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Desulfurization kinetics of coal combustion gases

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Desulfurization kinetics of coal combustion gases

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Título Desulfurization kinetics of coal combustion gases
Autor Braganca, Saulo Roca
Jablonski, Andre
Castellan, Jorge Luiz
Abstract Desulfurization of the gases from coal combustion was studied, using limestone (marble) as the sorbent in a fluidized-bed reactor. The kinetic parameter, k, was measured by analyzing the reduction in SO2 emissions in relation to time when a batch of limestone was introduced directly into the combustor chamber. The influence of sorbent composition and particle size was also studied. The CaO content in the limestone was more important than the MgO content. Sorbent particle size showed a strong influence on the reaction time and efficiency of desulfurization. The results of this work prove that marble type is very important in the choice of sorbent for a desulfurization process. A magnesian limestone showed a better performance than a dolomite. Therefore, the magnesian limestone is more efficient for a shorter particle residence time, which is characteristic of the bubbling fluidized bed.
Contido em Brazilian journal of chemical engineering. São Paulo, SP. Vol. 20, n. 2 (2003), p. 161-169
Assunto Combustão do carvão
Combustão em leito fluidizado
Dessulfurização
[en] Coal
[en] Desulfurization kinetics
[en] Fluidized bed
[en] Limestone
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/75860
Arquivos Descrição Formato
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