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Held in Kyongju, Korea
September 20-25. 1998

The International Conference on Electrostatic Precipitation (ICESP) is the official conference of the International Society for Electrostatic Precipitation (ISESP).  

The following is a list of the Abstracts for the OU-2 Series papers from the VII ICESP Conference.  

OU06  Research and Use of Electrostatic Precipitator with Steel-Wire Brush

No Abstract Available
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OU07  New Technology Improves Electrostatic Precipitator Performance
Rodney J Truce and Wade Reibelt
Baltec Systems Pty Ltd

Legislative requirements for reducing dust emissions from industrial processes, such as smelters, refineries, kilns and boilers, have resulted in significant capital costs.  Many of these processes use Electrostatic Precipitators to control the dust emissions to the environment.  Operating problems can cause reduced electrostatic precipitators performance resulting in high dust emissions.  Baltec Systems has developed a range of technologies which can be selected, depending upon the application, to minimize the effect of operational problems and to improve the performance to meet reduced emission requirements. These technologies include gas conditioning using SO3 or humidification, inlet burden control using mechanical pre-collectors, mechanical enhancements to improve gas flow and cleaning, and enhanced electrical systems using the latest technology in energization systems and high performance electrodes.

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OU08  Industrial-Scale Study of a Retrofitted Electrostatic Precipitator
Maria Jedrusik
Technical University of Wroclaw
Institute of Heat Engineering and Fluid Mechanics
Jan Jedrusik
Thermal-Electric Power Plant
Marian Sarna
Electrostatic Precipitator Factory ELWO

Investigated was a retrofitted horizontal, three-zone electrostatic precipitator, which was designed in the late 1970s.  the precipitator was installed after a bituminous-coal fired 140 MW boiler.  Prior to retrofit, the precipitator had spiked band corona electrodes which were to provide a firm efficiency of 95%.  To make it comply with the enforced environmental standards it was necessary to increase this value. The retrofit consisted of replacing the spiked band corona electrode with a barbed-tube unit of a special design, which raised the efficiency of the precipitator to 99%, thus providing a dust concentration of 75 mg/m3 in the flue gas.  These values were achieved without introducing additional zones.  Prior to dust concentration measurements, we determined the distribution of gas velocity at the inlet of an industrial precipitator.  The efficiency of the precipitator was measured for various heating power of the boiler to illustrate the improvement obtained.

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OU09  Some Investigations on ESP Unit : Determination and Improvement of Collection Efficiency
Avinash Chandra
Centre fo Energy Studies
Indian Institute of Technology

Investigations have been carried on an old ESP unit associated with a thermal plant to improve existing particle collection efficiency.  The thermal plant uses typical Indian coal having low calorific value and high ash contents (-40%).  The resistivity of fly ash is very high because of low sulpher contents.  Back corona effects have been suppressed by incorporating microprocessor based intermittent charging and rapping systems.  The effective migration velocities and as a consequence collection efficiencies can be improved by choosing appropriate value of intermittent charging time, magnitude and rapping rates.

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OU10  Recent Application of Moving-Electrode Type Electrostatic Precipitator
Toshiaki Misaka, Akio Akasaka, Hiroaki Yabuta
Hitachi Plant Engineering
& Construction ce., Ltd.
Tadashi Oura, Mitsugu Hirano, Minoru Yamazaki, Hiroshi Asano
Hitachi Plant KIDEN Engineering Co., Ltd.

This paper describes the recent applications of the electrode type ESPs for fly ashes from pulverized coal fired utility boilers and for sintering machine dust from iron making factories in Japan .

In case of a 1,000MW coal fired power station, a moving electrode type ESP was installed between a gas-gas heat exchanger and a wet type desulfurizer at gas temperature of 90oC.  The test results showed that the reentrained dust from collecting plates was significantly decreased, resulting in the outlet dust concentration of less than 10mg/m3N.

For sintering machine exhaust gas treatment, a pulse charging system was applied to the fixed electrode section prior to the moving electrode section of ESP to attain higher collection efficiency for high resistivity dust.  This combined system achieved an outlet dust concentration of less than 10mg/m3N with a gas flow rate of 480,000m3N/h

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Last updated: January 16, 2010.
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