RAPTECH CaviFlow^® is an inline cavitation-assisted fuel-conditioning technology for the modern marine fuel market. It is designed as a plug-and-play inline module for easy integration into existing systems. The advantage is that it requires minimal investment.

CaviFlow^® helps shipowners, bunker suppliers and fuel blenders to improve fuel stability, reduce sludge-related losses and support smarter blending strategies. It also strengthens their readiness for a more tightly regulated industry. In a sector seeking practical, well-founded solutions, CaviFlow^® offers a balanced proposition: better fuel quality, enhanced handling performance and greater flexibility in marine fuel operations, without the need for major infrastructure changes or significant investment.

Maintain Systems – Reduce Investment
Advanced Fuel Treatment through Hydrodynamic Cavitation

Marine fuel plamanagement is becoming increasingly challenging. Shipowners and bunker suppliers are operating within tighter sulphur limits and facing pressure to reduce carbon intensity. They must also contend with variable fuel quality and an increasing proportion of bio-based and circular blending components. The challenge lies not only in sourcing fuel, but also in ensuring that it remains stable, homogeneous, compliant and operationally reliable from tank to injector.

CaviFlow® Module as an Inline Solution

RAPTECH’s CaviFlow^® technology is designed to support that task. Using patented hydrodynamic cavitation, the module is installed inline within existing fuel systems to improve fuel quality during storage, transfer, blending, or onboard preparation. Rather than simply intensifying mechanical mixing, the system uses controlled cavitation effects in the flowing liquid, helping achieve finer dispersion, better phase uniformity, and more consistent fuel behaviour.

What CaviFlow® helps deliver

• More homogeneous and stable fuel blends
• Lower sedimentation and sludge-related losses
• Improved flow behaviour and easier fuel preparation
• Better atomization potential and steadier combustion behaviour
• Stronger readiness for biodiesel, pyrolysis oil, water-emulsion, methanol, and other transition blends

Why this matters

Residual and blended marine fuels can lead to sedimentation, sludge, incompatibility, filter loading, separator losses, poor atomization, injector fouling, and avoidable maintenance. For ship owners, that is an operational issue. For bunker suppliers and blenders, it is a product-quality and customer-confidence issue.|

CaviFlow^® is intended as a practical inline treatment step that supports the quality and handling characteristics of the fuel already being used. It does not prescribe one blending route or replace sound fuel selection. It helps owners and suppliers work more effectively with compliant fuels and blends within existing systems.

As experts identify whatever compliant fuel or blend a supplier or owner chooses to use, RAPTECH improves its quality, stability, and handling characteristics without forcing major system conversion.

A practical fit for shipowners & bunker suppliers

CaviFlow^® can be integrated as an onboard fuel-conditioning solution that helps improve homogenization before fuel becomes waste in the system. Better dispersion can mean lower sludge carryover, less paid-for fuel lost in settling and separation, less cleaning burden, and smoother downstream handling.

For bunker suppliers, refiners, and fuel blenders, the value proposition is equally practical. Better stability and lower sedimentation can support more sellable product, fewer downstream issues, and a stronger quality story for customers.

This is especially relevant where alternative or renewable blending components are involved, since conventional blending does not always produce a stable or resilient product.

Typical Applications

Oil & Energy Sector

• Fuel homogenization and stabilization
• Sedimentation reduction in heavy fuels
• Processing of alternative or blended fuels (biofuels, pyrolysis oils, etc.)

Marine Sector

• Onboard vessels fuel conditioning and homogenization
• Improved combustion efficiency and reduced sludge formation
• Facilitation of alternative fuel blending within existing systems
• With its inline, plug-and-play design, RAPTECH offers shipowners a practical fuel-conditioning solution that can be integrated into existing systems.