Modeling of the pyrolysis of biomass under parabolic and exponential temperature increases using the distributed activation energy model Articles uri icon

publication date

  • June 2016

start page

  • 223

end page

  • 230

issue

  • 118

international standard serial number (ISSN)

  • 0196-8904

electronic international standard serial number (EISSN)

  • 1879-2227

abstract

  • A modification of the simplified Distributed Activation Energy Model is proposed to simulate the pyrolysis of biomass under parabolic and exponential temperature increases. The pyrolysis of pine wood, olive kernel, thistle flower and corncob was experimentally studied in a TGA Q500 thermogravimetric analyzer. The results of the measurements of nine different parabolic and, exponential temperature increases for each sample were employed to validate the models proposed. The deviation between the experimental TGA measurements and the estimation of the reacted fraction during the pyrolysis of the four samples under parabolic and exponential temperature increases was lower than 5 degrees C for all the cases studied. The models derived in this work to describe the pyrolysis of biomass with parabolic and exponential temperature increases were found to be in good agreement with the experiments conducted in a thermogravimetric analyzer. (C) 2016 Elsevier Ltd. All rights reserved.

keywords

  • distributed activation energy model (daem); biomass pyrolysis; thermal gravimetric analysis (tga); parabolic temperature profile; exponential temperature profile; sugar-cane bagasse; fluidized-bed; kinetic-analysis; devolatilization kinetics; degradation mechanisms; olive residue; wood; parameters; k(0)(e); coals