Hoist Carbonization Furnace for Efficient Biomass Charcoal Production

Hoist carbonization furnace is designed for customers who want to turn wood and other suitable biomass materials into charcoal on a commercial scale. With a daily capacity of about 1–3 tons, this charcoal carbonization machine is suitable for charcoal production businesses using wood sticks, branches, wood scraps, bamboo, and similar materials.

The produced charcoal can be used as barbecue charcoal and fuel, or further processed into charcoal briquettes for applications such as shisha charcoal and other molded charcoal products. The lifting design makes loading and unloading easier, while the reusable gas generated during carbonization helps reduce the need for continuous fuel feeding.

What Is a Hoist Carbonization Furnace?

A hoist carbonization furnace is a vertical charcoal-making machine with a removable inner retort and a lifting system. Instead of manually moving the raw materials in and out of the furnace, the materials are loaded into the inner retort first. An automatic traveling crane then lifts the retort into the outer furnace.

Once carbonization is completed, the same crane can lift the retort out for cooling and unloading.

This design is particularly useful for customers who process a large amount of biomass and want to make charcoal in batches while keeping the operation relatively simple.

What Can You Make with This Carbonization Furnace?

The main finished product is wood charcoal. Depending on the carbonization conditions and raw material, the charcoal can be produced with different densities, hardness, ignition characteristics, and burning times.

Typical applications include:

• Barbecue charcoal
• Heating fuel
• Biomass charcoal
• Charcoal for further briquetting
• Raw charcoal for shisha or hookah charcoal production

For customers producing molded charcoal, the carbonized material can be sent to a subsequent charcoal briquette production process.

Suitable Raw Materials

The furnace is mainly suitable for wood-based and other appropriate biomass materials, including:

• Wood briquettes
• Branches
• Logs
• Wood scraps
• Bambu
• Wood waste
• Other suitable biomass materials

The raw material should have a suitable size and moisture content for the carbonization process. If you are unsure whether your material can be processed, you can send us photos or information about the raw material for evaluation.

For materials such as olive pomace, direct carbonization in this furnace is generally not recommended. A more suitable process is to first use a sawdust briquetting machine to form the material and then carbonize the formed briquettes.

How Does the Carbonization Process Work?

The furnace uses airflow carbonization, with hot air circulating inside the furnace to gradually heat the biomass.

At the beginning, waste wood or other suitable combustible materials can be burned at the bottom of the furnace to provide the initial heat. As the temperature rises, the moisture in the raw material is gradually removed.

When the temperature reaches around 230°C, combustible gases begin to form. As carbonization continues and the temperature reaches approximately 280°C, these gases can be recycled and used for combustion.

This means that after the furnace reaches stable operation, it does not need to continuously consume additional fuel. The combustible gas generated during the process can help maintain the required temperature.

The furnace temperature can reach up to approximately 500°C, depending on the raw material and operating conditions.

From Initial Heating to Self-Sustaining Carbonization

The carbonization process can be roughly understood in several stages.

• 90–150°C: The main focus is moisture removal. The heating intensity is controlled to gradually dry the raw material.
• Around 150°C: The moisture-removal stage continues, and the heating intensity can be increased as carbonization develops.
• Around 230°C: Combustible gases begin to be generated during carbonization.
• Around 280°C: The generated gases can be recycled for combustion, helping provide heat for continued carbonization.

The complete carbonization time is generally around 8–10 hours, while cooling usually takes another 8–10 hours or longer, depending on the material and operating conditions.