Online experiments and modelling with a detailed reaction scheme of single particle biomass pyrolysis Articles uri icon

publication date

  • September 2017

start page

  • 411

end page

  • 425

issue

  • September

volume

  • 127

International Standard Serial Number (ISSN)

  • 0165-2370

Electronic International Standard Serial Number (EISSN)

  • 1873-250X

abstract

  • Detailed reaction schemes and experimental data for the online release of pyrolysis volatiles are required to gain a more fundamental understanding of biomass pyrolysis, which would in turn allow the process to be controlled in a more precise way and the development of more targeted applications. A detailed online characterisation of pyrolysis products has been conducted in single particle experiments with spruce pellets at different temperatures, obtaining a good closure of the elemental mass balances. The yields and online release of CO, CO2, H2O, CH4, other light hydrocarbons and total organic condensable species, as well as char yield and composition, can be predicted with a reasonable accuracy with the application of a single particle model, coupled with a detailed pyrolysis scheme, and a simple one-step scheme for tar cracking. In order to achieve it, improvements have been conducted in the pyrolysis scheme, mainly concerning the release of light hydrocarbons and char yield and composition. Deviations are still present in the different groups in which organic condensable species can be classified.

subjects

  • Mechanical Engineering
  • Physics
  • Renewable Energies

keywords

  • pyrolysis; model; particle; reaction scheme; biomass