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Title: Simultaneous measurement of the surface temperature and the release of atomic sodium from a burning black liquor droplet

Abstract

Simultaneous measurement of the concentration of released atomic sodium, swelling, surface and internal temperature of a burning black liquor droplet under a fuel lean and rich condition has been demonstrated. Two-dimensional two-colour optical pyrometry was employed to determine the distribution of surface temperature and swelling of a burning black liquor droplet while planar laser-induced fluorescence (PLIF) was used to assess the temporal release of atomic sodium. The key findings of these studies are: (i) the concentration of atomic sodium released during the drying and devolatilisation stages was found to be correlated with the external surface area; and (ii) the insignificant presence of atomic sodium during the char consumption stage shows that sodium release is suppressed by the lower temperature and by the high CO{sub 2} content in and around the particle. (author)

Authors:
;  [1]; ;  [1];  [2]
  1. Centre for Energy Technology, The University of Adelaide, SA 5006 (Australia)
  2. Process Chemistry Centre, Aabo Akademi, Biskopsgatan 8 FI-20500 Aabo (Finland)
Publication Date:
OSTI Identifier:
21305681
Resource Type:
Journal Article
Journal Name:
Combustion and Flame
Additional Journal Information:
Journal Volume: 157; Journal Issue: 4; Other Information: Elsevier Ltd. All rights reserved; Journal ID: ISSN 0010-2180
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; SODIUM; SPENT LIQUORS; DROPLETS; CARBON DIOXIDE; TEMPERATURE DEPENDENCE; SURFACES; SWELLING; COLOR; SURFACE AREA; CHARS; TEMPERATURE DISTRIBUTION; DRYING; FUELS; CORRELATIONS; Surface temperature

Citation Formats

Saw, Woei L, Nathan, Graham J, School of Mechanical Engineering, The University of Adelaide, Ashman, Peter J, Alwahabi, Zeyad T, School of Chemical Engineering, The University of Adelaide, and Hupa, Mikko. Simultaneous measurement of the surface temperature and the release of atomic sodium from a burning black liquor droplet. United States: N. p., 2010. Web. doi:10.1016/J.COMBUSTFLAME.2009.12.016.
Saw, Woei L, Nathan, Graham J, School of Mechanical Engineering, The University of Adelaide, Ashman, Peter J, Alwahabi, Zeyad T, School of Chemical Engineering, The University of Adelaide, & Hupa, Mikko. Simultaneous measurement of the surface temperature and the release of atomic sodium from a burning black liquor droplet. United States. doi:10.1016/J.COMBUSTFLAME.2009.12.016.
Saw, Woei L, Nathan, Graham J, School of Mechanical Engineering, The University of Adelaide, Ashman, Peter J, Alwahabi, Zeyad T, School of Chemical Engineering, The University of Adelaide, and Hupa, Mikko. Thu . "Simultaneous measurement of the surface temperature and the release of atomic sodium from a burning black liquor droplet". United States. doi:10.1016/J.COMBUSTFLAME.2009.12.016.
@article{osti_21305681,
title = {Simultaneous measurement of the surface temperature and the release of atomic sodium from a burning black liquor droplet},
author = {Saw, Woei L and Nathan, Graham J and School of Mechanical Engineering, The University of Adelaide and Ashman, Peter J and Alwahabi, Zeyad T and School of Chemical Engineering, The University of Adelaide and Hupa, Mikko},
abstractNote = {Simultaneous measurement of the concentration of released atomic sodium, swelling, surface and internal temperature of a burning black liquor droplet under a fuel lean and rich condition has been demonstrated. Two-dimensional two-colour optical pyrometry was employed to determine the distribution of surface temperature and swelling of a burning black liquor droplet while planar laser-induced fluorescence (PLIF) was used to assess the temporal release of atomic sodium. The key findings of these studies are: (i) the concentration of atomic sodium released during the drying and devolatilisation stages was found to be correlated with the external surface area; and (ii) the insignificant presence of atomic sodium during the char consumption stage shows that sodium release is suppressed by the lower temperature and by the high CO{sub 2} content in and around the particle. (author)},
doi = {10.1016/J.COMBUSTFLAME.2009.12.016},
journal = {Combustion and Flame},
issn = {0010-2180},
number = 4,
volume = 157,
place = {United States},
year = {2010},
month = {4}
}