电除尘器在超低排放下的系统运行优化  

System Operations Optimization of Electrostatic Precipitation for Ultra-low Emission

作　　者：张滨渭[1] 李树然[2] 

机构地区：[1]西安热工研究院有限公司,西安710032 [2]浙江大学化学工程与生物工程学院工业生态与环境研究所,杭州310028

出　　处：《高电压技术》2017年第2期493-498,共6页High Voltage Engineering

摘　　要：超低排放下电除尘器面临的问题众多,需要通过低低温电除尘器、高压电源选型和经济性评估进行优化。低低温电除尘器是指烟气温度降至酸露点附近运行的电除尘器,当电除尘器温度由120~150℃降至80~110℃时,出口排放质量浓度可下降20%~40%。为电除尘器运行供电的有高频电源、三相电源和脉冲电源3种,工程测试证明三相电源适合高粉尘负荷,高频电源在匹配良好条件下可实现较好的提效效果,而脉冲电源需更多地针对细颗粒物和高比电阻粉尘进行研究。同时电除尘器应在运行条件、电源选型等优化且满足排放要求的前提下,应通过运行优化调整试验及系统优化控制,合理降低运行电耗。The numerous problems under ultra-low emission should be solved through the optimization of colder-side electrostatic precipitator （ESP）, high-voltage power source selection, and capital assessment. The colder-side ESP operates at temperature near the acid dewpoint, and 20%-40% of the emission at ESP outlet can be reduced when the operating temperature decreases from 120-150℃ to 80-110℃. High-frequency power source, three-phase power source, and pulse power source are the three main power supplies for ESP. Engineering tests show that the three-phase power source can better cope with high dust load, high-frequency power source can improve the operating performances under good matching conditions, and pulse power source still needs more researches on its application of fine particle and high resistivity dust control. Meanwhile, based on operation optimization and power source selection without sacrificing dust emissions, the electrical power consumption of ESPs should be reduced by integration of system commissioning and controlling optimization on the premise of reaching ultra-low emission.

关 键 词：低低温电除尘器 高频电源 三相电源 脉冲电源 比电耗 超低排放 

分 类 号：X701.2[环境科学与工程—环境工程]