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Modeling of alkali metal release during biomass pyrolysis

Hesameddin, Fatehi LU ; Li, Z. S. LU ; Bai, X. S. LU and Aldén, M. LU (2017) In Proceedings of the Combustion Institute2000-01-01+01:00 36(2). p.2243-2251
Abstract

The release of alkali metals (Na and K) during biomass pyrolysis was numerically and experimentally investigated using Laser-Induced Breakdown Spectroscopy technique that could extend the measurements of alkali metal concentration to the sooty pyrolysis stage. Two distinct peaks of metal concentrations were observed at the pyrolysis stage and at the gasification stage. Since during the pyrolysis stage a large temperature gradient exists inside the particle numerical simulations were performed to elucidate the experimental measurements and extract the kinetic data. For Na and K release the activation energies were in the range of 218 to 248 kJ/mole and 168 and 198 kJ/mole respectively. Equilibrium calculations were performed to identify... (More)

The release of alkali metals (Na and K) during biomass pyrolysis was numerically and experimentally investigated using Laser-Induced Breakdown Spectroscopy technique that could extend the measurements of alkali metal concentration to the sooty pyrolysis stage. Two distinct peaks of metal concentrations were observed at the pyrolysis stage and at the gasification stage. Since during the pyrolysis stage a large temperature gradient exists inside the particle numerical simulations were performed to elucidate the experimental measurements and extract the kinetic data. For Na and K release the activation energies were in the range of 218 to 248 kJ/mole and 168 and 198 kJ/mole respectively. Equilibrium calculations were performed to identify the stable Na and K compounds and their phases during the pyrolysis stage of the particle.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Alkali metal release, Biomass, In situ measurement, LIBS, Pyrolysis
in
Proceedings of the Combustion Institute2000-01-01+01:00
volume
36
issue
2
pages
9 pages
publisher
Elsevier
external identifiers
  • scopus:85013658502
  • scopus:84977617766
  • wos:000397458900068
ISSN
1540-7489
DOI
10.1016/j.proci.2016.06.079
language
English
LU publication?
yes
id
83bf210e-d05a-4c8e-b3c5-dd36598044e5
date added to LUP
2016-12-22 13:31:31
date last changed
2018-01-07 11:42:23
@article{83bf210e-d05a-4c8e-b3c5-dd36598044e5,
  abstract     = {<p>The release of alkali metals (Na and K) during biomass pyrolysis was numerically and experimentally investigated using Laser-Induced Breakdown Spectroscopy technique that could extend the measurements of alkali metal concentration to the sooty pyrolysis stage. Two distinct peaks of metal concentrations were observed at the pyrolysis stage and at the gasification stage. Since during the pyrolysis stage a large temperature gradient exists inside the particle numerical simulations were performed to elucidate the experimental measurements and extract the kinetic data. For Na and K release the activation energies were in the range of 218 to 248 kJ/mole and 168 and 198 kJ/mole respectively. Equilibrium calculations were performed to identify the stable Na and K compounds and their phases during the pyrolysis stage of the particle.</p>},
  author       = {Hesameddin, Fatehi and Li, Z. S. and Bai, X. S. and Aldén, M.},
  issn         = {1540-7489},
  keyword      = {Alkali metal release,Biomass,In situ measurement,LIBS,Pyrolysis},
  language     = {eng},
  number       = {2},
  pages        = {2243--2251},
  publisher    = {Elsevier},
  series       = {Proceedings of the Combustion Institute2000-01-01+01:00},
  title        = {Modeling of alkali metal release during biomass pyrolysis},
  url          = {http://dx.doi.org/10.1016/j.proci.2016.06.079},
  volume       = {36},
  year         = {2017},
}