Highlights
- Ultrasonic vibration cleans internal surfaces without disassembly, reducing buildup and downtime
- Runs during production and between batches, shortening cleaning time and improving stability
- Cuts maintenance costs, contamination risk, and boosts overall equipment effectiveness
If you run a dry powder process, Cleaning in Place is often where uptime disappears. Filters foul. Cones bridge. Pipes cake up and then the routine starts. Production stop. Open equipment. Send people onto platforms. Clean the spots that are hard to reach. Put everything back together. Restart.
Maintenance engineers already know the pain. The real question is how to keep equipment clean without turning every batch change into a maintenance project.
Acoustic Cleaning in Place is a dry Clean in Place method that uses ultrasonic transducers to make steel surfaces vibrate. That vibration prevents buildup and helps remove deposits without disassembly. It can run as prevention during production and as a stronger cleaning cycle between batches.
What is Cleaning in Place
Cleaning in Place is a method to clean internal surfaces such as pipes, filter housings, filter walls, and silos without dismantling the system. The goal is simple. Reduce downtime, reduce labor, reduce exposure to operators, and make cleaning more consistent and less dependent on which technician is doing it, ensuring stable results.
In wet processing, Cleaning in Place often means water, chemistry, temperature, and turbulence. In dry powder processing, Cleaning in Place often becomes a mix of manual vacuuming, air lances, noisy knocking devices, and opening equipment to reach the difficult areas. That is where time and cost stack up.
What is Acoustic Cleaning in Place
Acoustic Cleaning in Place uses sound energy to clean in place. Transducers are placed on the equipment wall. They excite the steel and create controlled vibration. This reduces adhesion and breaks up deposits. It can also prevent powder from sticking in the first place.
You can think of Acoustic Cleaning in Place as two operating strategies.
- The first strategy is prevention during production. The transducers run continuously or in a duty cycle. The surface stays active, so powder is less likely to stick and consolidate.
- The second strategy is removal between batches. A power mode cycle increases cleaning intensity to remove agglomerated product after finishing a batch.
Both strategies are designed to reduce the need to open equipment and to shorten the cleaning window that drives changeover time.
The problem we keep hearing from manufacturers
Across food production, pharmaceutical, chemicals, ingredients, and bulk solids handling, the same story repeats.
We can clean the filter media, but the housing and cone still cake up. We lose hours because we cannot reach the inside of the filter, silo, or piping. We want predictable batch change cleaning to reduce cross contamination risk. Water is not an option, or it creates corrosion and drying problems.
Those are not minor complaints. They are constraining your production performance.
What we learned when we developed Power Acoustics Cleaning in Place
To make Acoustic Cleaning in Place practical, we treated it like an engineering problem, not a gadget. The target applications were processes handling ultra fine and adhesive powders where sticking causes extended cleaning times and increases the risk of cross contamination at batch changes.
The key technical lessons were straightforward.
- Wall excitation works. If you can inject controlled vibration into the right surface, sticking behavior changes and deposits release more easily.
- Placement matters. Transducer location and the surface coverage determine whether you clean the full internal geometry or only local zones.
- Modeling matters. Geometry, stiffness, boundary conditions, and product behavior all influence the vibration pattern. If you ignore that, you create dead zones that still foul.
- A “Dual Mode Configuration” makes operational sense. A prevention mode during production plus a stronger power cleaning mode between batches fits how large industrial sites actually run.
Why dry powder processes struggle with classic Clean in Place
Dry powder deposits do not behave like “dirt.” Many powders are cohesive, compressible, electrostatic, hygroscopic, or simply ultra fine. This changes everything.
Pressure drop drifts and filtration performance becomes unstable. Bridging and flow stoppages appear in cones and hoppers. Deposits become hardened layers that are hard to remove. Cleaning becomes longer and more intrusive. Cross contamination risk increases at batch changes.
Most of these deposits form in the worst geometries. Filter housings, division plates, cones, long ducts, elbows, and low velocity sections. These are exactly the zones that are time consuming to reach and clean.
How to reduce the need for Cleaning in Place
A well thought through system design can also reduce how much Cleaning in Place is needed in the first place. In many cases, fouling is not only a product property issue, but a design issue. Low velocity sections, dead legs, poor transitions, sharp elbows, local cooling and condensation risk, and non uniform flow distribution all increase the chance that dust settles, compacts, and sticks. A Pre Engineering Study helps map these risks early and translate them into design choices that prevent buildup, such as:
- Improved duct routing
- Stable transport velocities
- Balanced extraction
- Better inlet and outlet geometries
- Filter internals designed for predictable product release.
