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

Brazilian Journal of Chemical Engineering

S. R. Bragança²  J. L. Castellan¹ 

[1] ,Federal University of Rio Grande do SulPorto Alegre RS ,Brazil

关键词: Desulfurization;    Low SO2 concentration;    Coal;    Metamorphic limestone;    Fluidized bed combustor;   

DOI  :  10.1590/S0104-66322009000200015

来源: SciELO

【 摘 要 】

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.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License