants and color/odor from industrial exhaust gases. Dusty gases are driven by a fan to enter the tower under positive or negative pressure. When the surface of the activated carbon adsorbent contacts the gas, it attracts gas molecules, separating pollutants from the exhaust gas mixture on the surface of the activated carbon, and discharging the purified gas into the sky. Activated carbon adsorption is a physical process; after saturation, the activated carbon must be replaced or regenerated to ensure continuous and stable purification effects.

Structural Composition

The equipment mainly consists of a housing, an inlet, an outlet, an activated carbon adsorption layer, drawer-type trays, a maintenance door, and a filter layer. The drawer-type structure facilitates easy replacement and maintenance of the activated carbon without disassembling the entire equipment. The activated carbon adsorption layer is designed with 2 to 4 layers based on the treatment airflow and pollutant concentration. For high concentrations and large airflow, additional layers are added to extend the adsorption cycle; for low concentrations and small airflow, the number of layers can be reduced to lower costs. Activated carbon can be selected as cylindrical, honeycomb, or granular, with cylindrical carbon offering general applicability, honeycomb carbon providing low resistance, and granular carbon offering a larger specific surface area. Selection is based on exhaust gas composition and system air pressure. The filter layer is used for pre-treating dust and particulate matter in the exhaust gas to protect the activated carbon adsorption layer. The equipment is welded using PP/PPs flame-retardant materials, offering corrosion resistance, acid/alkali resistance, and a robust structure. It can be designed as either vertical or horizontal based on site space.

Adsorption Method Comparison

The activated carbon adsorption tower mainly has two structural types: drawer-type and fixed-type. The drawer-type activated carbon adsorption box adopts a drawer-type tray design, making activated carbon loading and replacement convenient, suitable for medium-low airflow and frequent activated carbon replacement scenarios. The fixed-type activated carbon tower has a large amount of activated carbon loading, suitable for high airflow and continuous operation scenarios, requiring the opening of a maintenance door for activated carbon replacement. Based on exhaust gas composition and concentration, cylindrical, honeycomb, or granular activated carbon can be selected, with the adsorption layer designed as multi-layered to improve adsorption efficiency and extend replacement cycles.

Specification Model Table

Configuration Item	Available Range	Description
Main Material	PP/PPs Flame-Retardant	Corrosion-Resistant, Acid/Alkali-Resistant
Structural Form	Vertical/Horizontal	Selected Based on Site Space
Adsorption Method	Drawer-Type/Fixed-Type	Selected Based on Replacement Frequency
Adsorbent Type	Cylindrical/Honeycomb/Granular	Selected Based on Exhaust Gas Composition
Adsorption Layers	2-4 Layers	Designed Based on Concentration and Airflow
Processing Airflow	Designed Based on Conditions	Supports Non-Standard Customization
Flame-Retardant Rating	Standard PP/V0 Grade PPs	Selected Based on Safety Requirements

All configuration items can be customized based on customer site conditions, processing airflow, and exhaust gas composition. Specific solutions are designed and confirmed by technical personnel.

Product Features

Uses PP/PPs flame-retardant materials, acid/alkali-resistant, UV-resistant, flame-retardant, long service life
Utilizes porous activated carbon adsorption to effectively remove organic pollutants and odors
Drawer-type structure design, convenient activated carbon replacement, simple maintenance
Customizable adsorption layers, high purification efficiency, stable operation
Can be paired with a spray tower for pre-treatment to protect the activated carbon layer from clogging
Available in vertical or horizontal designs, supports non-standard dimensions and airflow customization

Main material	PP/PPs flame-retardant polypropylene
Adsorption method	Drawer Type / Fixed Type
Adsorbent type	Activated carbon
Processing object	VOC organic exhaust gas, odor, organic pollutants
Working Principle	Positive or negative pressure suction
Flame-retardant rating	Standard PP/V0 grade flame-retardant PPs
Activated carbon replacement method	Drawer type extraction/inspection door replacement
Pre-treatment method	Can be matched with spray tower for dust removal and cooling
Tower type	Vertical / Horizontal
Installation method	Suitable for both indoor and outdoor use
Sheet Material Characteristics	Corrosion-resistant, acid-base resistant, UV-resistant, flame-retardant
Customized Service	Supports non-standard dimensions and airflow customization

Application Industries

Organic gas and odor purification in chemical and pharmaceutical industries
VOC organic gas treatment in electronic and semiconductor industries
Organic gas and paint mist post-purification in coating and spray painting industries
Ink solvent gas treatment in printing and packaging industries
Flue gas and organic gas treatment in rubber and plastic industries
Oil smoke and odor gas purification in food processing industries
Deep treatment of fume hoods in laboratories and testing institutions

Typical Process Locations

The typical organic gas treatment process involves collecting gas through hoods or ducts, followed by pre-treatment for dedusting and cooling in PP spray towers or swirl towers. The gas then enters a PP activated carbon adsorption tower for deep adsorption and purification, removing VOC organic pollutants and odors. Finally, it is discharged through a PP corrosion-resistant fan via an exhaust stack, meeting emission standards. For scenarios with high dust content, pre-treatment equipment must be installed before the activated carbon tower to prevent particulate matter from blocking the activated carbon pores. Xicheng Environmental can provide complete equipment and solution design services, including activated carbon adsorption towers, spray towers, PP fans, and PP flame-retardant ducts. The design of the activated carbon adsorption tower requires determining the thickness of the adsorption layer and the amount of activated carbon loading based on gas concentration, treatment airflow, and emission standards. If the concentration is too high, additional pre-treatment or multi-stage adsorption processes should be implemented. The replacement cycle of activated carbon should be formulated based on actual operating data. It is recommended to install detection ports at the inlet and outlet of the equipment to regularly monitor purification efficiency, ensuring stable and compliant gas emission.

