Bio-oil production by fast pyrolysis from agriculture residue in northeastern China.

In this paper, three typical agriculture residues (corn cob (CC), peanut shell (PS), and pine cone (PC)) from northeastern China were investigated for fast pyrolysis to produce bio-oil. The influences of carrier gas velocity, temperature, and particle size of biomass on bio-oil yield were studied. With the increase of carrier gas velocity, the bio-oil yield increased, but the increase rate of bio-oil yield first increased and then decreased. As temperature increased, the bio-oil yield first increased and then decreased. The variation trends of bio-oil yield with particle size for the three biomasses were different. For CC, the bio-oil yield increased with the reduction of the granularity; but it was completely opposite for PS and PC. The main components of the exhaust gas were CO2, CO, H2, and small quantities of CHx. The compounds of bio-oil were mostly with oxygen functional groups, resulting in the higher content of oxygen element, then leading to low calorific value. [ABSTRACT FROM AUTHOR]