Abstract: Abstract:The electrostatic precipitator of units No.1 and No.2 of Zhuhai Power Station of Guangdong Yudean Group Corporation Limited was put into operation for more than a decade. According to the results of performance diagnostic test, under the present coal supply, the dedusting efficiency of the precipitator can not reach original designed value. In order to meet the requirement of the file GB 13223—2011 “Emission standard of air pollutants for thermal power plants”, the electrostatic precipitator was reformed into electrostaticbag compound dust collector. After the reformation, the mass concentration of the emitted smoke dust was reduced obviously, and the dedusting efficiency was raised significantly.

Key words: Keywords:electrostatic precipitator, electrostaticbag compound dust collector, reformation, operation adjustment