SCR (Catalysts)

To meet future emission levels it is important to keep the catalyst (SCR) as clean as possible to maximize its efficiency. In catalysts, economizers, air preheaters, and other parts of a boiler, where the flue gas temperature is relatively low.

Infrasound soot cleaning is a method that can result in substantial savings due to its physical properties. A major advantage of the infrasound technology is the far reaching cleaning effect compared to steam soot blowing, compressed air soot blowing or acoustic cleaning using audible frequencies (sonic horns) since these methods only provide a local cleaning effect.

Steam soot blowing is a cleaning method best suited for cleaning of heat transfer surfaces in high temperature areas such as superheaters, where deposits are created due to molten components in the ash. For sonic horns the sound intensity is in contrast to infrasound attenuated quickly with distance from the horn and when the sound passes objects like catalyst elements.

The infrasound has high intensity in all parts of the elements regardless of hole size and shape (honeycomb etc.). Sound is screened only by objects with size comparable to the wavelength of the sound. Since infrasound has a very long wavelength of about 20 meters the attenuation of sound energy when passing a catalyst element is very small and the sound pressure/turbulence created in the flue gas is very large. Heat Management’s infrasound generators are the most powerful infrasound sources on the market.

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