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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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300mw燃煤电站砷、汞排放特征研究
, PP. 839-844
Keywords: 砷,汞,排放,烟气,飞灰
Abstract:
？对某300mw燃煤电站煤、底灰和静电除尘器(esp)飞灰进行采样并测定了其中的砷、汞含量,同时应用ontariohydromethod(ohm)标准方法和设备对esp前后烟气中的砷、汞分布进行了直接采样和测试.对砷的检测结果表明,esp飞灰中砷含量约6.68×10-6,是原煤中砷含量的2.5倍左右,而底灰中砷含量仅为1.70×10-6,esp前烟气中砷含量约153.27μg/m3,esp后砷含量急剧降低为41.13μg/m3;对汞的检测结果表明,原煤中汞含量约2.5×10-7,飞灰、底灰中的汞含量分别约1.9×10-7、1.5×10-7;esp前后烟气中总汞含量分别为5.49、5.21μg/m3.砷在飞灰中明显富集,而汞在飞灰和底渣中均不具有富集效果.esp单元具有明显的协同脱砷效果,平均脱除率约在71%左右,而对汞的协同脱除效果不明显.
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