Ozone generation in an electrostatic precipitator with a heated corona wire

Journal Article · Tue Apr 01 04:00:00 EDT 1975 · J. Air Pollut. Control Assoc.; (United States)

DOI:https://doi.org/10.1080/00022470.1975.10470092· OSTI ID:7248660

Awad, M B; Castle, G S.P.

A method that gives as much as 85 percent reduction in the ozone generation per unit corona current for a given corona wire is described. The electrical parameters governing the formation of O/sub 3/ in an electrical discharge are summarized. It is shown that a reduction in the average gas density in the ionized sheath of a corona discharge should lead to lower O/sub 3/ generation. Experiments were carried out with an a.c. heating current being used to heat a corona wire in a cylindrical geometry corona section. It was found that as the heating power applied to the wire increased, the O/sub 3/ generation per unit corona current decreased for both positive and negative corona. An experimental formula was obtained that relates the heating power to the O/sub 3/ generation with and without heating for positive corona. This formula was based upon experimental work carried out on corona wires of different materials and sizes and at flow conditions typical of two-stage electrostatic precipitators. The reduction in the O/sub 3/ concentration is believed to be caused primarily by the reduced corona power dissipated in the ionized sheath under heating conditions. These results have great practical importance for improving the performance of the two-stage type electrostatic precipitator as it allows the corona current and hence charging efficiency of the unit to be increased without exceeding the O/sub 3/ limits.

• Research Organization: Univ. of Western Ontario, London
• OSTI ID: 7248660
• Journal Information: J. Air Pollut. Control Assoc.; (United States), Journal Name: J. Air Pollut. Control Assoc.; (United States) Vol. 25:4; ISSN JPCAA
• Country of Publication: United States
• Language: English

Related Subjects

440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
CORONA DISCHARGES
ELECTRIC DISCHARGES
ELECTROSTATIC PRECIPITATORS
ENVIRONMENTAL EFFECTS
EQUATIONS
EQUIPMENT
OZONE
PERFORMANCE
POLLUTION
POLLUTION CONTROL EQUIPMENT
PRODUCTION