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A Study of Fly Ash Resistivity Characteristics Generated from the Coal Fired Power Plant as a Function of Water Concentration and Temperature
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 Title & Authors
A Study of Fly Ash Resistivity Characteristics Generated from the Coal Fired Power Plant as a Function of Water Concentration and Temperature
Ku, Jae-Hyun; Lee, Jung-Eun; Lee, Jae-Keun;
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 Abstract
Recent studies have been directed toward obtaining a better understanding of the application of electrostatic precipitators to collect fly ash particles produced in a coal-fired power plant. Electrical resistivity can be described as the resistance of the collected dust layer to the flow of electrical current and is an important property for the collection efficiency in the electrostatic precipitator. In this paper, fly ash resistivity as a function of temperature up to has been experimentally investigated using the resistivity meter consisted of the movable electrode, dust cup, and furnace. Resistivity was found to increase with increased temperature up to due to the reduction of water concentration and then gradually decrease with increased temperature due to the activation of electrons. As the resistivity of fly ash in the flue gas temperature of was measured > ohm cm, the efficiency of fly ash removal in the electrostatic precipitator might be expected to be low due to back-corona phenomenon. Flue gas conditioning in the electrostatic precipitator to reduce the resistivity of fly ash as required.
 Keywords
Fly Ash;Resistivity;Electrostatic Precipitator;Temperature;Water Concentration;
 Language
Korean
 Cited by
1.
석탄회 미연탄소함량 동시측정을 위한 석탄회 정전용량 분석에 관한 연구,이재근;김장우;구재현;신진혁;김성찬;신희수;황유진;

에너지공학, 2002. vol.11. 1, pp.67-73
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