DRYING
Before to be treated, the biomasse must be dryed. This step reduce wet and allows to heat it more easily. This is an additional part of the Biogreen® process which can be connected with all kind of dryer systems. ETIA can also offer a whole process including a dryer.
THERMOCHEMICAL TRANSFORMATION
The thermochemical transformation changes the product’s structure by applying heat in a controlled atmosphere. Depending on the operating parameters, the thermochemical treatment of the ligneous cellulosic biomass will produce bio-char, bio-oil, chemical ingredients, soil fertilizer, and etc. With Biogreen®, ETIA offers a multipurpose and efficient range of solutions designed for the energy and agrochemical conversion of the biomass.
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TORREFACTION
Biogreen can be used for biomass torrefaction, among other treatments. Torrefaction is one of the ways to create densification of the energy contained within a product. Treatment is achieved within a few minutes at 200°C to 300°C in an anaerobic environment. Biomass will lose weight (around 30%), and become crumbly. This prepares it to be crushed or gasified. Torrefaction also produces a more homogeneous product, with a low hygroscopicity that is easy to store.
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PYROLYSIS
The pyrolysis process will quickly heat biomass in the absences of oxygen at a high temperature, between 400 and 800°C or more. The product transformation produces three distinct outputs: bio-char or coke (solid fraction), bio-oil or crude oil (liquid fraction), and gas. Various applications are possible for these products: bio-char can be burned or used for soil amendment. Bio-oil can be used as fuel or used in the chemical industry as a renewable ingredient. It can also be used in the food industry as a liquid smoke flavor. Crude oil can be distilled to produce Diesel or Naphtha. The gas fraction is generally used as heating power for the process. Due to the unique design, the operating parameters of Biogreen® are precisely controlled. This allows the operator to adjust the proportion of all the three phases.
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GASIFICATION
Biogreen® can also be used for the gasification of torrefied products at a high temperature (800°C). The gas fraction which is preponderant can be cracked at 1200°C in a secondary stage and convert all molecules into CO and H2.
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