摘要
在自主研制的电袋复合除尘器实验台上研究了工作电压、气流温度和入口粉尘质量浓度对除尘性能的影响,探讨了除尘效率和被捕集粉尘粒径范围等的变化规律.结果表明:工作电压增大时,总除尘效率提高;气流温度超过130℃时,总除尘效率明显降低;入口粉尘质量浓度增大到14.7g/m3以上时,静电除尘区除尘效率大幅下降;静电除尘区主要除去10μm以上粒径粉尘,而布袋除尘区除尘范围偏向10μm以下的细小颗粒;在实际运行过程中,适当提高工作电压以及降低烟气温度和入口粉尘质量浓度,将有助于提高除尘效率和PM2.5的捕集率.
The effects of voltage,flue gas temperature and inlet concentration on dust removal efficiency of an electrostatic-fabric integrated precipitator were studied using self-developed experimental facilities,so as to analyze the change rule of the dust removal efficiency and the size distribution of trapped particles.Results show that the total removal efficiency increases with rising working voltage,which reduces obviously when the flue gas temperature is higher than 130℃;the removal efficiency of electrostatic precipitator reduces greatly when the inlet dust concentration gets up to 14.7g/m3;particles larger than PM10 are mainly collected by electrostatic precipitator,while those smaller than PM10 are removed by bag filter.In actual operation process,both the total dust removal efficiency and PM2.5capture rate may be improved by appropriately raising the working voltage and reducing the inlet dust concentration.
出处
《动力工程学报》
CAS
CSCD
北大核心
2014年第7期534-540,共7页
Journal of Chinese Society of Power Engineering
基金
中国南方电网公司科技研发重点资助项目(K-GD2012-365)
关键词
电袋复合除尘器
除尘效率
细微颗粒物
粒径
electrostatic-fabric integrated precipitator
dust removal efficiency
PM2.5
size distribution
