Experimental study on the Charging of Particle

摘要

China's energy structure determines that the pattern of using coal as the main form of energy will not change in the long term, how to reduce particulate emissions is an urgent problem to solve. This paper builds an experimental system that can measure the average particle charge, and examines the effects of discharge form, electrode spacing, wire-plate spacing, and particle type on the particle charge. The results show that close electrode spacing decreases the charge and has a limited effect on the particle charge at longer distances; At the same electric field intensity, the charge is higher at long pitch high voltages than at narrow pitch low voltages; Particles with different resistivities have approximately the same charge under the same experimental conditions; For particles smaller than 0.1 μm, the charge in the form of pulse and DC discharge can reach about 4 times that in the form of single discharge.