China Activated Carbon Air Filter Cartridge Manufacturer

Activated carbon cartridges remove volatile organic compounds, odors, and certain gaseous pollutants by adsorption onto a high‑surface‑area carbon matrix. The performance depends on carbon type, pore structure, cartridge geometry, and face velocity. Understanding these parameters helps engineers select a cartridge that meets specific indoor air quality or process gas treatment targets without over‑specifying pressure drop or replacement frequency.

Key Design Parameters

The cartridge body is typically constructed from extruded polypropylene or stainless steel mesh, chosen for chemical resistance and mechanical strength. Carbon loading ranges from 300 g to 800 g per cartridge, influencing both adsorption capacity and pressure drop. Face velocity is usually kept between 0.5 m/s and 1.5 m/s to balance contact time with system energy consumption.

• Carbon types: bituminous coal‑based, coconut shell, or impregnated (e.g., KOH, H₂SO₄) for specific pollutant targeting.
• Cartridge lengths: 100 mm, 150 mm, 200 mm, 250 mm; diameters: 45 mm, 60 mm, 75 mm.
• End caps: thermoplastic urethane with O‑ring seals or metal crimp for high‑temperature applications.

Typical Specifications

Applications and Rationale

In semiconductor fabs, activated carbon cartridges protect photolithography tools from molecular contaminants that can cause wafer defects. The low outgassing polypropylene housing prevents particle shedding, while the high iodine number carbon captures amines and sulfides at sub‑ppm levels.

For paint spray booths, the cartridges capture solvent vapors (e.g., toluene, xylene) before they reach exhaust filters, extending the life of downstream HEPA units and reducing fire risk. The cartridges are sized to handle peak solvent loads while maintaining a pressure drop below the fan’s static pressure curve.

In laboratory fume hoods, impregnated carbon targets specific acids or bases, providing a safety margin when working with volatile reagents. The cartridge’s modular length allows quick replacement without disturbing the hood sash alignment.

Quality Control Philosophy

Each batch of carbon is screened for iodine number, ash content, and moisture before blending. Cartridges undergo a dimensional check (±0.2 mm on length, ±0.1 mm on diameter) and a leak test using pressurized nitrogen to verify seal integrity. Final performance is validated by breakthrough testing with a challenge gas (e.g., n‑butane) at a defined concentration and flow rate.

Customization Options

• Alternative housing materials: PVC‑coated steel for corrosion‑prone environments, PTFE for high‑temperature processes.
• Custom end‑cap geometries: flanged, threaded, or quick‑connect fittings to match existing hardware.
• Surface treatments: antimicrobial coating or hydrophobic layer to prevent bio‑growth in humid streams.
• Packaging: bulk cartridges in recyclable cartons or individual sealed pouches for OEM kits.

Frequently Asked Questions

• Can dimensions be customized? Yes, length and diameter can be adjusted to fit specific housings; tooling changes are quoted per project.
• What information is required for a quotation? Required data include target pollutants, inlet concentration, flow rate, allowable pressure drop, housing material preference, and any regulatory standards (e.g., ISO 14644, UL 900).
• How is quality inspected? Incoming carbon is tested for iodine number and ash; each cartridge undergoes dimensional verification, seal leak test, and breakthrough validation before shipment.
• What packaging methods are available? Standard options are bulk cartons with internal dividers or sealed anti‑static pouches; custom labeling and pallet configurations are offered upon request.

To discuss your specific air‑gas treatment needs and receive a technical quotation, please contact our engineering team.