Cavitation is a process in which vapor bubbles form and collapse in a liquid due to pressure changes. This creates highly localized energy that can improve mixing, mass transfer, and reaction performance.

What is hydrodynamic cavitation?

Hydrodynamic cavitation is a pressure-driven process that generates cavitation effects in a flowing liquid. It is used to intensify industrial processes such as mixing, emulsification, dispersion, and chemical reactions.

How does hydrodynamic cavitation work?

Hydrodynamic cavitation works by creating local pressure drops in a liquid, which form vapor cavities. As pressure recovers, these cavities collapse and release energy in the form of shear forces, turbulence, and localized high temperatures and pressures.

What are the benefits of hydrodynamic cavitation?

Hydrodynamic cavitation offers energy-efficient operation, continuous processing, precise process control, and multi-functional performance. It can reduce operating costs, simplify process design, and improve overall efficiency.

Why is hydrodynamic cavitation energy efficient?

Because it is a pressure-driven process, hydrodynamic cavitation does not require high-frequency energy input. It converts hydraulic energy directly into useful process effects, making it efficient for many industrial applications.

Can hydrodynamic cavitation be used on an industrial scale?

Yes. Hydrodynamic cavitation is highly scalable and well suited for continuous flow and high-throughput industrial operations.

Which process parameters can be controlled?

Key parameters include pressure, flow rate, reactor geometry, cavitation intensity, and residence time. This allows the process to be adjusted for specific products and applications.

What applications are possible with hydrodynamic cavitation?

Hydrodynamic cavitation can be used for mixing, homogenization, emulsification, dispersion, reaction intensification, extraction, and cell disruption.

How does hydrodynamic cavitation compare with ultrasonic cavitation?

Compared with ultrasonic cavitation, hydrodynamic cavitation is generally more scalable and better suited for continuous industrial processing.

How does hydrodynamic cavitation compare with rotational cavitation systems?

Hydrodynamic cavitation systems often have a simpler design, lower mechanical complexity, and reduced maintenance requirements compared with rotational systems.

What advantages does advanced hydrodynamic cavitation offer over conventional venturi or orifice systems?

Advanced systems can provide better cavitation control, higher process efficiency, lower pressure loss, and a reduced risk of fouling.

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Benefit from Hydrodynamic Cavitation Technology

CaviFlow® Multifunctional Reactor

Cost and
Time Savings

Scalability

Ultrafine Fluids

Sustainability

Advantages of Industrial Cavitation Technology

Scalable Inline Processes

The aim of our patented RAPTECH Cavitation Technology is to optimize dispersion and homogenization processes for fluids of different viscosities in the industry - in a single reactor.

Compared to high-maintenance ultrasonic homogenizers and large batch centrifuges, RAPTECH's CaviFlow® Inline Modules offer a time-saving plug & play solution to significantly reduce operating costs while increasing product quality. All processes take place within the Cavitation Module to save energy. Only the upstream pump requires electricity. Read more about Hydrodynamic Cavitation here.

Advantages of Hydrodynamic Cavitation compared to Ultrasonic and Rotational Cavitation

In contrast to ultrasonic cavitation, it is more differentially scalable and therefore better suited for continuous operation
Compared to rotational cavitation systems, hydrodynamic cavitation technology is characterized by a simpler design with reduced mechanical complexity and maintenance requirements
Modern cavitation reactors outperform venturi or orifice plate systems by increasing efficiency and cavitation control and reducing pressure losses and fouling risk

Hydrodynamic Cavitation is more than just a powerful mixer. The CaviFlow® Inline Module acts as a multifunctional reactor and enables efficient and scalable process intensification in a wide range of industries.

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CaviFlow® Cavitation Module - your benefits

Operating Cost and Time Savings

Scalability and Flexible Industrial Use

Stable and Ultra-fine Fluids

Sustainability and Energy Efficiency

RAPTECH Project Service

To the CaviFlow® Module

Operating Cost and Time Savings

RAPTECH Cavitation Technology stands for outstanding resource efficiency. Thanks to cost and time savings, our CaviFlow® Inline Modules have an advantage over lengthy batch processes with large pump volumes or tank decanting with imprecise batches. Especially in comparison to energy-intensive systems, such as high-maintenance ultrasonic homogenizers. Cavitation with CaviFlow® takes place exclusively in the module - without an external ultrasonic source.

Replacement for resource-intensive systems
Improved ratio control
Time savings through inline process in existing process plants

The smart CaviFlow® Cavitation Modules require less tank volume and operate with reduced process times due to continuous single-stage operation. Cost savings due to lower maintenance requirements are the positive gain. RAPTECH Cavitation Technology guarantees the highest product quality.

