Low SO2 emission from CFB co-firing

Low SO2 emission from CFB co-firing MSW and bituminous

Abstract： Influence of co-firing rate on SO2 emission from co-firing municipal solid waste(MSW) and bituminous containing high amount of sulfur(1.79%) was studied in a 0.15 MWt circulating fluidized bed(CFB). The temperature selected is 1123 K, typical for MSW incineration using CFB. The particle concentration in the dilution zone of the furnace, the alkali metal concentration and sulfate concentration in the recirculating ash and fly ash, and flue gas composition were determined. The results showed that the addition of MSW leads to a significant decrease in SO2 emission. Concentration of SO2 in flue gas decreased to 0 with the co-firing rate greater than 51%. This reduction in SO2 emission is attributed both to the high particle concentration in the dilution zone of the furnace, the high content of alkali metals in the bed material, and to the comparatively high concentration of HCl in flue gas during co-firing of MSW and bituminous. 作 者： LU Qing-Gang    LI Zhi-wei    NA Yong-Jie    BAO Shao-lin    SUN Yun-kai    HE Jun   作者单位： Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100080,China  期 刊： 环境科学学报（英文版）  ISTICSCI   Journal： JOURNAL OF ENVIRONMENTAL SCIENCES  年，卷(期)： 2004, 16(5)  分类号： X75  Keywords： co-firing    municipal solid waste    bituminous    CFB    SO2   

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