HojeeCarb - Activated Carbon Manufacturer
Coal columnar activated carbon pellets
PSA / Solvent Recovery Grade

Coal Columnar
Activated Carbon

Extruded cylindrical carbon for PSA nitrogen generation, solvent recovery, and industrial gas purification. Uniform shape, predictable pressure drop, high cycle life.

Engineered for Cyclic Adsorption Processes

Coal columnar activated carbon is the preferred choice wherever consistent bed performance across thousands of adsorption-desorption cycles matters. PSA systems, fixed-bed solvent recovery units, and gas purification trains all benefit from the uniform cylindrical geometry that granular carbon cannot provide.

The extruded cylinder shape packs with approximately 38% void fraction — consistent batch to batch — giving process engineers reliable pressure drop calculations. Combined with ≥95% hardness, the carbon resists abrasion from pressurization cycling and steam regeneration, maintaining low fines generation over the equipment lifetime.

Performance Highlights

≥ 95%

Hardness

Resists cycle-induced breakage

≥ 50%

CTC Adsorption

High organic vapor capacity

~38%

Void Fraction

Predictable pressure drop

Φ3 / 4 / 5 mm

Sizes Available

Match your equipment spec

Applications

  • PSA / VPSA nitrogen generation
  • PSA oxygen production (medical & industrial)
  • Solvent vapor recovery (benzene, toluene, MEK)
  • Natural gas purification & dehydration
  • Flue gas desulfurization (FGD)
  • Hydrogen sulfide removal from biogas
  • Chlorinated solvent recovery (TCE, PCE)
  • Industrial gas stream purification

Selecting the Right Diameter

DiameterΦ3mmΦ4mmΦ5mm
Adsorption RateFastestFastModerate
Pressure DropHighestMediumLowest
Best ForSmall PSA unitsGeneral PSA ✓Large industrial
MOQ10 t5 t10 t
Coal columnar activated carbon pellets in bulk

Technical Specifications

FormExtruded cylinder (columnar/pellet)
DiameterΦ3mm / Φ4mm / Φ5mm
Length4 – 10 mm (typical)
Raw MaterialBituminous coal
Iodine Number≥ 900 mg/g
CTC Adsorption≥ 50%
Methylene Blue≥ 180 mg/g
Hardness≥ 95%
Ash Content≤ 12%
Moisture≤ 5%
Bulk Density0.50 – 0.60 g/cm³
Packing Void~38%

Full adsorption isotherms and dynamic capacity data in TDS

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Related Products

Coal Pellet AC →Coal Granular AC →Catalytic AC (H₂S) →

Why Hojee for Columnar Carbon

🏭

Coal Source Control

We select bituminous coal from Ningxia and Shanxi for consistent iodine value and hardness batch to batch.

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Dimensional Consistency

±0.2mm diameter tolerance. Uniform length 4–8mm. Critical for PSA bed packing calculations.

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Full COA

Every lot: iodine, CTC, hardness, ash, moisture, bulk density, particle size distribution.

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PSA Qualification

Samples available for breakthrough testing in your actual PSA column before full order.

Frequently Asked Questions

What is coal columnar activated carbon?
Coal columnar activated carbon (also called coal pellet AC) is produced by mixing coal powder with binders, extruding into cylindrical shapes, then activating at high temperature. The uniform cylindrical shape provides consistent bed packing, low pressure drop, and high mechanical strength compared to irregular granular carbon.
Why is columnar carbon preferred for PSA systems?
PSA (Pressure Swing Adsorption) systems cycle through pressurization and depressurization hundreds of times daily. The uniform cylindrical shape packs consistently with ~38% void fraction, delivering predictable pressure drop across cycles. High hardness (≥95%) prevents particle breakage and fines generation that would block distributor plates or contaminate product gas.
What diameter for PSA nitrogen generators?
Φ4mm is the most common for PSA nitrogen generators. Φ3mm is used in smaller generators where faster kinetics are needed. Φ5mm is preferred for large industrial PSA units where pressure drop must be minimized. The choice depends on your bed height and target throughput.
Can columnar carbon be used for solvent recovery?
Yes. Columnar carbon with CTC ≥50% is widely used in fixed-bed solvent recovery units for benzene, toluene, acetone, MEK, hexane, and chlorinated solvents. The uniform shape allows efficient steam desorption (regeneration) and minimizes hot spots during exothermic adsorption of high-concentration solvents.
What is MOQ and lead time?
MOQ is 5 tons for standard Φ4mm grades. Lead time 10–15 days. Custom diameters (Φ3mm, Φ5mm) require MOQ 10 tons and 15–20 day lead time. Free samples (5 kg per size) available for qualification testing.

Need Samples for PSA Qualification?

5 kg samples per diameter available at no charge. We can supply dynamic adsorption data matched to your operating pressure.

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