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FILTER
ELEMENTS
Ceramic filter elements can operate at temperatures up to 1000°C.
The practical temperature limit is determined by the steel type used to
support the filter elements (reactor housing's) . Reactor Housing's of
mild steel can operate at temperatures up to 450°C. Operating at elevated
temperatures can offer distinct advantages:
- No
need for dilution air or excessively long flue runs to reduce the gas
temperature.
- Heat
exchangers for heat recovery can be positioned after the filter, avoiding
deposition of particulate.
- Operation
above dew points for acid gases, thus minimising corrosion.
- Dry
scrubbing of acid gases using sodium bicarbonate or lime is most efficient
at specific elevated temperatures.
PROPERTIES
OF ICE (UK) Ltd CERAMIC FILTER ELEMENTS
In
bag retrofit applications, ICE (UK) Ltd elements have proved that they can
handle at least double the normal face velocity for a bag plant.
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- Excellent
thermal shock resistance.
- Inorganic
refractory binder for maximum high temperature strength.
- Fully
machined for excellent dimensional accuracy, ensuring uniform and concentric
walls, and square
neck providing strength to the top section of the candle.
- Unaffected
by incandescent particles and sparks.
- Controlled
uniform permeability, allowing high filtration volumes to be achieved
with excellent reverse jet cleaning performance.
- Resistant
to acid gases (except HF in moist sub-dew point conditions)
- High
filtration efficiency, using the conditioned dust cake as the ultimate
filter, efficiencies of 99.99% can be achieved.
- Slightly
tapered elements, allowing aerodynamic flow around the elements and
helping to avoid the build up of particulate between the elements.
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