Title :
Pulse power energization effects on ESP efficiency in collection of high resistivity flyash particles
Author :
Jayaram, S. ; Chang, J.S. ; Berezin, A.A. ; Looy, P. ; Castle, G.S.P. ; Mangal, R. ; Mozes, M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
Abstract :
A novel pulse module for enhancing electrostatic precipitator (ESP) performance has been developed and tested using Ontario Hydro´s 640 MJ/h Combustion Research Facility. The pulse energization enhanced the performance of the existing DC energized wire-plate ESP by suppressing back corona in collecting high-resistivity flyash (⩾10 10 Ω-cm). A 26% improvement in particle collection efficiency and a 30% energy saving were obtained with pulse energization in collecting high-resistivity, high-sulfur (3.7%) Nova Scotia coal flyash injected with limestone-water slurry as sorbent. The cold precharger specially designed for the three-stage wire-plate ESP has been tested for its ability to improve the ESP´s performance in reducing the back corona. With an additional 30% energy supplied to the precharger it was possible to obtain up to a 40% enhancement in collection efficiency
Keywords :
corona; electrostatic precipitators; DC energized wire-plate ESP; Nova Scotia coal flyash; Ontario Hydro Combustion Research Facility; back corona suppression; cold precharger; electrostatic precipitator; energy saving; high resistivity flyash particles; limestone-water slurry; particle collection efficiency; pulse module; pulse power energisation; sorbent; Conductivity; Corona; Current density; Electric breakdown; Electrostatic precipitators; Ionization; Pulse transformers; Pulsed power supplies; Testing; Voltage;
Conference_Titel :
Industry Applications Society Annual Meeting, 1993., Conference Record of the 1993 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-1462-X
DOI :
10.1109/IAS.1993.299110
