High-Efficiency Woodchips Dryer: 1.8x20m Single Drum Rotary Dryer in Indonesia

The single drum rotary dryer is used to handle high-humidity woodchips and deliver consistent, dry output for industrial use. Designed with a 1.8m diameter and 20m length, this dryer balances capacity and energy efficiency, making it suitable for small-to-medium biomass plants, sawmills, and biofuel producers across Indonesia. Whether you’re processing rubberwood, pine, or hardwood chips, this rotary dryer ensures optimal moisture reduction (from 50-60% to 10-15% moisture content) to enhance combustion efficiency, storage stability, and product value.

Product Overview: The 1.8x20m Single Drum Rotary Dryer

1. It refers to the drying cylinder's dimensions: 1.8 meters in diameter and 20 meters in length.
2. This size provides enough length to ensure sufficient "residence time" (the time material stays inside the drum) for thorough drying, without being too massive to transport or install.
3. Application: Wood chips, sawdust, wood shavings, palm fiber, and other biomass materials.
4. Target Moisture Reduction: Capable of reducing moisture from 45-50% down to 10-15% (depending on input rate and temperature).

Working Principle: How It Works

The single drum rotary dryer operates on the principle of direct heat transfer, ensuring rapid evaporation of moisture. Here is the step-by-step process:
● Feeding: Wet wood chips are fed into the hopper and conveyed into the 1.8m diameter cylinder.

● Heat Generation: A heating source (biomass burner, coal stove, or gas burner) generates hot air, which enters the dryer.

● Tumbling and Lifting: As the large drum rotates, specialized internal lifting flights (lifters) scoop up the wood chips and shower them down through the stream of hot air. This creates a "curtain" of material, maximizing the surface area exposed to heat.

● Evaporation: The hot air absorbs the moisture from the wood chips. The length of 20 meters ensures that the chips are dried evenly before they reach the discharge end.

● Discharge: The dried wood chips flow out of the discharge port, while the moisture-laden air is drawn out by an induced draft fan and passed through a cyclone dust collector to remove fine particles.

Key Advantages and Features

1. Optimized for Wood Materials
Wood chips are flammable and have uneven sizes. This dryer features a specialized internal structure designed to prevent clogging and minimize fire risks. The internal flights are arranged to prevent "wind tunnels," ensuring every chip is dried uniformly.

2. High Thermal Efficiency
The 1.8x20m dimension provides an excellent volume-to-surface area ratio. The drum is insulated to prevent heat loss—a crucial feature in Indonesia's tropical climate where ambient humidity is high. This results in lower fuel consumption per ton of dried material.

3. Durability and Robust Structure
Built with high-grade carbon steel or stainless steel options, the gear transmission and roller support systems are designed for heavy-duty, continuous operation (24/7). This durability reduces downtime and maintenance costs.

4. Flexible Fuel Options
Understanding the Indonesian market, this rotary dryer is compatible with various heat sources. You can use a biomass burner (using your own wood waste), coal, natural gas, or diesel, allowing you to choose the most cost-effective fuel available in your region.

5. Easy Maintenance
The single drum design is mechanically simple compared to triple-pass dryers. It has fewer moving parts, making it easier to inspect, clean, and repair.

Conclusion

The 1.8x20m Single Drum Rotary Dryer offers a proven, robust, and cost-effective solution to handle your wood drying needs. With its ability to process large volumes of wood chips efficiently, this machine guarantees a quick Return on Investment (ROI) by lowering fuel costs and increasing production output. Contact us today to get a quote for the 1.8x20m Woodchips Dryer.