Editorial Technical Reference

Activated Carbon Filter

This page explains how Activated Carbon Filter is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A filtration component that uses activated carbon to adsorb and remove gaseous pollutants, odors, and volatile organic compounds from exhaust air streams.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Activated Carbon Filter

Definition
An activated carbon filter is a critical component within exhaust systems designed to purify air by removing contaminants through adsorption. It consists of a housing containing activated carbon media with a high surface area that traps and retains gaseous pollutants, odors, volatile organic compounds (VOCs), and other airborne chemicals before the air is discharged or recirculated. In industrial exhaust systems, it serves as a final purification stage to ensure compliance with environmental regulations and maintain air quality standards. The filter is typically installed downstream of particulate pre-filters and is selected based on the system's exhaust volume, contaminant load, and required efficiency. Key parameters include rated airflow (500–5000 m³/h), filtration efficiency (95–99.9% for particles ≥0.3 µm), adsorption capacity (15–60 g CCl4/100g), operating temperature (-20–60°C), operating pressure (1.0–1.6 MPa), pressure drop (200–800 Pa), humidity range (0–95% RH), filter media grade (G4–F9), carbon type (coal–coconut), iodine number (800–1200 mg/g), housing material (304–316 SS), and weight (50–500 kg). These values are reference ranges and must be verified for the specific model and application. The filter housing is typically made of stainless steel or galvanized steel, with support mesh or frame. Activated carbon media can be derived from coconut shell, coal, or wood, each offering different adsorption characteristics. Proper selection requires consideration of the target contaminants, operating conditions, and maintenance schedule. Regular monitoring of pressure drop and adsorption capacity is essential to determine when media replacement is needed. The filter must be operated within its specified temperature and humidity limits to maintain performance. Always confirm model-specific values and standards with the legal manufacturer or supplier.
Working Principle
Activated carbon filters operate through physical adsorption, where gaseous pollutant molecules are attracted to and held on the vast surface area of the porous activated carbon media due to intermolecular forces (van der Waals forces). The activated carbon's extensive network of microscopic pores provides a large surface area for capturing contaminants as the exhaust air passes through the filter bed. The process is reversible, and the media can become saturated over time, requiring replacement or regeneration. The efficiency of adsorption depends on the concentration and type of contaminants, temperature, humidity, and contact time.
Common Materials
Activated carbon (typically from coconut shell, coal, or wood), Filter housing (stainless steel or galvanized steel), Support mesh or frame
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Airflow500–5000 m³/hSelect based on system exhaust volumeISO 5801
Filtration Efficiency95–99.9 %For particles ≥0.3 µm; higher for finer mediaISO 16890
Adsorption Capacity15–60 g CCl4/100gHigher value indicates more adsorbent capacityASTM D3467
Operating Temperature-20–60 °CAbove 60°C may reduce adsorption efficiency
Pressure Drop200–800 PaHigher airflow increases pressure dropISO 3966
Humidity Range0–95 % RHNon-condensing; high humidity reduces adsorption
Filter Media GradeG4–F9Pre-filter grade for particulate removalISO 16890
Carbon Typecoal–coconutCoconut-based for higher adsorption of organics
Iodine Number800–1200 mg/gIndicates adsorption capacity for small moleculesASTM D4607
Housing Material304–316 SS316 for corrosive environmentsASTM A240
Weight50–500 kgDepends on size and carbon fill

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Filter Housing
    Provides structural support and contains the activated carbon media, with inlet and outlet connections for air flow
    Material: Stainless steel or galvanized steel
  • Activated Carbon Media Part
    Porous carbon material that adsorbs and retains gaseous pollutants through physical adsorption
    Material: Activated carbon (coconut shell, coal, or wood-based)
  • Support Mesh/Grid Part
    Holds the activated carbon media in place while allowing air to pass through uniformly
    Material: Stainless steel wire mesh or perforated plate
  • Pre-filter (optional) Optional Part
    Removes particulate matter before air reaches the activated carbon to prevent clogging
    Material: Polyester or synthetic fiber
  • Sealing Gasket Part
    Ensures airtight connections between filter sections and to the exhaust ductwork
    Material: Neoprene or silicone rubber

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 10 bar (150 psi) for standard housings, higher for reinforced designs
flow rate: 0.1 to 50 m³/min per filter module, scalable with multiple units
temperature: -20°C to +60°C
slurry concentration: Not applicable - dry gas phase operation only
Media Compatibility
✓ Organic vapor streams (VOCs) ✓ Odor control in HVAC systems ✓ Chemical process off-gases
Unsuitable: High moisture environments (>80% RH) without pre-drying
Sizing Data Required
  • Target contaminant concentration (ppm)
  • Required removal efficiency (%)
  • System airflow rate (m³/h)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Carbon bed channeling
Cause: Uneven flow distribution due to improper backwashing, particle settling, or bed disturbance, leading to preferential flow paths and reduced adsorption efficiency.
Carbon fines breakthrough
Cause: Mechanical degradation of carbon granules from excessive backwash pressure, thermal shock, or chemical attack, causing fine particles to carry over into downstream systems.
Maintenance Indicators
  • Sudden increase in differential pressure across the filter (indicating clogging or channeling)
  • Visible carbon fines in downstream sample points or effluent discoloration
Engineering Tips
  • Implement optimized backwash procedures with controlled flow rates and duration to prevent bed disturbance while removing trapped solids
  • Install pre-filtration (e.g., multimedia filters) upstream to remove suspended solids and extend carbon bed life by reducing fouling

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ASTM D2862-21 - Standard Test Method for Particle Size Distribution of Granular Activated Carbon EN 12915-1:2009 - Products used for treatment of water intended for human consumption - Granular activated carbon

Quoted from the published standard.

Manufacturing Precision
  • Particle Size Distribution: +/-5% of specified range
  • Iodine Number: +/-50 mg/g from declared value
Quality Inspection
  • Ash Content Test (ASTM D2866)
  • Adsorption Capacity Test (ASTM D4607)

Manufacturers of Activated Carbon Filter

5 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

CN Food Machines
Wenzhou, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Guangzhou Chunke Environmental
Guangzhou, Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Guangzhou Clean-Link Filtration Technology
Taiwan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
HIFINE
Jiangsu, CN
Also makes: HEPA Filter
Listed on the company's own website · profile compiled by CNFX from public sources
Wenzhou Kosun Fluid Equipment Co.,Ltd
Wenzhou, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
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Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
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Frequently Asked Questions

What does an activated carbon filter remove?

It removes gaseous pollutants, odors, and volatile organic compounds (VOCs) from exhaust air streams through adsorption. It does not effectively remove particulate matter, which is typically handled by pre-filters.

How often should the activated carbon media be replaced?

Replacement frequency depends on the contaminant load, airflow, and operating conditions. Monitoring pressure drop and adsorption capacity (e.g., iodine number) helps determine when media is saturated. Consult the manufacturer for specific guidance.

Can the filter be used in high-humidity environments?

The specified humidity range is 0–95% RH (non-condensing). High humidity can reduce adsorption efficiency, so ensure the filter is not exposed to condensing conditions.

What standards apply to this filter?

Relevant standards include ISO 5801 for airflow, ISO 16890 for filtration efficiency, ASTM D3467 for adsorption capacity, ISO 3966 for pressure drop, and ASTM D4607 for iodine number. Always verify compliance with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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