Functionality

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Within the Schottdorf kiln there is a continuous process of biomass gasification. The biomass moves from the top of the kiln to bottom. During the process the biomass is dried, heated (distillation zone) and transformed into biochar in the glowing zone. The biochar is automatically removed and transferred into a mixer where 20 % water is added to cool down the biochar. The gas originates from the lower air supply and moves from the bottom to top of the kiln.

The air supply looses its oxygen in the glowing zone and heats up to approximately 700 degrees Celsius. During this process the distillation zone develops above the glowing zone out of which the gas moves up further, cools down and extracts water from the down moving biomass. Through this the gas is also filtered. When the gas moves out of the Schottdorf kiln its temperature is 98°C. 

The Schottdorf kiln delivers 300 kW thermal energy through the gas. In comparison to other methodologies of burning biomass directly, the Schottdorf kiln has no problems with smoke and dust (especially fine dust). 

The gas can also be introduced into the fermenter of a biogas plant. This improves the efficiency of the biogas plant.

The Schottdorf method is neither gasification nor pyrolysis. The focus is on the production of pure biochar. The resulting gas is a by-product and can be used as an energy source.