 Inspections and Audits
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Are you concerned about
how your Electrostatic Precipitator is operating?
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 Our
expert technicians are specially trained in the evaluation of
electrostatic precipitators
to determine what changes are needed in order to maximize
collection
efficiency, lower maintenance, and extend equipment life.
This
is an engineering design evaluation that focuses on your entire
system. After all, your ESP performance is a function of
three things; Mechanical, Electrical and Process. We do
more than just inspect your ESP - we inspect your process too.
In some cases small changes in your process may be the cause of
poor ESP performance
Our reports are very detailed and provide an insight into the
functionality of your ESP and where improvements can be made.
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Mechanical
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Following our inspections a detailed report is created
which includes various diagrams like the one opposite plus a
full discussion of the current ESP condition and it's
immediate life.
All
faults identified are given weighting depending on
criticality to performance and cost of rectification.
Once
the inspection is completed the report can be used by a
maintenance crew - either our expert crew or your local
contractors - to complete the rectification work.
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Example of a typical internal layout diagram
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Electrical
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In the
end, it is the flow of electricity and the strength of the
electrical field that will capture the dust as it passes
through the precipitator. Unless this system is
optimised you may be not achieving your maximum collection
efficiency.
We
look at your electrical system from the single phase feed
through to the connections at the ESP. We can perform
many different system tests including dielectric tests on
your transformer rectifier oil.
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Example of a typical ESP
secondary waveform
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Process and Resistivity
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We can
examine your process from an operations perspective as well
as mechanically and electrically.
One of
the most critical variables that effects ESP performance is
the resistivity of the dust that is being fed to it.
Your process has a dramatic effect in altering the
resistivity of the dust and hence in effecting the emissions
out the stack. We can examine your process and perform
resistivity tests to determine the optimum mode of operation
for your plant. Sometimes something as simple as water
injection (see our section on
evaporative gas conditioning)
or slight process changes can bring you back into ideal
conditions.
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Example of a typical
resistivity curve
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Gas distribution studies
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In
many cases poor gas distribution through an ESP may be the
forgotten underlying problem. Generally most ESPs were
"tuned" at the time of commissioning to allow them to have
an even flow of gas across the full cross section.
This has probably never been done again in the life of the
ESP. As the ESP ages changes occur to the gas
distribution screen, areas block, others open up.
Also, with the need for greater and greater production, it's
likely that your ESP is now handling more air than it was
originally designed for. In many cases tuning of
the ESP to suit the current conditions can substantially
improve performance and dramatically cut emissions.
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| Benefits
of a TAPC Inspection |
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Looks at
all facets of ESP performance not just mechanical
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Provides
overview and analysis of existing system.
- Identifies
problem areas within you ESP whether they be mechanical,
electrical or process related.
- Makes recommendations
for repair or design changes.
- Increases
accuracy of planning.
- Makes recommendations
for potential increased production.
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Makes recommendations
for decreasing emissions and increasing system efficiency
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Creates a
detail maintenance plan for future outages.
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