Steam activation rotary kiln for coconut shell activated carbon

1.Product Introduction Calcination Rotary Kiln

The Steam Activation Rotary Kiln is a high-temperature thermal processing system specifically designed for the continuous, large-scale production of coconut shell activated carbon. Utilizing high-quality coconut shells as raw material, the equipment employs a two-step process of carbonization and steam activation. In a high-temperature (typically 900–1,000°C), anaerobic or low-oxygen environment, water steam is used to deeply activate the carbonized material. This process carves out a highly developed porous structure within the carbon skeleton. Featuring an inclined rotating cylinder, precise temperature control, and advanced sealing, the kiln ensures uniform heating and continuous discharge for industrial-grade production of premium activated carbon.

2.Application Calcination Rotary Kiln

• Drinking Water Purification: The produced carbon is widely used in residential and industrial water filters to efficiently remove residual chlorine, odors, and organic pollutants (such as trihalomethanes).
• Gold Extraction: Due to its superior adsorption capacity for gold-cyanide complexes, it is the core adsorbent used in Carbon-in-Pulp (CIP) and Carbon-in-Leach (CIL)processes in gold smelting.
• Air Purification: Utilized in HVAC systems, refrigerators, automotive deodorizers, and industrial off-gas treatment to adsorb formaldehyde, benzene series, and hazardous gases.
• Food & Pharmaceutical Refining: Used for decolorization, deodorization, and solvent recovery in the MSG, beverage, and pharmaceutical industries.
• Environmental Remediation: Treating industrial wastewater and waste gases containing heavy metals and organic pollutants to support emission reduction.

3.Working Principle Calcination Rotary Kiln

1. Raw Material Pretreatment: Coconut shells are crushed and screened before being fed into a carbonization furnace, where initial pyrolysis generates the carbonized intermediate.
2. Rotary Kiln Activation: The carbonized material enters the inclined rotary kiln. As the kiln shell rotates slowly, the material moves from the high end toward the discharge end. High-temperature water steam is introduced from the lower end, achieving counter-current contact with the carbon.
3. Steam Activation Reaction: At 900–1,000°C, the steam reacts with carbon . This chemical etching of the carbon skeleton creates a vast network of micropores and mesopores, significantly increasing the specific surface area to over 1,100 m²/g.
4. Cooling & Collection: The activated carbon is cooled via a dedicated system before being screened and packaged as the final product.

4.Advantages Calcination Rotary Kiln

• Continuous Production: The rotary kiln supports 24/7 continuous operation with high automation (PLC control), drastically increasing capacity and batch stability.
• Uniform Activation: The rotation of the kiln shell ensures even heat distribution. Combined with precise temperature and steam regulation, this achieves consistent and repeatable pore structures.
• Energy Saving Eco-Friendly: Modern units are equipped with waste heat recovery systems that can preheat secondary air to over 700°C, lowering energy consumption. The sealed design minimizes off-gas leakage.
• Sustainable Raw Material: By utilizing coconut shells—a renewable resource—the process turns agricultural waste into high-value products, aligning with green manufacturing trends.

5.Technical Specifications

6.Our Solutions