BTG-BTL's fast pyrolysis produces a liquid product from almost any type of ligno-cellulosic biomass. Such pyrolysis oils contain negligible amounts of ash, and have a volumetric energetic density of 5 to 20 times higher than the original biomass.
Pyrolysis oils from biomass are typically red/brown liquids with a pungent odor. They contain fragments of cellulose, hemicelluloses, lignin, and extractives. A wide variety of functional groups (a.o. acids, aldehydes, ketones, carbohydrates, furans, pyrans, aromatics, hydrocarbons) are present in the oil, and several of them can even be present in a single component.
Typical characters of the oil are in case of woody feedstock:
|Density||1150 - 1250 kg/m3|
|Lower Heating Value||16-18 GJ/ton|
|Viscosity||25 - 1000 cP (for pine oil this is between 20 - 60 cP)|
|Acidity (pH)||2,5 - 3,5|