Acoustic Cleaning encompasses the realm of sound transmission through solids

Acoustic Cleaning encompasses the realm of sound transmission through solids. It is best described by the creation of rapid pressure fluctuations. These pressure fluctuations are transmitted into the particulate matter or “bonded” dry material causing the solid particles to resonate and dislodge from the surface they are deposited on or bonded to. Once dislodged, the materials fall, either due to gravity or are carried away by the gas or air stream within the process

This non-intrusive, affordable technology will increase the efficiency of process plant, provide improved thermal conductivity, prevent material blockage and remove particulate build up wherever ash, dust, powders or granular materials are processed, generated, stored or transported.

Primasonics Acoustic cleaning systems ranging from 60Hz-420Hz in fundamental frequency have been beneficial in both preventing material hang-ups and maintaining maximum continuous material flow in a range of industrial processes including but not limited to:

• Silos and Hoppers
• Boilers, Economisers, Superheaters & Heat Exchangers
• Baghouse Filters
• Cyclones
• Spray Dryers
• ID Fans
• Ductwork
• Electrostatic Precipitators
• Selective Catalytic Reactors

Primasonics Acoustic Cleaners operate at fundamental frequencies much higher than the natural frequency of the application construction thus preventing resonance leading to vibrational/structural damage. Instead sound at an extreme sound pressure level is focussed into the bulk/build-up material directly which is used to break the adhesive and cohesive bonds between the material particles and the walls of the application.

How do Acoustic Cleaners work

Primasonics Audiosonic Acoustic Cleaners are simple in their operation, requiring only normal plant compressed air for their initial energy source. Compressed air enters the Wave Generator and forces the only moving part, the ultra-high-grade Titanium Diaphragm to reverberate very rapidly within its specially designed housing. These rapid reverberations set up the standing sound waves which are then amplified from the base tone to the selected key fundamental frequency set by the bell section itself. The current range of models produce set fundamental frequencies between 60-420Hz.

Acoustic Cleaners are very easy and simple to install by either using Primasonics standard connecting flange, mounting tube assembly or custom mounting arrangements designed specific to suit the application. The fundamental frequency and therefore model required along with the quantity are determined on a case-by-case basis dependant on a number of factors and parameters within the application itself. A dimensional drawing outlining each elevation of the application along with specific questionnaire are requested prior to being able to quote. The possible mounting positions are also taken into account in being able to calculate the unit(s) required for effective coverage.

The Acoustic Cleaning systems are extremely low maintenance with the only consumable part being an aerospace specification Titanium Diaphragm, which should provide a minimum of 2 years uninterrupted service before requiring replacement. This is then a very simple and short task taking approximately 10 minutes to remove and replace and can usually be undertaken while the system remains online with Acoustic Cleaner isolated.