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KL01 What’s
New of China ESP
Wang Liqian
Nanjing Electric Power Environmental Protection Science Research
Institute
Abstract
Some
new progresses of
China
’s ESP researches and industries are briefly described, such as:
year output and its distribution, the so-called lentoid ESP, roof
ESP, ESP simulating installation and apparatus, LC constant current
power source, etc.
Finally, the research of impact on fly ash conductivity by
iron and carbon content is also mentioned.
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KL02 Japanese
State-of the-Art for Non-thermal Plasma
Tetsuji Oda
Department of Electrical Engineering, The University of Tokyo
Abstract
Present
research status on atmospheric pressure non-thermal plasma
application for environmental control in
Japan
will be reviewed.
DeNOx and DeSOx technology by corona induced plasma was
developed.
As residual gaseous compositions strongly affect the DeNOx
processing performance, combination with catalysts and/or additives
is under research now.
On the other hand, TCE (trichloroethylene) is economically
decomposed by a barrier discharge reactor excited by 50 Hz and its
practical usage will be done near future.
Some other VOCs will be also processed easily.
Some new researches, mostly combination processes, are shown
with researcher’s group name
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KL03 Practical
Problems with Electrostatic Precipitators Can Provide Significant
Contribution to Science
Robert A. <astropietro
Research-Cottrell, Inc.
Abstract
Electrostatic precipitators (ESPs) have served industry as dust
and aerosol collectors since being invented by Frederick Cottrell in
1907. Since that time,
the design and sizing of ESPs has changed dramatically.
Required emissions from ESPs have decreased from those
required for “good neighbor policy”, to those required to
protect public health (PM-10/PM-2.5) or sensitive downstream
equipment. Additionally,
industry is constantly changing processes and operating conditions
to which we must apply ESPs, which create applications challenges.
Lastly the ESP suppliers themselves are making changes to the
electrode geometry, insulator assemblies, boundary clearances, etc.
to make the product less costly.
Occasionally changes result in a practical problem with the
new ESP design, which require solutions.
However, these practical problems opportunity and incentive
to advance the science of electrostatic precipitation.
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KL04 Analysis of ESP Parameters Critical for control
of fine Particulate Matter
Wang Liqian
Nanjing Electric Power Environmental Protection Science Research
Institute
Abstract
Recent epidemiology studies suggest that there is a connection
between fine particulate matter and health effects, including excess
mortality. The
electrostatic precipitator is often characterized by its total
collection efficiency, but it collects particles of different sizes
with varying efficiencies. It
is therefore appropriate to study the size=dependent performance of
precipitators and examine those parameters that have the most effect
on that performance for fine particles.
By using precipitator models, it is possible to determine the
sensitivity of the fine particle emissions to changes of each
parameter. Many
parameters have been investigated: voltage, gas volume, plate area,
gas composition, temperature, wave form, resistivity and others.
The resulting calculations allow a ranking of parameters
according to their emissions sensitivity.
The parameters for which the fine particle emissions are most
sensitive are average voltage and peak voltage, followed by gas
volume and plate area. Fine
particle emissions are least sensitive to gas velocity
maldistribution. The
sensitivity rankings allow precipitator modifications to be
optimized for the best performance at the least cost.
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KL05 Why
Does ESLP Possess Better Performance?
Abstract
Abstract not available
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