China Suppliers Factory Galvanized Steel Frame Box Type Activated Carbon Filter with EN 779 Standard
Application Area
Industrial Environmental Protection
- VOC exhaust treatment in spraying, printing, and electronics manufacturing industries (often as a pre-treatment or core treatment unit).
- Process exhaust purification and deodorization in chemical and pharmaceutical plants.
- Fume hood exhaust treatment in laboratories.
Commercial & Civil Use
- Oil fume odor purification in large commercial kitchens (requires integration with grease removal devices).
- Ventilation and deodorization in underground parking garages and sewage treatment stations.
- Odor control in food processing plants.
HVAC Systems
- Fresh air purification in high-end office buildings, hospitals, museums, and airports to improve Indoor Air Quality (IAQ), removing outdoor ozone, vehicle exhaust, or indoor decoration pollution.
Special Locations
- High-intensity odor control in places like airport smoking rooms, animal housing facilities, and waste transfer stations.
Filter Media Materials
We have 3 types of Carbon Activated Media to meet your needs:
Type A
VOC And Ozone, Etc.
Type B
Acidic Gases
(SO₂, NO₂, H₂S, HCL, HF, Etc.)
(SO₂, NO₂, H₂S, HCL, HF, Etc.)
Type C
Alkaline Gases
(NH₃, Amines, Etc.)
(NH₃, Amines, Etc.)
Activated carbon is the core of the filter, and its type and quality directly determine the filtration performance.
Key Features & Advantages
High Efficiency & Broad-Spectrum
Effectively removes various VOCs, odors, acidic/alkaline gases, and some inorganic gases.
Simple Structure
Easy to install, maintain, and replace.
Moderate Air Resistance
A well-designed box balances adsorption efficiency with system pressure drop.
Flexible Customization
Box dimensions, carbon bed thickness, activated carbon type, and fill volume can be customized based on air volume, pollutant concentration, and treatment requirements.
Cost-Effective
A relatively economical option for treating medium-to-low concentration, high-volume exhaust gases.
Core Structure and Components
Box (Casing)
Typically made of carbon steel, stainless steel, or corrosion-resistant PP plastic to ensure structural strength and sealing. Usually a rectangular prism shape with flanges for easy connection to ductwork (inlet and outlet).
Air Flow Distribution & Support Structure
- Front Flow Distribution Screen/Plate: Ensures air flows evenly through the carbon bed, preventing "channeling" (air taking the path of least resistance) and maximizing the use of all carbon.
- Support Screen/Plate: Located at the bottom of the box or between carbon layers, it prevents fine activated carbon particles from being carried out by the air stream and supports the weight of the carbon bed.
Access Door / Port
Facilitates the replacement of saturated activated carbon media.
Sometimes, a primary or medium-efficiency filter is installed upstream of the box to first remove dust and particles from the air stream. This prevents clogging of the activated carbon micro pores and significantly extends its service life.
Galvanized Steel Frame Box Type Activated Carbon Filter
Box-Type Activated Carbon Filter
Activated Carbon Media Layer
Media Types
Granular Carbon
Most common, strong adsorption capacity, adjustable packing density.
Honeycomb Carbon (Block Carbon)
Low-pressure drop, suitable for high air volume applications.
Activated Carbon Fiber Felt / Cloth
Fast adsorption speed, often used in composite filter elements.
Carbon Type Selection: Chosen based on target pollutants (e.g., coconut shell carbon, coal-based carbon, impregnated carbon). For example, acid-impregnated carbon is specifically used to treat alkaline gases like ammonia and amines.
Technical Parameters
Remarks: (1) Initial resistance tolerance of ±10% (2) Support customer size
Frequently Asked Questions (FAQ)
Q1
What types of pollutants can a box-type activated carbon filter remove?
Box-type activated carbon filters are effective at removing a wide range of pollutants including VOCs (volatile organic compounds), odors, acidic gases (such as SO₂, NO₂, H₂S, HCL, HF), and alkaline gases (such as NH₃ and amines). The specific carbon type (Type A, B, or C) should be selected based on the target pollutant.
Q2
How do I choose the right activated carbon media type for my application?
Selection depends on the target pollutants in your application. Type A carbon is designed for VOCs and ozone; Type B is suited for acidic gases; and Type C targets alkaline gases such as ammonia and amines. For mixed pollutant environments, a combination or custom-impregnated carbon may be recommended.
Q3
Can the box-type activated carbon filter be customized to fit my system?
Yes. Box dimensions, carbon bed thickness, activated carbon type, and fill volume can all be customized based on your specific air volume, pollutant concentration, and treatment requirements. Custom sizing is fully supported to ensure seamless integration with your existing ductwork.
Q4
How often does the activated carbon need to be replaced, and how is it done?
Replacement frequency depends on pollutant concentration, air volume, and operating conditions. When the carbon becomes saturated and adsorption efficiency drops, replacement is needed. The filter is designed with an access door or port for easy removal and replacement of the saturated carbon media without dismantling the entire unit.
Q5
Should a pre-filter be used before the activated carbon filter?
Yes, it is strongly recommended. Installing a primary or medium-efficiency filter upstream of the activated carbon box helps remove dust and particulate matter before the air reaches the carbon bed. This prevents clogging of the activated carbon's micro pores and significantly extends the service life of the carbon media.
Q6
What industries and environments are box-type activated carbon filters most suitable for?
These filters are suitable for a broad range of applications including industrial environments (spraying, printing, electronics, chemical and pharmaceutical plants, laboratories), commercial settings (large kitchens, parking garages, food processing plants), HVAC systems in offices, hospitals, museums and airports, as well as special locations such as smoking rooms, animal housing facilities, and waste transfer stations.