When the system is designed around these fundamentals, Acoustic Cleaning in Place is still valuable, but it can often be applied at lower intensity, for shorter cycles, or only at batch change instead of being relied on as the primary way to keep the system clean.
Benefits of Cleaning in Place and why Acoustic Cleaning helps
When engineers ask “what is the benefit of Cleaning in Place,” they usually want measurable outcomes.
1. Less downtime
If cleaning drives changeover time, prevention during production and shorter between batch cleaning cycles directly improve OEE (Overall Equipment Effectiveness).
2. Lower maintenance costs
Less disassembly reduces man hours, reduces confined access work, and reduces the need for scaffolding and special tooling. It also improves repeatability, because you rely less on manual cleaning quality.
3. Dry cleaning
No water is a major advantage in powder processes. It avoids corrosion risk, avoids erosion issues linked to wet cleaning methods, and avoids extended drying time.
4. Reduced cross contamination risk
Batch processes need predictable residue control. If you can prevent buildup and remove deposits in place at the right moments, you reduce the variability that creates quality risk.
5. Product recovery and waste reduction
Product stuck in housings and pipes is either wasted or becomes contamination. Better release and better cleaning in place typically improves product recovery.
Aligning Acoustic CiP with Preventive Maintenance
Acoustic Cleaning in Place can reduce fouling and shorten cleaning cycles, but long term performance still depends on planned inspection and servicing. Preventive Maintenance focuses on planned, regular servicing before problems occur, with the aim to avoid unexpected downtime, maintain efficiency, and keep compliance and safety under control. It is also the moment to verify system performance, inspect critical components, and address wear before it escalates into production stops.
Summarizing Acoustic CiP
Acoustic Cleaning in Place is best understood as an uptime and maintainability tool for dry powder processes. It targets the surfaces that create the most downtime, supports prevention during production, supports removal between batches, and reduces the need to open equipment for cleaning.
Where Acoustic Cleaning in Place fits best
Acoustic Cleaning in Place is strongest where deposits form due to adhesion and cohesion, where access is difficult, and where downtime is expensive.
Common locations include filter housings, walls, division plates, and cones. Common locations also include silos and hoppers, especially transition zones. Pipes and ducts are relevant too, especially elbows, expansions, and low velocity sections.
It is often used alongside other cleaning functions rather than replacing them. Reverse pulse jets remain effective for filter bag cleaning. Product specific air sweeps can be used for division plates and cones. Acoustic Cleaning in Place targets the internal surfaces that are otherwise hard to clean without opening equipment.
FAQ’s about Cleaning in Place & Acoustic CiP
Cleaning in Place cleans internal surfaces such as pipes, filter walls, and silos without dismantling equipment. The benefit is reduced downtime and reduced resources needed for maintenance.
The benefit is less downtime, fewer labor hours, improved safety through reduced exposure, and more repeatable cleaning results.
Acoustic Cleaning in Place is a dry Cleaning in Place method. Ultrasonic transducers excite the equipment wall so deposits loosen and sticking is reduced. It can be used for prevention during production and for removal between batches.
Yes. Prevention mode can run during production to reduce the formation of buildup. This reduces the frequency and duration of cleaning events.
Power Mode is a higher intensity cleaning cycle designed to remove agglomerated product after a batch ends. It is used when deposits are stronger or when batch change residue control is critical.
In many applications it complements it. Pulse jets clean filter bags. Acoustic Cleaning in Place helps keep housings, cones, and internal surfaces cleaner. This reduces the time spent opening equipment to clean difficult zones.
It is non invasive because it cleans without water and without mechanical scraping. The design still requires engineering. Transducer placement, vibration levels, and safety constraints must be matched to the equipment and product.
ATEX zoning is driven by the likelihood and duration of explosive atmospheres. If dust is better controlled through source elimination, source extraction, and ventilation, the required zoning can often be reduced. This is site specific and must be assessed and documented in the Explosion Safety Document.
Learn more with the Reduced ATEX zoning Webinar.
Food, pharmaceutical, chemicals, and ingredients manufacturers often face the same sticking and fouling patterns in filters, pipes, and silos. That is why Cleaning in Place and dry Clean in Place methods matter in these sectors.
