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.


As featured in Womp 2010 Vol 10 - www.womp-int.com