Columnar activated carbon is a highly efficient adsorption material made from high-quality coal, coconut shells, and wood chips as core raw materials through a series of precise processes including crushing, mixing, extrusion molding, and carbonization activation. It appears as a black, regular cylindrical shape with a particle size ranging from 1.5-8mm. Its internal pore structure is well-developed, with a reasonable distribution of micropores, mesopores, and macropores. Combined with a super-large specific surface area of ​​≥850m²/g and a high iodine adsorption value (300-1200mg/g), it possesses core advantages such as large adsorption capacity, fast adsorption speed, high mechanical strength (>92%), wear resistance, and easy regeneration. It is a multifunctional core material in environmental protection and industrial purification fields.

Columnar Activated Carbon Product Details:

I. Core Raw Materials and Production Process

Raw Material Selection: High-purity anthracite coal, high-quality coconut shells, or natural wood chips are carefully selected to ensure low ash and low impurity characteristics from the source. Coconut shell-based products exhibit superior adsorption performance, while coal-based products offer significant cost-effectiveness advantages.

Refining Process: The process involves key steps such as raw material crushing (over 95% passing through 180 mesh), binder mixing, precision extrusion molding, low-temperature carbonization, and high-temperature activation. Some products undergo additional acid washing and impregnation treatments to specifically enhance the adsorption capacity of particular pollutants, ultimately forming structurally stable, highly porous columnar particles.

II. Key Performance Indicators

Basic Indicators: Iodine adsorption value 300-1200 mg/g, specific surface area > 850 m²/g, total pore volume > 0.8 cm³/g, packing density 0.35-0.55 g/cm³, moisture ≤ 6%, ash content ≤ 10%.

Functional Indicators: Methylene blue value 120-150 mg/g, residual chlorine adsorption rate ≥ 85%, carbon tetrachloride adsorption rate 40-90%, strong chemical stability, maintaining good adsorption performance in both acidic and alkaline environments.

Practical Specifications: Mechanical strength > 92%, resistant to airflow erosion and high-pressure impact, minimal performance degradation after regeneration, and a service life up to 1.4 times that of ordinary activated carbon (average 2-3 years).

III. Core Advantages

Superior Adsorption Efficiency: The well-developed pore structure forms a strong adsorption field, enabling rapid capture of harmful substances in gases and liquids. It has a long adsorption saturation cycle for low to medium concentration (VOCs < 1000 mg/m³) waste gas, eliminating the need for frequent replacement.

Wide Applicability: Reasonable pore distribution adapts to pollutants of different molecular weights, accommodating both gas and liquid phase adsorption needs. It is also resistant to airflow fluctuations and has strong impact resistance.

High Economic Efficiency: High mechanical strength prevents pulverization, simple regeneration process, and multiple recycling cycles significantly reduce long-term operating costs. Different specifications and raw material types can flexibly match different budgets and operating conditions.

IV. Main Application Areas

* **Gas Treatment:** Primarily used for VOCs treatment in furniture factories, paint booths, and small printing plants, as well as the purification of harmful gases such as sulfur dioxide, nitrogen oxides, and benzene compounds in chemical waste gas and vehicle exhaust. Suitable for low to medium air volume and concentration scenarios.

* **Water Treatment and Purification:** Can be used for dechlorination of urban drinking water, pure water preparation, and deep treatment of industrial wastewater. It efficiently adsorbs organic matter, heavy metal ions, dyes, and odor substances in water, improving water transparency and safety.

* **Desulfurization and Denitrification:** Targets the removal of acidic gases such as H₂S from biogas, water gas, and coke oven gas to meet environmental emission standards. Suitable for gas purification in the chemical and power industries.

* **Solvent Recovery:** Has a strong adsorption capacity for organic solvent vapors such as benzene, toluene, xylene, acetone, and ethanol, enabling solvent recovery and reuse, reducing production costs in the chemical and pharmaceutical industries.

Other applications: It can also be used as deoxygenation and purification packing material for nitrogen generators/air separation equipment, gold extraction tailings recovery material, food and beverage decolorization and refining agents, and functional materials in fields such as cigarette filters, automobile exhaust purification, and soil improvement.

V. Applicable Scenarios and Selection Recommendations

For low-to-medium concentration VOCs treatment and scenarios requiring high adsorption lifespan, coconut shell-based or high-iodine-value (≥800mg/g) coal-based products are preferred; For deep industrial wastewater treatment and large-scale drinking water purification projects, 3.0-4.0mm specification products are recommended to balance adsorption efficiency and water flow resistance;

• For specialized scenarios such as solvent recovery, desulfurization, and denitrification, impregnated and modified special columnar activated carbon can be selected to improve the adsorption selectivity of target pollutants.