Heat Treated Wood Kilns - Airex Industries

WOOD KILNS

Engineered to deliver the industry’s best temperature uniformity, the FEBX500 Heat Treated Wood Kiln by Airex Industries outperforms the competition with its superior airflow and precise temperature control.

Torrefaction is a specialized heat treatment process that enhances the properties of various wood species. Unlike standard drying, torrefaction is conducted at high temperatures ranging from 160°C to 250°C (320°F to 490°F), transforming the wood into a highly durable, water-resistant material. This process increases the wood’s resistance to decay, fungal attacks, and insects, while also making it hydrophobic—causing water to bead on the surface without penetrating the fibers. No chemical treatments are needed for outdoor use, and torrefaction can even alter the wood’s color, giving lighter varieties rich tones from golden honey to deep, dark hues.

Airex Industries has developed a state-of-the-art biomass torrefaction oven specifically for this process. Designed for seamless operation, this advanced oven requires minimal human intervention—just load the wood, input the settings, and let the fully automated system handle the rest!

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PRODUCT DETAILS

OPERATION

First, the load of wood has to be stacked on the cart specially designed for this application. The cart is introduced in the biomass torrefaction oven with the help of the rail system that allows the insertion and extraction of the wood, effortlessly and securely. Once done, simply lock the door properly. It remains only to enter the technical data relating to the variety wood to be torrefied in the computer and the process begins. All stages are fully managed by the biomass torrefaction oven computer.

Once the process finished, just extract the load using the rail system and to introduce it in the steaming pit. It is a chamber allowing the wood to cool down in a controlled and safe environment. Once out of this room, the wood is ready to be transformed.

BENEFITS

Basic capacity of 3 000 foot board measure (FBM) per batch.
Suitable for all woods varieties.
Modular ventilation system, allowing you to receive an oven to the length that will suit your needs.
Heating by electric heat coil.
High-efficiency electric motor.
Automatically reversible air flow.
Adjustable air distribution within the biomass torrefaction oven.
Smart door lock, making impossible to open the biomass torrefaction oven when it is on.
Access door making the inspections and maintenances easily.
Rail on the floor to easily enter the wood load on a cart designed for that purpose.
Autonomous water injection system used for humidification.
Flowmeter for the water injection system
Thermal probes network to visualize the temperature:
- At the entrance of the ventilation system.
- At the exit of the ventilation system.
- Inside the wood.
High-temperature internal pressure sensor.
Control panel with PLC annexed to the biomass torrefaction oven

SPECIFICATIONS

External dimensions: (L x W x H) 276″ x 114″ x 170″
Internal lining: Stainless steel 304
Load capacity: 3 000 FBM
Operating temperature: 160 C à 250°C [320 °F à 490 °F]
Total capacity of heating coils: 200 kW
Total capacity of fans: 30 000 CFM
Electric motors: 2 x 25 HP
Input power: 600V
Temperature sensor: Type K
Number of nozzles for water injecting: 8
Capacity of each nozzle: 0,25 gpm @ 40 psi

RELATED EQUIPMENT FOR THE TORREFACTION PROCESS

STEAMING PIT

Following its passage in the biomass torrefaction oven, the wood is introduced into the steaming pit. It allows cooling down the wood in a controlled and safe environment.