摘要
为防止电除尘器发生反电晕问题并提高除尘效率,在末电场采用双区电场结构,将粉尘荷电、收尘的过程及其电源供电设备分开,使两个区域的电气运行参数分别达到最佳化。通过两台样机进行对比性除尘效率试验表明,与传统卧式电除尘器相比,双区电场可使粉尘平均驱进速度提高20%左右;除尘效率则随之上升,并将粉尘排放浓度降低到50mg/DNm3以下。
To prevent back corona and improve the dust cleaning efficiency, the last electrical field is divided into several different ionization and collection zones. They use respective power supplies for charging and dust collecting to optimize the electric operation of each section. While dust ash resistance ：〉1 ×10^11 O·cm, the input vohage of collecting area is higher about 30kV than charging area and the nearby field. The collecting area is of low current and uniform distribution of plate current density. Compared with traditional horizontal-type ESP, industrial test result shows that using technology of Double Fields ESP can enhance the rate of fine particle removal about 20% , lead to increase the dust cleaning efficiency and keep the emission of boiler below 50mg/DNm^3.
出处
《装备制造技术》
2008年第4期29-31,共3页
Equipment Manufacturing Technology
关键词
电除尘器
双区电场
粉尘驱进速度
反电晕
除尘效率
ESP
Double Fields
Rate of fine particle removal
Back corona
Dust cleaning efficiency
