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Indexed by:Journal Papers

Date of Publication:2015-07-01

Journal:JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS

Included Journals:SCIE、EI

Volume:114

Page Number:155-162

ISSN No.:0165-2370

Key Words:Biomass pyrolysis; Pyrolysis temperatures; Solid residence times

Abstract:In this work, the continuous pyrolysis of pine sawdust is performed with a screw reactor to investigate the influence of pyrolysis temperature and solid residence time on products and energy distribution. Gas chromatograph/mass spectrometer (GC/MS) and Fourier transform infrared spectroscopy (FTIR) were used to confirm the identities of bio-oil. The combustion kinetics of bio-char had analyzed by thermogravimetric (TG). The results of gas chromatograph-showed that carbon monoxide is the main component in produced gas, and the maximum gas yield of 54.5% was obtained at the temperature of 900 degrees C. Compositional analysis of the oil products showed that phenols were the major components, and its proportion increased at higher temperatures and longer solid residence times. The activation energy of bio-char combustion is 461.10 kJ mol(-1) and 108.45 kJ mol(-1) in the ranges of 290-314 degrees C and 314-518 degrees C, respectively. The maximum of energy profit rate is 6.49% obtained at the temperature of 900 degrees C with the solid residence time of 6min. (C) 2015 Elsevier B.V. All rights reserved.