The PP Activated Carbon Adsorption Tower is an equipment that utilizes the adsorption effect of porous solid adsorbent activated carbon to purify waste gas. Dust-containing gas is driven by a fan and enters the tower under positive or negative pressure. Due to the unbalanced and unsaturated molecular or chemical forces on the solid surface of activated carbon, when the solid surface contacts the gas, it can attract gas molecules, concentrating and retaining them on the solid surface, thereby adsorbing pollutants. After filtration, the purified gas enters the dust discharge system for high-altitude compliance emission. Activated carbon adsorption is a physical process, and the adsorbent needs to be replaced or regenerated after saturation.

The activated carbon adsorption tower is primarily used to treat various organic waste gases and odors, such as benzene, toluene, xylene, and other aromatic compounds, aldehydes, ketones, esters, and other organic volatile organic compounds (VOCs), as well as odorous waste gases generated in industries like food processing and wastewater treatment. For acidic or alkaline waste gases and those with high dust content, it is recommended to install a spray tower for pretreatment before the activated carbon tower to remove acidic or alkaline components and particulate matter, preventing pore blockage of the activated carbon and extending its service life. For high-concentration organic waste gases, it is recommended to adopt a combination of processes such as rotary concentrator or catalytic combustion for treatment.

The drawer-type activated carbon adsorption box features a drawer-style tray design, allowing for convenient and quick loading and replacement of activated carbon without disassembling the entire unit. It is suitable for medium-low airflow applications requiring frequent activated carbon replacement. The fixed-type activated carbon tower has a large activated carbon loading capacity and a thicker adsorption layer, making it ideal for high airflow and continuous operation scenarios. Activated carbon replacement requires opening the maintenance door for operation. When selecting, factors such as treatment airflow, exhaust gas concentration, replacement cycle, and on-site maintenance conditions should be comprehensively considered. If unsure about the selection, field conditions can be provided for technical personnel to recommend the most appropriate structural form.

The replacement cycle of activated carbon is not fixed and depends on factors such as exhaust gas concentration, treatment air volume, operating time, and activated carbon loading. Generally, the outlet exhaust gas concentration is monitored to determine the need for replacement. When the outlet concentration approaches emission standards or the activated carbon reaches adsorption saturation, it should be replaced promptly. It is recommended to install inspection ports at the inlet and outlet of the equipment to regularly test the purification efficiency. Alternatively, a replacement schedule can be developed based on operational experience, such as every three to six months, with the specific frequency determined by actual conditions. Used activated carbon is classified as hazardous waste and should be properly disposed of by qualified third-party agencies.

In organic waste gas treatment systems, spray towers typically serve as front-end pretreatment equipment, first removing dust, particulate matter, and acidic/basic components from the waste gas while also cooling it to prevent these substances from blocking the pores of activated carbon. After pretreatment in the spray tower, the waste gas enters an activated carbon adsorption tower for deep purification, removing VOC organic pollutants. The typical process involves: exhaust gas collection by a hood, pretreatment in a spray tower, entry into an activated carbon adsorption tower, and finally, discharge through a stack via a fan to meet emission standards.

The selection primarily requires the following parameters: First, the nature of the exhaust gas, including pollutant composition, concentration, and whether it contains dust; second, the treatment air volume, measured in cubic meters per hour; third, the exhaust gas temperature and humidity; fourth, the required purification efficiency and the applicable emission standards; fifth, the on-site installation space, including height and footprint limitations; sixth, material preferences and flammability rating requirements. Providing these parameters allows for matching the cabinet size, adsorption layer count, and activated carbon loading, supporting custom non-standard designs. If the parameters are incomplete, an approximate air volume and exhaust gas type can be provided first, and technical personnel will assist in refining them.

The resistance of activated carbon adsorption towers primarily comes from the pressure loss in the activated carbon adsorption layer and the airflow passing through the housing, generally within the range of hundreds of Pascals, depending on the thickness of the adsorption layer, airflow velocity, and type of activated carbon. Honeycomb activated carbon has lower resistance, cylindrical activated carbon has moderate resistance, and granular activated carbon has relatively higher resistance. When selecting, the thickness of the adsorption layer and airflow velocity should be designed based on the pressure margin of the fan to ensure system air pressure matching. Excessive resistance will increase fan energy consumption, and sufficient air pressure margin should be reserved during selection.

The activated carbon adsorption tower is primarily designed for organic exhaust gases and odors, with limited effectiveness in treating acidic and alkaline exhaust gases. Acidic and alkaline exhaust gases are recommended to be treated by PP spray tower for washing and neutralization. If the exhaust gas contains both organic pollutants and acidic/alkaline components, a combined process of spray tower plus activated carbon adsorption tower can be adopted. First, the spray tower removes acidic/alkaline components, and then the activated carbon tower adsorbs organic pollutants. Using only the activated carbon tower to treat high-concentration acidic/alkaline exhaust gases may cause the activated carbon to fail and lead to equipment corrosion.

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