In order to meet the requirement for environmental protection and guarantee the safe operation of sweetener

the electric precipitator of the No.2 boiler in Datang Luohe Power Plant was modified

where the shell of the original electric precipitator remained

an electric precipitator was still adopted in the first electric field

while baghose precipitators were used in the second

third and fourth electric fields.This paper introduces the modification scheme for substituting the combined electric and baghose precipitators for only electric precipitaors

devices distribution

and the control system.The combined system possesses such advantages as higher efficiency of dust removal

energy saving

stable operation

and online maintenance by using the high-frequency switching power supply.