Biochar kiln

 The commonly seen nut shells such as jujube shells, walnut shells, pistachio shells, olive shells, coffee husks, palm shells, hazelnut shells, coconut shells, etc., can all be processed into charcoal using fruit shell carbonization equipment. Prior to carbonization, the fruit shells need to be crushed using a crusher. Our Biochar kiln（continuous carbonization furnace ）produces fruit shell charcoal particles after the carbonization process. These charcoal particles have various applications. They can be used to manufacture barbecue charcoal sticks and hookah charcoal. They can also serve as raw materials for producing activated carbon products, particularly coconut shell charcoal, which boasts excellent performance. This activated carbon can be utilized in diverse fields such as water purification and metallurgy.

The Biochar kiln operates on a continuous process. The basic steps include preheating the furnace, feeding the raw material, and discharging the charcoal. It is termed a "continuous carbonization furnace" because, after the furnace is preheated, raw materials are continuously fed into the furnace, and charcoal is continuously discharged.

The working principle of the continuous carbonization furnace is that there are guide plates inside the furnace. After the raw materials enter the main carbonization chamber, they move horizontally under the influence of these guide plates due to the rotation of the main chamber. Gradually, they shift from the feed inlet to the charcoal discharge outlet, undergoing carbonization during this movement.

Both the feeding and charcoal discharge points are equipped with air-shutoff devices to isolate them from ambient air. This, in combination with the main chamber's draft fan, ensures a low-oxygen environment inside the main chamber during the continuous feeding and charcoal discharging process.

Raw materials
seeds; shells and pits of tree-fruits;wood chips;bamboo;shrubby and other plant materials, the fraction of which is from 5 to 30 mm with a moisture content of not more than 15%.

 wood chips                                coconut shells                              hazelnut shells                                rice husk                                                   bamboo                                  Walnut shells

Received product：

BBQ charcoal:

  charcoal：Charcoal is a common solid fuel produced by subjecting wood to high temperatures in a low-oxygen environment. It is an ideal choice for grilling, stoves, and fireplaces.

  Biochar：

Biochar, as a fertilizer or hydroponic growth intended for the agricultural industry, is made from plant raw materials and does not contain harmful substances.

Shisha charcoal：

Shisha charcoal, also known as hookah or water pipe charcoal, is specially crafted for the traditional art of hookah smoking. Made from natural materials like coconut shells or bamboo.

Activated carbon:

Activated carbon, a powerful adsorbent, purifies air and water by trapping impurities and chemicals. Its high surface area and porosity make it efficient in removing toxins, odors, and pollutants. An eco-friendly solution for cleaner and safer environments.

 shisha charcoal                 coconut shell activated carbon               hazelnut charcoal                      rice husk biochar                                 bamboo charcoal                            Walnut shell charcoal

 The carbonization process in a Biochar kiln can generally be divided into the following three temperature stages:

     Drying Stage: From ignition to the furnace temperature reaching 160°C, the moisture content in the briquettes relies mainly on external heating and heat generated from their own combustion for evaporation. The chemical composition of the briquettes remains largely unchanged during this stage.

    Initial Carbonization Stage: This stage is driven primarily by the combustion of the briquettes themselves, raising the furnace temperature to between 160°C and 280°C. At this point, thermal decomposition reactions occur in the woody material, leading to changes in its composition. Unstable components such as hemicellulose undergo decomposition, producing substances like CO2, CO, and small amounts of acetic acid.

   Full Carbonization Stage: This stage occurs within the temperature range of 300°C to 650°C.During this stage, the woody material undergoes rapid thermal decomposition, simultaneously generating significant amounts of liquid products such as acetic acid, methanol, and wood tar. Additionally, combustible gases like methane and ethylene are produced. These gases can be controlled and utilized through valves for cyclic combustion. The combined processes of thermal decomposition and gas combustion generate a substantial amount of heat, raising the furnace temperature. The woody material is distilled into charcoal under high temperatures.

For the production of high-temperature charcoal, apart from the three stages mentioned above, additional heat is applied to raise the furnace temperature further to around 800°C to 1000°C. This helps to expel volatile substances remaining in the charcoal, increase the carbon content, enhance the graphite structure within the charcoal, and improve its conductivity.

 The professional experimental testing team can provide experiments and testing of various key data such as fixed carbon content and ash content. Provide you with reliable solutions.