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Automatic Large-Capacity Particle Board Dryer

This equipment is a fully automatic, high-capacity particleboard dryer designed for large-scale industrial production. Utilizing advanced multi-pass drum drying technology and an intelligent control system, it efficiently, continuously, and stably processes wood particles (such as sawdust, wood chips, and flakes) to reduce the moisture content to the standard required for the particleboard pressing process (typically 2%-5%). The equipment features massive processing capacity, high thermal efficiency, low operating costs, safety, and reliability. It can achieve unmanned, fully automatic operation , making it an indispensable core drying component in modern particleboard and OSB production lines.


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Brand:
MINGHUNG

Product Description

Automatic Large-Capacity Particle Board Dryer

Rotary drum dryer for making FOSB

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Working Principle

This dryer utilizes three-pass drum drying technology, employing hot air as the drying medium to rapidly evaporate moisture through direct contact between the material and the hot air. The core process is as follows:

1. Wet Material Feeding: Wet particles are uniformly fed into the dryer's inlet device via a screw conveyor or belt conveyor. The inlet device features sealing and anti-clogging functions to ensure stable material entry into the drum.

2. Hot Air Generation: An associated hot air furnace (e.g., biomass combustion furnace, gas/oil burner) generates high-temperature clean flue gas, with temperatures automatically adjustable between 160℃ and 400℃ according to process requirements. The high-temperature gas is tempered in a mixing chamber to a suitable temperature before entering the drum.

3. Material Drying: The drum rotates at a low speed driven by the drive unit. Inside the drum, lifting flights repeatedly lift and cascade the material, forming a material curtain. This curtain comes into full contact with the counter-current or co-current high-temperature hot air, achieving intense heat and mass transfer. Due to the multi-pass drum structure (e.g., inner cylinder, middle cylinder, outer cylinder), the material, propelled by the hot airflow and gravity, moves from the inlet end to the discharge end along a helical path, passing sequentially through the inner, middle, and outer cylinders. This extends the drying path and enhances thermal efficiency.

4. Exhaust Gas Treatment: The exhaust gas, carrying water vapor and dust, is discharged from the drum and enters a dust collection system (such as a cyclone separator, baghouse filter, or wet electrostatic precipitator) for gas-solid separation. The cleaned gas is released into the atmosphere, while the separated fine dust can be recycled.

5. Dry Material Discharge: The dried particles are discharged from the end of the drum and transported via discharge conveying equipment to the next process (e.g., screening, blending). Throughout the process, the control system monitors parameters such as feed rate, hot air temperature, and discharge moisture content in real-time, automatically adjusting the air volume, fuel supply, and drum rotation speed to ensure the final moisture content remains stable within the set range (e.g., 2%-5%).

Chips drying Machine for PB Production Line

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Main Components

1. Feeding System: Includes a hopper, screw conveyor or belt conveyor, and anti-clogging devices to ensure uniform, continuous, and stable entry of wet particles into the dryer.

2. Hot Air Furnace: Provides the heat source required for drying, available in various forms such as biomass, gas, oil, or steam heat exchange, equipped with an automatic combustion control system for efficient and clean heat supply.

3. Main Drying Drum: Features a multi-pass structure (e.g., three-pass), consisting of an inner cylinder, middle cylinder, and outer cylinder coaxially nested. The inner walls are fitted with specially designed lifting flights and guide plates to lift, cascade, and direct the material flow. The drum is externally insulated to minimize heat loss.

4. Drive Unit: Comprises an electric motor, reducer, gear/ring gear or friction wheel drive system, enabling the drum to rotate smoothly at the set speed.

5. Supporting Roller and Thrust Roller Assemblies: Support the weight of the drum and ensure stable axial and radial operation.

6. Discharge System: Includes a discharge hood and discharge conveying equipment (such as a screw conveyor or scraper conveyor) for collecting and transporting the dried particles.

7. Dust Collection System: Typically consists of a primary cyclone separator and a secondary baghouse filter (or wet electrostatic precipitator) to separate dust from the exhaust gas, ensuring emissions comply with standards.

8. Induced Draft Fan System: Provides the necessary negative pressure for the system, ensuring smooth flow of hot air through the drying system and drawing exhaust gases into the dust collection system.

9. Control System: A PLC-based automatic control system with a touch screen HMI, enabling real-time monitoring and adjustment of parameters such as temperature, pressure, rotation speed, and moisture content, achieving fully automatic operation and fault alarms.

10. Safety Devices: Include a spark detection and automatic extinguishing system, explosion vents, over-temperature alarms, emergency discharge devices, etc., to ensure safe equipment operation.

11. Piping and Connecting Components: Hot air ducts, regulating valves, expansion joints, etc., connecting various units.