What sets AAT apart?

Our unique capability is that we use an always-on low intensity sound field that envelopes the entire volume of the Convection Pass or Air Preheater. Once the deposits (that are left by the sootblowers) are removed, the Acoustic Cleaners keep operating and maintain cleanliness.

All other technologies uses high intensity directional energy that can only clean a small area directly in front of the device. Due to the erosive nature, these devices should only be used when there are actual deposits on the tubes (or elements).

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What do you have over sootblowers?

Sootblower technology dates back more than 100 years. Although improvements have been made, the core operating principle has not changed.

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We already tried horns!

We are not horns!

Parabolic horns are industrialized fog horns. They emit a wide range of frequencies, most of the energy comes out a frequencies that are not relevant for cleaning. As such, the horn is a directional device with limited reach. The leading manufacturer concurs that the straight ahead reach may be less than 20 ft. However utilities have been reporting that little penetration occurs inside the tube bank or outside of the cone shaped effective area. They are perfectly suited for those applications where the horns can be pointed at a problem area such as in a precipitator.

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Do you shake the tubes or elements?

No, WaveMaster(TM) Acoustic cleaning is strictly a flue gas phenomena. We are oscillating the flue gas, which then causes a resulting drag force on entrained ash particles. Both tubes and heating elements are surrounded with a virtually uniform sound field. As a result, an individual tube or heating element sees sound from every side and does not move.

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Can workers be inside the boiler with the Acoustic Cleaners in service?

We recommend that the Acoustic Cleaning system is put out of service during an outage where entry permits will be issued.

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Is it necessary to perform off-line cleaning during the outage where the Acoustic Cleaning system is installed?

We recommend that a thorough waterwash be performed during the outage. A WaveMaster™ Acoustic Cleaning system will slowly remove existing deposits over time, provided the deposits are dry and fluffy. During the initial cleaning period deposits may brake away in larger chunks, which may cause temporary higher pressure drops.

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