The method for evaluating electric precipitator (EP) performance in coalfiring power plants

as well as valuefetching principle and range of main parameters in design have been presented

pointing out problems needing attention in design of main parts

such as gas flow distribution

as well as rapping and ashcleaning system

and giving concrete requirements and indices. The principle of selecting the secondary voltage and current of highvoltage silicon rectifying power supply

as well as basic requirements for thermal insulation have also been given.