‘Biorefinery’ - production of biochar or biocarbon with a high energy density using state-of-the-art technology
Carbonisation: With our proprietary technology, we design and construct production plants for biochar applications with carbon content reaching up to 97%. Our process employs pyrolysis, in which biomass is heated in the absence of air, utilising an automated batch process. The waste gases and pollutants generated during carbonisation are thermally recycled within a closed-loop system. The excess energy produced can be used thermally or converted into power. The entire production process – from raw material delivery to biochar processing – is highly automated and operates on a 24/7 shift basis. Polytechnik offers plants with annual production capacities ranging from 3,000 to 9,000 tonnes.
Torrefaction: Our specialised combustion unit enables the lean gas produced during torrefaction to be utilised in addition to the solid fuel.
Polytechnik’s torrefaction plants are the latest addition to our product portfolio. These plants have an annual production capacity of up to 60,000 tonnes, converting various types of solid biomass into a dimensionally stable, easily transportable and storable product through pyrolysis at around 300°C in the absence of air. The energy released during this process that is not needed for the torrefaction can be harnessed to generate hot water or steam or to heat thermal oil, depending on customer requirements.
Torrefied material can be used as a substitute for fossil coal in numerous applications, such as the steel industry. We customise our torrefaction plants to meet specific customer requirements, particularly regarding the input material. This customisation ensures an optimised performance and enhances economic efficiency for our clients.
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