High-voltage power supply is the core component of electrostatic precipitator. This paper conducted a pilot test on the spur line-plate single-chamber wet electrostatic precipitator test platform

using an electrostatic lowpressure impactor(ELPI) to measure the charge of different particle sizes and its particle size-concentration distribution in real time. The test parameters such as the dust removal efficiency

particle charge characteristics

VI characteristics

power consumption of the two types of power supply were compared. The test results showed that

the maximum average voltage of the output of the constant voltage source was higher than that of the constant current source without excessive spark breakdown

70 kV and 55 kV respectively

and the corona current was 7.12 mA and 6.00 mA respectively

and the corresponding maximum dust removal efficiency were 85.9% and 84.2%

respectively. Compared with constant current source

the constant voltage source can save energy by 20%. Therefore

the constant voltage source has more advantages in technology and economy than the constant current source. The relevant conclusions have important reference value for the upgrading of electrostatic precipitators.