Faster continuous process times
Optimum utilization of the production area
Reduced maintenance costs

Another plus: The hydrodynamic RAPTECH cavitation technology can be operated with low energy costs - naturally also with renewable energies. The CaviFlow® Plug & Play Modules consume no electricity - only the upstream pumps.

In the homogenization of heavy oil in the refinery and petrochemical industries, the patented RAPTECH cavitation technology achieves further specific advantages: clean combustion and - as a positive effect - equally clean process plants. This means significantly reduced kerosene deposits such as ash and coke in the pumps and pipes - and consequently less susceptibility to faults.

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What is Cavitation?

Hydrodynamic Cavitation is an advanced process technology based on the controlled formation and collapse of vapor bubbles in a flowing liquid. These bubbles are generated by pressure variations and release highly localized energy upon collapse—creating extreme conditions that enhance mixing, mass transfer, and chemical reactions.

How it works

Local pressure reduction generates vapor cavities
Bubbles grow and collapse during pressure recovery

Collapse releases

High local temperatures and pressures
Intense shear forces and turbulence
Reactive species (e.g., •OH radicals)

Result

A highly active microenvironment that accelerates physical and chemical processes

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Scalability and Flexible Industrial Use

The innovative RAPTECH Cavitation Technology can be used for dispersing and homogenizing for a wide range of applications with scalable flow rates. We always consider individual customer requirements for the specific application.

Scalable for various process parameters
Can be used for a wide range of applications
Additional technologies not required

With the CaviFlow® Inline Modules, Hydrodynamic Cavitation can be implemented as a plug & play solution in existing process systems to save space. For optimum utilization or even reduction of production areas.

Low investment costs
Implementation in existing process systems
Connection with thread or flange

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Cavitation | Industrial Applications

Refinery, Petrochemical and Heavy Oil Processing

Conditioning, homogenization, and process support for heavy oils, residues, fuel oils, refinery side streams, and complex hydrocarbon blends

Alternative Fuels and Fuel Upgrading

Blending and conditioning of renewable and alternative components such as FAME/biodiesel, glycerin, pyrolysis oils, and variable fuel mixtures

Water and Wastewater Treatment

Cavitation-enhanced Advanced Oxidation Processes (AOPs), and support for downstream polishing processes such as membrane filtration

Chemical Recycling and Circular Conversion

Feedstock preparation and process support for recycled, variable, multiphase, or difficult-to-handle circular feedstocks

Stable and Ultra-fine Fluids

With its homogenization and dispersion processes, the patented RAPTECH Cavitation Technology guarantees the highest product quality for fluids of different viscosities:

Fine and ultra-fine fluids
Particle sizes < 5 micrometers
High homogenization quality
Excellent viscosity
Stability and temperature resistance
Long shelf life
Improved transportability

Cavitation Technology offers further advantages in the field of industrial oil processing and alternative fuels:

Best rheological properties
Ideal pour and flash point
Lower preheating temperature

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CaviFlow® | Plug & Play Inline Module

Hydrodynamic Cavitation combines mixing, heat and mass transfer and reaction acceleration in a single system.

Thanks to its scalability and multifunctionality, CaviFlow® is strong for modern industrial processes - without high investments.

CaviFlow® Hydrodynamic Cavitation is a controllable and energy-efficient reactor designed to enable innovation and performance in industrial applications.

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Sustainability and Energy Efficiency

RAPTECH Cavitation Technology offers solutions for the production of (marine) fuel emulsions for shipping and industrial power plants. The addition of biofuels to conventional fuels is a viable option to reduce emissions while maintaining systems. In short: to keep investment costs at a manageable level.

Reducing consumption and pollutants
ISO 8217:2024
Without environmentally harmful additives

The "FuelEU Maritime" regulation underlines the growing urgency of using low-emission fuels. The European Union is obliging the shipping industry to significantly reduce its greenhouse gas emissions.

Reduce Emissions - Maintain Systems

In refineries, RAPTECH Cavitation Technology represents significant progress towards sustainability. Inline homogenization of heavy fuel oil (HFO) achieves more efficient and complete combustion. This leads to a noticeable reduction in harmful emissions such as NOₓ, SOₓ and CO₂ - by up to 25%. An additional benefit: kerosene deposits in systems, pipes and pumps are significantly reduced, which increases operational safety and reduces maintenance costs.

Clean combustion of HFO
25% less greenhouse gas emissions
Cleaner systems and pumps

Burn HFO clean now

R&D on Europe's only CaviFlow® Pilot Plant

RAPTECH not only simulates processes using computational fluid dynamics (CFD), but also implements them in practice on its own cavitation pilot plant.