Co-liquefaction of shemmu bituminous (SMB) and white pine sawdust (WPS) was performed in sub- and supercritical ethanol and the effects temperature, reaction time and initial atmosphere and pressure on the product distribution were studied. The oil yield increased with temperature and holding time, while the polymerization of radical fragments to macromolecular compounds at high temperature and long holding time result in the decrease of oil yield and the increase of residue yield. The residue yield increased with initial pressure under nitrogen atmosphere while that decreased with initial pressure under hydrogen atmosphere, implying the high hydrogen pressure is benefit for the decomposition of SMB and WPS. However, much radical fragment pyrolyzed from SMB and WPS combined with activated hydrogen and converted into gaseous product under high hydrogen pressure. GC/MS analyses indicated that phenols are the most abundant compounds in the oils and high initial pressure is benefit to the production of aliphatics. The relative content (RC) of phenols in the oil under hydrogen atmosphere was lower but the RC of polycyclic aromatic hydrocarbons (PAHs) was higher than that under nitrogen atmosphere.

CO-liquefaction of Shenmu bituminous and white pine sawdust in sub- and supercritical ethanol

249th National Meeting (2015)

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