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ICESP X CONFERENCE PAPER ABSTRACTS 6B SERIES

Held in Cairns, Australia
June 25 - 29, 2006

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 6B Series papers from the X ICESP Conference.  

6B1
THE TECHNOLOGY DEVELOPMENT OF THE COEBP

HUANG WEI, LIN HONG, ZHENG KUIZHAO, WU JIANGHUA AND QUE CHANGXING

Abstract

COEBP stands for Compact Electrostatic Baghouse Precipitator. This document tells about the principle of the COEBP and technology development in its application in power industry. This new dedusting method combines the dust-collecting advantages of traditional dedusting – electrostatic and baghouse dedusting. A large quantity of mill dust is first collected by pre-electrostatic field, and then fine mill dust is collected via backstage baghouse dedusting, and hence, realizing the conception of organic combination of electrostatic and baghouse dedusting. It is important originality and a technology development in dedusting principle and method.


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6B2 
DISCOVERY OF THE POWER-SAVING PRINCIPLE OF
ELECTROSTATIC DUST PRECIPITATION USING DC SUPPLY
ZHAO FU, YU WENHAI, WANG MEIJU AND HE JIAN

Abstract

This article proves that electrostatic precipitators using DC power supply can save much more electrical energy than those using rectified AC power supply. The discovery of the mechanism of this energy-saving phenomenon lays a theoretical foundation for the use of DC power supply in electrostatic precipitation and greatly promotes a large-scale energy-saving movement in this field.


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6B3 
NOVEL ESP MODEL FOR IMPULSE ENERGISATION
T. IVÁNCSY, J.M. SUDA, I. KISS1 AND I. BERTA

Abstract

Recently more and more electrostatic precipitator has been upgraded, replacing the traditional DC power supply with impulse energisation. Different types of supply voltage were applied to obtain current impulses for reducing back corona, earning energy saving and better efficiency of precipitation.

For the evaluation of the effect of impulse energisation, several numerical models were made using different computational methods. A large number of models calculate ion space charge density distribution assuming continuous ionic current between high voltage and grounded electrodes. This assumption can lead to incorrect result when the “travelling time” of the ions and the time period of the supply voltage (duration of the current impulses and “current free” periods) are in the same range.

Our new model for the ion space charge density calculation takes into consideration the rapid, time dependent processes providing more reliable results for the evaluation of the precipitation process. By the help of the new model a detailed analysis of different supply modes can be carried out, to obtain the best possible operation of a given electrostatic precipitator.


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6B4 
THE RECTANGULAR CONTROLLING PRINCIPLE AND METHOD
OF AUTOMATIC FOLLOWING CONTROL ON DUST DENSITY IN ELECTROSTATIC DUST PRECIPITATION
ZHAO FU, HE JIAN, YU WENHAI AND WANG MEIJU

Abstract

This article describes the principle and method of automatic following control on dust density in electrostatic dust precipitation (ESP) that is based on the changing law of dust density in ESP electric field and uses automatic adjustment of output voltage. Rectangular load characteristics for high- voltage power supply source is formed on which the work point located in the vertical line. When dust density changes the work point will timely rises or falls along the vertical line. Experience shows that this method is very simple, efficient and energy saving though there is no special on- line monitoring and control measures used on dust density.


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