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Modeling of particle size distribution of limestone in sulfur capture in air and oxy-fuel circulating fluidized bed combustion

Authors Saastamoinen J, Tourunen A, Leino T, Pikkarainen T

Received 22 December 2015

Accepted for publication 2 March 2016

Published 10 August 2016 Volume 2016:4 Pages 41—52


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Editor who approved publication: Dr Adolfo Perujo

Jaakko Saastamoinen,1 Antti Tourunen,2 Timo Leino,1 Toni Pikkarainen,1

1VTT Technical Research Centre of Finland Ltd, Jyväskylä, 2Reteres Oy, Äijälä, Finland

Abstract: Measurements for partition of Ca-containing compounds in particles in air and oxy-fuel combustion are presented. A model for steady and unsteady state particle size distribution (PSD) of limestone including the effects of PSD of the feed, attrition, fly ash, and bottom ash removal is presented. By incorporating models for sulfation, a new model for distribution of Ca-containing compounds CaCO3, CaO, and CaSO4 in different particle sizes during sulfation is found. The model can be applied to study the effects of different factors on the PSD of limestone in the bed, to optimize the PSD in the bed, and to study reasons for the measured PSDs and distributions of Ca-containing compounds in different size fractions in the bed in sulfur capture in circulating fluidized bed combustion in air and oxy-fuel conditions.

Keywords: limestone, sulfur capture, circulating fluidized bed, population balance modeling, oxy-fuel

Creative Commons License This work is published by Dove Medical Press Limited, and licensed under a Creative Commons Attribution License. The full terms of the License are available at The license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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