HojeeCarb - Activated Carbon Manufacturer
Honeycomb activated carbon blocks
Specialty Product

Honeycomb
Activated Carbon

Structured carbon blocks with ultra-low pressure drop for high-volume industrial VOC removal. The efficiency of activated carbon without the fan energy penalty.

Low Pressure Drop, High Efficiency

Honeycomb activated carbon solves the fundamental trade-off in air treatment: how to maximize pollutant contact without creating excessive backpressure. The extruded honeycomb structure creates hundreds of parallel channels that allow air to flow through with minimal resistance while maintaining a large active surface area.

At 1 m/s face velocity, a 100 mm deep honeycomb bed creates less than 300 Pa pressure drop — compared to 800–1500 Pa for an equivalent granular packed bed. This translates directly to lower fan power consumption, reduced noise, and compatibility with existing HVAC systems.

Key Advantages

< 300 Pa

Pressure Drop

At 1 m/s, 3–5× lower than granular

High

Contact Area

200 cells/in² = massive surface

Yes

Regenerable

Hot air 120°C desorption, 2–3 year life

Up to 500mm

Custom Sizes

Standard 100×100×100 mm

Applications

  • VOC removal from spray painting exhaust
  • Printing & coating industry off-gas
  • Semiconductor fab chemical scrubbing
  • Furniture factory exhaust treatment
  • Petrochemical benzene/toluene/xylene removal
  • Building ventilation air purification
  • Adsorption-desorption catalytic combustion (RCO pre-stage)
  • Odor control for food processing plants

Honeycomb vs Granular Carbon for Air Treatment

FactorHoneycombGranular Bed
Pressure Drop< 300 Pa800–1500 Pa
Fan Energy CostLowHigh
Capacity per VolumeModerateHigher
Dust GenerationNoneSome
RegenerationIn-situ hot airRemove & reactivate
Best ForHigh volume, low conc.High conc., batch
Honeycomb activated carbon structure close-up

Technical Specifications

FormHoneycomb block
Dimensions100×100×100 mm (standard)
Cell Density100, 150, 200 cells/in²
Wall Thickness0.5 – 1.0 mm
Iodine Number≥ 400 mg/g
CTC Adsorption≥ 35%
Compressive Strength≥ 0.8 MPa
Moisture≤ 5%
Bed Pressure Drop< 300 Pa (at 1 m/s)
Temperature Range≤ 80°C (standard)
Base MaterialCoal-based / Coconut shell blend

Full adsorption isotherm and breakthrough data in TDS

Get Quote

Related Products

Catalytic Activated Carbon →Coal Pellet AC →Impregnated AC →

Available Configurations

100 cells/in²

High capacity, moderate flow

Thicker walls, more carbon per volume. Best for higher concentration VOC streams.

150 cells/in²

Balanced performance

Most popular choice. Good balance of capacity, pressure drop, and structural strength.

200 cells/in²

Lowest pressure drop

Thinnest walls, maximum open area. Best for very high air volumes with low VOC levels.

Frequently Asked Questions

What is honeycomb activated carbon?
Honeycomb activated carbon is a structured block made by extruding activated carbon powder with binders into a honeycomb shape. The parallel channels provide very low pressure drop (typically <300 Pa at 1 m/s face velocity) while maintaining large contact surface area, making it ideal for high-volume industrial air treatment.
How does honeycomb carbon compare to granular carbon for air treatment?
Honeycomb carbon has 3–5× lower pressure drop than packed granular beds at the same flow rate. This means lower fan energy costs. However, granular beds typically have higher adsorption capacity per unit volume. Honeycomb is preferred when pressure drop is the limiting factor (large air volumes, existing ductwork constraints).
What is the difference between water-resistant and standard honeycomb carbon?
Standard honeycomb carbon is suitable for dry gas streams (<70% RH). Water-resistant (hydrophobic) honeycomb carbon uses special binders that maintain structural integrity in humid conditions up to 95% RH. Water-resistant grades are essential for Southeast Asian and tropical environments.
How often does honeycomb carbon need replacement?
Service life depends on VOC concentration and air volume. Typical replacement interval is 6–12 months for moderate loads. For adsorption-desorption (regenerative) systems, the honeycomb carbon can last 2–3 years with periodic hot air or steam regeneration.
Can you supply custom dimensions?
Yes. Standard is 100×100×100 mm, but we manufacture custom sizes up to 500×500×100 mm for specific equipment. Cell density (100/150/200 cells/in²) is also customizable. MOQ for custom sizes is 500 pieces. Lead time 15–20 days.

Need Custom Honeycomb Dimensions?

We manufacture to your equipment specifications. Tell us the size, cell density, and target pollutant.

Get Custom QuoteContact Engineer
Get Free Quote