The energy saving potential and control method of electrostatic precipitator(ESP) are discussed and the main cause of over energy expenditure what is back corona and re-entrainment is pointed out.

• 就电除尘器的节能.；力、控制方法进行了讨论；指出了二次扬尘和反电晕是造成电除尘器能耗过大的主要原因。