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OALib Journal期刊
ISSN: 2333-9721
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流化床o2/co2气氛下添加石灰石对燃煤pm2.5的控制
, PP. 1020-1024
Keywords: o2/co2,煤燃烧,pm2.5,流化床,石灰石
Abstract:
？采用小型流化床研究了在o2/co2气氛下添加石灰石对pm2.5(空气动力学直径小于2.5μm的颗粒物)的控制.实验采用荷电低压撞击器(elpi)采集和分析燃烧后的pm2.5.结果表明,添加石灰石是燃烧过程中影响pm2.5生成的重要因素.添加石灰石后,生成pm1.0的数量浓度均降低,而pm1.0~2.5的数量浓度均略有增加;pm2.5质量粒径分布均呈双峰分布,峰值分别出现在0.2和2.0μm左右.随着ca/s物质的量比的增加,pm2.5中si、na、k、s和cu的含量呈减少的趋势;随着颗粒粒径的减小,s、cu、k和na的含量有增大的趋势,而si的含量有减少的趋势.
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