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ICESP IX CONFERENCE PAPER ABSTRACTS C 1-5 SERIES

Held in Kruger Gate, Mpumalanga, South Africa
May
May 17 - 21, 2004

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 C 1-5 Series papers from the IX ICESP Conference.  

C1  ALL-SOLID STATE PULSER DESIGN FOR A PULSED CORONA FLUE GAS POLLUTION MITIGATION SYSTEM
P.H. Swart, R.F. Uys,

Abstract
This paper reports on progress made with the design, construction and experimental evaluation of the pulser equipment on a Flue Gas pollution mitigation system, used for on-line testing and flue gas characterisation by Tswane  University  of  Technology  and  Eskom  Holdings.  A  separate  paper reports on the layout, use and the results achieved with the mobile facility on which this equipment is mounted.

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C2  LATEST DEVELOPMENTS OF THE PLASMA-ENHANCED ELECTROSTATIC PRECIPITATOR FOR MERCURY REMOVAL IN COAL-FIRED BOILER FLUE GAS
John L. Montgomery, Daniel M. Battleson, Clarence G. Whitworth, Isaac Ray, Wayne Buckley, James Reynolds & Ralph F. Altman

Abstract
The plasma-enhanced electrostatic precipitator (PEESP) is an innovative coal-fired boiler flue gas mercury removal system that combines existing electrostatic precipitator technology with low-energy plasma technology.  This new technology is energy efficient and produces very little secondary waste as compared to baseline absorbent mercury removal technologies.   In April 2002, MSE Technology Applications, Inc. (MSE), and Croll-Reynolds Clean Air Technologies (CRCAT)  were  awarded  a  joint  patent  on  the  PEESP  technology  based  on  bench-scale experimental work conducted by MSE in February 2000.   The original PEESP   bench-scale qualitative experiments performed at MSE during the summer of 2000 indicated high mercury removal efficiencies while treating a simulated coal-fired boiler gas stream containing  250 micrograms per dry standard cubic meter (µg/dscm) of elemental mercury.  Steam plus oxygen were used as the reagent gas while applying a constant negative high-voltage source to the electrode in a single-element reactor.   Bench-scale testing results were reported at AQ3 last. This paper will provide an update on laboratory scale testing in a multiple electrode tubular wet ESP.

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C3  From Electrostatic Precipitation to Corona Plasma System for Exhaust Gas CleaninG
K. Yan, G.J.J. Winands, S.A. Nair, E. J .M. van Heesch, and A.J.M.Pemen,

Abstract
This paper does not intend to review either electrostatic precipitation or corona plasma processing, but to discuss some critical issues when developing industrial streamer corona plasma systems for exhaust gas cleaning. Based on streamer generation and interaction between power sources and reactors, two energization methods, namely HPPS and DC/AC, were developed. The data available would be sufficient enough for commercial-scale design of a corona plasma system for DeNOx, DeSO2 and dust removal. We foresee that by retrofitting available ESP, a plasma based gas cleaning system to simultaneously remove polluting gases, heavy metals, and particles will be applied in the near future.
 
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C4  RESULTS OF THE INDIGO AGGLOMERATOR TESTING AT WATSON POWER STATION
Wallis Harrison Rodney TruceRobert Crynack

Abstract
The Bipolar Electrostatic Agglomeration process used in the Indigo Agglomerator attaches the fine particles, generally smaller than five microns, to the larger particles, generally larger than ten microns. The electrostatic precipitator does not collect dust in the 0.3 micron to 3 micron range efficiently.   By attaching these particles to large particles that are easily collected, the Indigo Agglomerator greatly reduces fine particle emissions from coal fired boilers.

This paper details the results of testing carried out by the Southern Company on a commercial installation  of  the  Indigo  Agglomerator  at  the  Watson  Power  Station  in  the  USA.  The precipitators’  performance  and  operation  were  evaluated  over  a  twelve  month  period  by comparing the two identical precipitators installed on Watson Unit  4. The only difference between A and B Precipitators is the installation of an Indigo Agglomerator in the B Precipitator inlet duct. This evaluation shows a major improvement in performance and operating condition on B Precipitator, due to reduced fine particles entering this precipitator. An in-situ Process
Metrix optical particle size measurement instrument was used to measure the change in particle size produced by the Indigo Agglomerator. These results confirm that the improved Opacity and mass emissions on B Precipitator are due to lower fine particle emissions caused by a reduction in fine particles at the precipitator inlet as a result of agglomeration in the Indigo Agglomerator.

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C5  MOBILE FACILITY FOR ON-LINE FLUE GAS CHARACTERISATION  
P.H. Swart, R. Strydom, J.M. van Dyk, K Dhaver-Young, M. Beeslaar, R Hansen

Abstract
Eskom  Holdings  and  Tswane  University  of  Technology  (TUT) initiated a research project for the mitigation of coal burning power station flue gas  pollutants.  It  was  decided  to  carry  out  pulsed  corona  flue  gas characterisation  on-line  in  this  project  on  a  side-stream  at  an  operating pulverised  fuel  burning  power  station.    In  this,  removal  energies  against removal percentages would be determined for NOx and SOx to furnish design information  for  an  all-solid  state  driven  pilot  De-NOx  and  De-SOx  pulsed corona unit.   A mobile laboratory unit was constructed for this purpose and has  been  used  to  evaluate  the  effectiveness  of  the  solid-state  pulser equipment and on the flue gas characterisation. This paper reports on the layout of the mobile facility and on the flue gas measurements.   A separate paper reports on the design, modelling and operation of the pulser equipment itself.

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