METHOD FOR REMOVING DUST FROM ELECTROSTATIC PRECIPITATOR FOR AUTOMOBILE-ROAD TUNNEL

摘要

PURPOSE:To timely clean an electrostatic precipitator and to increase its operation efficiency by judging if the amt. of dust depositing on the dust collecting electrode exceeds a critical value from the fact that the efficiency in collecting the dust having more than a specified particle size is extremely decreased. CONSTITUTION:The air A cleaned by a electrostatic precipitator is sucked by a dust suction port 23, the number of particles having different diameters is respectively measured by a particle counter 22, and the time when the efficiency in collecting the dust having =1mum particle diameter, for example, is extremely decreased is detected and judged as the time to remove the dust depositing on the collecting electrode. Namely, when the amt. of the dust depositing on the collecting electrode exceeds a critical value, the rescattered fine particles having =1mum diameter are aggregated, and the apparent density of the particles is increased at the outlet of the precipitator. The time is judged from the fact. Consequently, the dust on the collecting electrode is timely removed, the precipitator is timely cleaned, and the operation efficiency is increased.