METHOD FOR THE PRODUCTION OF FUEL GRANULES

摘要

The present invention relates to a method for production of fuel pellets from lignocellulosic materials, namely, grass, straw, wood, sawdust, bark and agricultural residues by mixing preliminary ground lignocellulosic raw material with a binding agent with the further pelletization and drying of obtained mixture. The present invention is characterized in that wood bark, including birch outer bark, is used as the binding agent in the amount of 10-20 % by weight of mixture, from which biologically active compounds, lupeol and betulenol, are extracted with the use of organic solvents. If bark of white alder is used, lipophilic compounds, diarylheptanoids and condensed tannins are preliminary extracted therefrom. The residue of bark of white alder after the extraction of lipophilic compounds, diarylheptanoids and condensed tannins, and after the removal of solvents, is conditioned up to the moisture content of 12-14%.