新型高效电除尘器在烟气超低排放中的应用
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摘要
在传统湿式电除尘器的基础上通过对其电源、电极材质、电极构造等方面进行优化改造,提出一种基于脉冲电源的新型高效湿式电除尘器(电除雾器)。将基压叠加脉冲电压集成的高压电源及不锈钢材质的管针芒刺放电极应用于湿式电除尘器中,有效提高电除尘器的峰值电压、电晕功率而不产生闪络,优化放电性能,提高粉尘的荷电率与驱进速度,解决电晕闭塞问题,从而显著提高除尘效率。经工业应用验证,新型高效电除尘器能够有效控制烟气氨法脱硫末端的气溶胶污染,实现烟尘的超低排放。
Through optimizing the power supply,electrode material and electrode structure of traditional wet electrostatic precipitator( WESP),this research proposed a new high efficiency wet electrostatic precipitator based on pulse power. The high voltage power supply integrated by superposing pulse voltage on basic voltage and the discharge electrode made from stainless steel were utilized in this electrostatic precipitator. They could effectively improve the voltage peak and corona power without producing flashover,optimize the discharge performance,increase the chargeability and migration velocity of dust,as well as solve the problem of corona blocking,thus significantly improved the dedusting efficiency of electrostatic precipitator.The industrial operation verified that the new high efficiency WESP can effectively control the aerosol pollution from exhausts of ammonia desulphurization,realize the ultra-low flue gas emission.
Through optimizing the power supply,electrode material and electrode structure of traditional wet electrostatic precipitator( WESP),this research proposed a new high efficiency wet electrostatic precipitator based on pulse power. The high voltage power supply integrated by superposing pulse voltage on basic voltage and the discharge electrode made from stainless steel were utilized in this electrostatic precipitator. They could effectively improve the voltage peak and corona power without producing flashover,optimize the discharge performance,increase the chargeability and migration velocity of dust,as well as solve the problem of corona blocking,thus significantly improved the dedusting efficiency of electrostatic precipitator.The industrial operation verified that the new high efficiency WESP can effectively control the aerosol pollution from exhausts of ammonia desulphurization,realize the ultra-low flue gas emission.
引文
[1]胡志光,李丽,徐劲.新排放标准下燃煤电厂湿式电除尘器应用分析[J].电力科学与工程,2016,32(8):70-74.
[2]胡小吐.氨法烟气脱硫湿式电除尘技术的工业应用[J].环境工程,2015,33(2):80-83.
[3]黎在时.电除尘器的选型安装与运行管理[M].北京:中国电力出版社,2015.
[4]朱翔.用于电除尘器的直流叠加高脉冲电源的研究[D].北京:北京交通大学,2011.
[5]H J怀特.工业电收尘[M].王成汉,译.北京:冶金工业出版社,1984.
[6]任燕,孔春林,刘杰,等.脉冲增强及移动电极技术在火电厂除尘改造中的应用[J].节能与环保,2016,49(9):181-184.
[7]Li L,Chen D.Performance study of a DC-corona-based particle charger for conditioning[J].Journal of Aerosol Science,2011,42(2):87-99.
[8]郝吉明,贺克斌,晁红勋.电除尘器电场分布特性的模拟计算[J].环境科学学报,1988,8(4):480-486.
[9]汪颖.喷射放电极静电除尘器的收尘机理及研发[D].武汉:武汉科技大学,2009.
[10]李济吾,李世远.收尘区脉冲供电对电除尘器收集性能的影响[J].环境工程学报,2011,5(2):399-403.
[11]王克亮,段炼,徐燕小,等.静电除尘器电极技术研究进展[J].环境与可持续发展,2015(6):149-154.
[12]刘昊.湿式电除尘器在细颗粒物控制中的应用[J].工业安全与环保,2016,42(4):20-22.
[2]胡小吐.氨法烟气脱硫湿式电除尘技术的工业应用[J].环境工程,2015,33(2):80-83.
[3]黎在时.电除尘器的选型安装与运行管理[M].北京:中国电力出版社,2015.
[4]朱翔.用于电除尘器的直流叠加高脉冲电源的研究[D].北京:北京交通大学,2011.
[5]H J怀特.工业电收尘[M].王成汉,译.北京:冶金工业出版社,1984.
[6]任燕,孔春林,刘杰,等.脉冲增强及移动电极技术在火电厂除尘改造中的应用[J].节能与环保,2016,49(9):181-184.
[7]Li L,Chen D.Performance study of a DC-corona-based particle charger for conditioning[J].Journal of Aerosol Science,2011,42(2):87-99.
[8]郝吉明,贺克斌,晁红勋.电除尘器电场分布特性的模拟计算[J].环境科学学报,1988,8(4):480-486.
[9]汪颖.喷射放电极静电除尘器的收尘机理及研发[D].武汉:武汉科技大学,2009.
[10]李济吾,李世远.收尘区脉冲供电对电除尘器收集性能的影响[J].环境工程学报,2011,5(2):399-403.
[11]王克亮,段炼,徐燕小,等.静电除尘器电极技术研究进展[J].环境与可持续发展,2015(6):149-154.
[12]刘昊.湿式电除尘器在细颗粒物控制中的应用[J].工业安全与环保,2016,42(4):20-22.