A METHOD OF PRODUCING BIO OIL USING ULTRA HIGH TEMPERATURE STEAM PYROLYSIS OF CARBONACEOUS SOLIDS

摘要

An advanced process concept for upgraded bio-oil production from carbonaceous, solid waste materials and biomass materials, especially a lignocellulosic raw material, in a one step method is proposed. Introduction of high-temperature steam in biomass pyrolysis process results in a low oxygen content upgraded bio-oil with an O/C ratio less than 0.2. The introduction of high-temperature steam allows the reforming and cracking of heavy bio-oil molecules to lower molecular weight sub- stances while the hydrogen radicals that are present due to steam dissociation re- actions are taking part in the hydrodeoxygenation (HDO) of the primary oxygenated species resulting from the pyrolysis.