High-efficiency Particulate Filters for Industrial Boilers
Tri-Mer Corp. designed its UltraCat
Catalyst Filters to provide up to 95% NOX
removal at the usual operating temperatures
of most industrial boilers. Dioxins
are also destroyed by the catalyst at
97%–99% efficiency. Along with high
NOX and dioxin removal, UltraCat filters
capture particulate to low levels of less
than 0.001 grains/dscf (2 mg/Nm3). For
efficient control of SO2, HCl, and other
acid gases, the UltraCat system incorporates
dry sorbent injection using sodium
bicarbonate or lime. The result is
90%–98% removal of these contaminants.
Mercury removal options are also
available. UltraCat Catalyst Filters are
manufactured from the combining of
advanced, fibrous ceramics with nanobits of NOX catalyst.
The catalyst is embedded
throughout the
¾-in. filter walls,
providing a large surface
area to interact
with the gas flow. Urea
or aqua ammonia is
injected upstream of
the filters, reacts with
the NOX on the catalyst
surfaces, and forms
harmless nitrogen gas
and water vapor. The
proprietary catalyst
formulation is resistant
to sulphur poisoning,
and because the nanocatalysts
are embedded
in the filter
walls, they are protected
from boiler fly
ash and sorbent injection
particulate. The
Tri-Mer system is
modeled on a proven
baghouse configuration
and uses a reverse
pulse-jet cleaning
action. The all-in-one
nature of the system is
claimed to provide
lower initial cost than
alternatives using
multiple components.
www.tri-mer.com
As featured in Womp 2010 Vol 10 - www.womp-int.com