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无电晕静电除尘技术在CFB锅炉上的应用研究 被引量:2

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摘要 为了提高大型CFB锅炉飞灰中20~70μm段细颗粒的分离效率,将其返回炉膛继续燃烧以提高锅炉的燃烧效率,通过设计1台小型无电晕静电除尘器,将其连接到旋风分离器出口处,并在1台小型的CFB锅炉上进行试验,对其分离性能进行研究。研究结果表明:静电除尘器分离效率随发射极温度、发射极电压、收尘极电压增加而增加;当发射极温度在850℃、发射极电压为4 000 V、收尘极电压为12 000 V时,静电除尘器分离效率达到95%;当发射极温度大于850℃、发射极电压大于4 000 V、收尘极电压大于8 000 V时,对20μm以上的细颗粒可以达到100%分离效率,烟气中20~70μm细颗粒可以被完全捕捉;静电除尘器的压降随烟气流速增加而增加,静电除尘器压降损失小于200 Pa。
出处 《能源技术与管理》 2013年第1期117-120,137,共5页 Energy Technology and Management
基金 江苏省科技支撑计划(BE2010185)
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