Sugar Syrup

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The major part of the pyrolysis oil consists of pyrolytic sugar, which orginites from the cellulose (and partly from hemi-cellulose, and has just like the pyrolytic lignin fraction has a broad product distrubution. It consists of all kinds of small (monomeric) sugars in the anhydro-form like: levuglocosan (up to 15 wt% of pyrolytic sugar fraction) and f.i. cellobiosan (a dimer), furthermore it consists of larger oligomers and polymer fractions of cellulose. Typically up to 40-45 wt% of pyrolytic sugar can be recovered from pyrolysis oil, but this also depends on the raw material used and process conditions applied in pyrolysis.