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Type: Journal article
Title: Simultaneous measurements of the release of atomic sodium, particle diameter and particle temperature for a single burning coal particle
Author: van Eyk, P.
Ashman, P.
Alwahabi, Z.
Nathan, G.
Citation: Proceedings of the Combustion Institute, 2009; 32(Part 2):2099-2106
Publisher: The Combustion Institute
Issue Date: 2009
ISSN: 1540-7489
Statement of
P.J. van Eyk, P.J. Ashman, Z.T. Alwahabi and G.J. Nathan
Abstract: The temporal history of the release of volatile alkali species during coal combustion is a significant, but poorly understood factor in the fouling and corrosion of heat transfer surfaces within industrial coal-fired boilers. We present new results of the simultaneous measurement of particle temperature, particle size and the atomic sodium concentration in the plume of a burning coal particle. During the char phase, the sodium concentration in the plume was found to be linearly dependent on the inverse of particle diameter, but during the ash phase the sodium concentration was found to decay exponentially with decreasing particle temperature. The centreline decay of Na within the plume above the burning particle consists of one region controlled by a first order chemical reaction and a second region controlled by diffusion
Description: Copyright © 2009 Elsevier B.V. All rights reserved
RMID: 0020090500
DOI: 10.1016/j.proci.2008.07.038
Appears in Collections:Chemical Engineering publications
Environment Institute Leaders publications
Environment Institute publications

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