where the thermal (only) pyrolysis occurs, once the set temperature was reached. Air in the reactor was purged during heating up to the reaction temperature by means of a nitrogen flow. The vapors from the pyrolysis then pass to the second zone, where they convert over the catalyst bed which is supported on a porous plate. The catalyst to oil relationship was calculated in a cumulative way, based on the organic compounds present in the bio-oil, which represented about 30% of
the dry biomass.