Bio-oil production from fast pyrolysis of furniture processing residue

Abstract

The pyrolysis characteristic of furniture processing residue (FPR), which was analyzed by thermogravimetric analysis (TGA) under nitrogen atmosphere, mainly decomposed between 230 °C and 500 °C. The FPR was submitted to fast pyrolysis in a bubbling fluidized-bed reactor (BFR) for converting into bio-oil, bio-char. The product distribution and characteristics of bio-oil depend on the operating conditions (temperature, fluidizing flow rate, particle size of sample). The bio-oil yield showed the highest value (50.68 wt%) at the pyrolysis temperature of 450 °C with a biomass particle size of 1.0 mm and a fluidization velocity of 2.0×Umf. The bio-oil had high selectivity for dioctyl phthalate, levoglucosan, and phenolic derivatives. The carbon number proportions in bio-oils of FPR were 32.74 wt% for C5–C11 fraction, 47.60 wt% for C12–C18 fraction and 19.38 wt% of C25–C38 fraction, respectively. The gas product included CO, CO2, H2, and hydrocarbons (C1–C4), and the selectivity of CO2 was the highest. The high heating value (HHV) of gas products was between 4.60 and 12.90 MJ/m3. The bio-char shows high HHV (23.87 MJ/kg) and high C content (62.47 wt%) that can be applied as a solid fuel.