FBC desulfurization process using coal with low sulfur content, high oxidizing conditions and metamorphic limestones

AUTOR(ES)

Braganca, Saulo Roca

DATA DE PUBLICAÇÃO

2011

RESUMO

A metamorphic limestone and a dolomite were employed as SO2 sorbents in the desulfurization of gas from coal combustion. The tests were performed in a fluidized bed reactor on a bench and pilot scale. Several parameters such as bed temperature, sorbent type, and sorbent particle size at different Ca/S molar ratios were analyzed. These parameters were evaluated for the combustion of coal with low-sulfur/high-ash content, experimental conditions of high air excess and high O2 level in fluidization air. Under these conditions, typical of furnaces, few published data can be found. In this work, a medium level of desulfurization efficiency (~60%) for Ca/S = 2 was obtained.

ASSUNTO(S)

dessulfuração : combustão : carvão desulfurization low so2 concentration coal metamorphic limestone fluidized bed combustor

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