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LIBS measurements and numerical studies of potassium release during biomass gasification

Hesameddin, Fatehi LU ; He, Y.; Wang, Z.; Li, Zhongshan LU ; Bai, Xue-Song LU ; Aldén, Marcus LU and Cen, K. F. (2015) In Proceedings of the Combustion Institute 35(2). p.2389-2396
Abstract
This paper reports on a joint numerical and experimental investigation of the release of potassium from biomass during gasification process. In this work, laser-induced breakdown spectroscopy (LIBS) was adopted to measure quantitatively the concentration of potassium from gasifying biomass. The effect of temperature on the potassium release is investigated in hot gas mixture of CO2, H2O with different concentration of O-2. A biomass thermochemical conversion model is employed to study the physical and chemical processes inside the particle. A sub-model is developed to simulate the various stages of potassium release during biomass conversion and to improve the chemical kinetic mechanism and chemical kinetic constants of the release rate.... (More)
This paper reports on a joint numerical and experimental investigation of the release of potassium from biomass during gasification process. In this work, laser-induced breakdown spectroscopy (LIBS) was adopted to measure quantitatively the concentration of potassium from gasifying biomass. The effect of temperature on the potassium release is investigated in hot gas mixture of CO2, H2O with different concentration of O-2. A biomass thermochemical conversion model is employed to study the physical and chemical processes inside the particle. A sub-model is developed to simulate the various stages of potassium release during biomass conversion and to improve the chemical kinetic mechanism and chemical kinetic constants of the release rate. Two stages of the potassium release associated to devolatilization and char reaction and ash-cooking stages are proposed. The rate of release of potassium during char reaction and ash-cooking stages follows a first order Arrhenius expression as 2.5 X 10(5 +/- 0.2) exp (-266 X 10(3)/RT). The kinetics rate constants along with the reaction path appear to be able to predict the potassium release with an acceptable accuracy. (C) 2014 The Combustion Institute. Published by Elsevier Inc. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Biomass, Gasification modeling, Alkali species, LIBS, In situ, measurement
in
Proceedings of the Combustion Institute
volume
35
issue
2
pages
8 pages
publisher
Elsevier
external identifiers
  • wos:000348048800145
  • scopus:84964285682
ISSN
1540-7489
DOI
10.1016/j.proci.2014.06.115
language
English
LU publication?
yes
id
e2a30452-484e-4303-a8ad-f9a488821a31 (old id 5204265)
date added to LUP
2015-03-25 14:38:21
date last changed
2017-10-22 03:24:46
@article{e2a30452-484e-4303-a8ad-f9a488821a31,
  abstract     = {This paper reports on a joint numerical and experimental investigation of the release of potassium from biomass during gasification process. In this work, laser-induced breakdown spectroscopy (LIBS) was adopted to measure quantitatively the concentration of potassium from gasifying biomass. The effect of temperature on the potassium release is investigated in hot gas mixture of CO2, H2O with different concentration of O-2. A biomass thermochemical conversion model is employed to study the physical and chemical processes inside the particle. A sub-model is developed to simulate the various stages of potassium release during biomass conversion and to improve the chemical kinetic mechanism and chemical kinetic constants of the release rate. Two stages of the potassium release associated to devolatilization and char reaction and ash-cooking stages are proposed. The rate of release of potassium during char reaction and ash-cooking stages follows a first order Arrhenius expression as 2.5 X 10(5 +/- 0.2) exp (-266 X 10(3)/RT). The kinetics rate constants along with the reaction path appear to be able to predict the potassium release with an acceptable accuracy. (C) 2014 The Combustion Institute. Published by Elsevier Inc. All rights reserved.},
  author       = {Hesameddin, Fatehi and He, Y. and Wang, Z. and Li, Zhongshan and Bai, Xue-Song and Aldén, Marcus and Cen, K. F.},
  issn         = {1540-7489},
  keyword      = {Biomass,Gasification modeling,Alkali species,LIBS,In situ,measurement},
  language     = {eng},
  number       = {2},
  pages        = {2389--2396},
  publisher    = {Elsevier},
  series       = {Proceedings of the Combustion Institute},
  title        = {LIBS measurements and numerical studies of potassium release during biomass gasification},
  url          = {http://dx.doi.org/10.1016/j.proci.2014.06.115},
  volume       = {35},
  year         = {2015},
}