China Galvanized Steel Frame Box Type Activated Carbon Filter | Suppliers & Factory Direct Quality
Application Area
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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.
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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.
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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.
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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:
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Type A
VOC And Ozone, Etc.
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Type B
Acidic Gases (SO₂, NO₂, H₂S, HCL, HF, Etc.)
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Type C
Alkaline Gases (NH₃, Amines, Etc.)
Activated carbon is the core of the filter, and its type and quality directly determine the filtration performance.
⭐ Key Features & Advantages
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High Efficiency & Broad-Spectrum
Effectively removes various VOCs, odors, acidic/alkaline gases, and some inorganic gases.
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Simple Structure
Easy to install, maintain, and replace.
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Moderate Air Resistance
A well-designed box balances adsorption efficiency with system pressure drop.
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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.
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Cost-Effective
A relatively economical option for treating medium-to-low concentration, high-volume exhaust gases.
Core Structure and Components
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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).
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Air Flow Distribution & Support Structure Front Flow Distribution Screen/Plate ensures air flows evenly through the carbon bed, preventing "channeling" and maximizing the use of all carbon. Support Screen/Plate is located at the bottom of the box or between carbon layers, preventing fine activated carbon particles from being carried out by the air stream.
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Access Door / Port Facilitates the replacement of saturated activated carbon media.
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Pre-Filter (Upstream) 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.
Activated Carbon Media Layer
Media Types:
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Granular Carbon
Most common, strong adsorption capacity, adjustable packing density.
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Honeycomb Carbon (Block Carbon)
Low-pressure drop, suitable for high air volume applications.
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Activated Carbon Fiber Felt / Cloth
Fast adsorption speed, often used in composite filter elements.
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Carbon Type Selection
Chosen based on target pollutants (e.g., coconut shell carbon, coal-based carbon, impregnated carbon). 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)
❓ What types of pollutants can the box-type activated carbon filter remove?
The box-type activated carbon filter is capable of removing a wide range of pollutants, including VOCs (volatile organic compounds), odors, acidic gases (such as SO₂, NO₂, H₂S, HCl, HF), alkaline gases (such as NH₃ and amines), ozone, and some inorganic gases. The specific performance depends on the type of activated carbon selected.
❓ How do I choose the right type of activated carbon media for my application?
We offer three types of carbon activated media: Type A for VOCs and ozone, Type B for acidic gases (SO₂, NO₂, H₂S, HCl, HF, etc.), and Type C for alkaline gases (NH₃, amines, etc.). Selecting the correct type depends on the specific pollutants present in your air stream. Our team can assist you in identifying the right media based on your application requirements.
❓ Can the box-type activated carbon filter be customized to fit my system?
Yes. The 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. We support customer-specified sizes to ensure seamless integration with existing ductwork and HVAC systems.
❓ How often does the activated carbon media need to be replaced?
The service life of activated carbon media depends on factors such as pollutant concentration, air volume, humidity, and the type of carbon used. Installing a pre-filter upstream to remove dust and particles can significantly extend the carbon's service life by preventing micropore clogging. Regular monitoring of air quality or pressure drop across the filter is recommended to determine replacement intervals.
❓ What materials are used for the box casing, and is it suitable for corrosive environments?
The box casing is typically available in carbon steel, stainless steel, or corrosion-resistant PP plastic. For environments involving acidic or alkaline gases, stainless steel or PP plastic casings are recommended to ensure long-term structural integrity and sealing performance.
❓ Is the box-type activated carbon filter suitable for high air volume applications?
Yes. The filter is designed to handle high air volume applications. For scenarios requiring minimal pressure drop at high air volumes, honeycomb carbon (block carbon) media is recommended due to its low-pressure drop characteristics. The well-designed air flow distribution structure also ensures even airflow through the carbon bed, maximizing adsorption efficiency across the entire filter area.