Fuel Blending Challenges in Modern Marine Bunkering
Today’s bunkering operators face three major fuel blending challenges:
Fuel diversification – managing blends of VLSFO, MGO, biofuels, pyrolysis oils, and synthetic fuels
Stability risks – avoiding incompatibility, stratification, and long-term storage issues
Compliance pressure – meeting SOx, NOx, and CO₂ limits without driving up fuel costs
Traditional fuel blending systems struggle to keep up. CaviFlow® Cavitation Technology offers a powerful alternative—one that ensures blend stability, supports desulfurization, and improves overall combustion performance.
Since the IMO 2020 sulfur cap, marine fuel blending has had to evolve at speed. New requirements—such as ISO 8217:2024, carbon intensity indicators (CII/EEXI), and expanding safety rules for alternative fuels—are reshaping how bunkers are formulated and delivered. Industry guidance from International Bunker Industry Association (IBIA) has also broadened allowances for biofuel blends, accelerating the need for smarter, more reliable fuel blending processes.
Take control of next-generation marine fuel blending
Deploy CaviFlow® Cavitation Technology to achieve cleaner, compliant, and cost-efficient fuels—fast to install, modular to scale, and ready for today’s and tomorrow’s fuel challenges.
Cavitation works by generating and collapsing microscopic bubbles within a liquid stream. When these bubbles implode, they release intense localized energy—heat, shear forces, and turbulence—that dramatically enhance mixing and chemical reactions.CaviFlow® inline-modules use this principle as a tunable reactor, purpose-built for advanced marine fuel blending. The results are:
Homogenized multi-phase fuel blends
Accelerated chemical reactions such as oxidation and partial desulfurization
Long-lasting, fine emulsions that stay stable in storage and use
In short, CaviFlow® inline-modulesturn fuel blending from a mechanical process into a precision-controlled chemical upgrade.
Fuel Blending Innovation with CaviFlow® Technology
Better calorific value compared to HFO
Lower kinematic viscosity
Reduced energy requirements for preheating
Efficient reduction of pour point
Secure handling at lower temperatures
Analyses and results
Advanced and efficient
Real-World Applications of CaviFlow® in Fuel Blending
Fuel Blending Stability and Compatibility As blended fuels become the norm, stability issues become the enemy. Cavitation with the CaviFlow® inline-module ensures even dispersion of asphaltenes and heavy fractions, preventing phase separation. It also enables reliable blending of biofuels and pyrolysis oils with conventional marine fuels—producing stable, combustion-optimized blends.
Sulfur Reduction Through Advanced Fuel Blending Cavitation-enhanced oxidation can reduce sulfur compounds directly during fuel blending. This helps vessels comply with regulations from the International Maritime Organization (IMO) while reducing dependence on costly exhaust after-treatment systems.
Catalyst Dispersion and Process Efficiency In treatment and blending facilities, cavitation breaks catalysts into ultra-fine, highly active particles. The result is faster processing, higher throughput, and more efficient fuel blending—especially valuable for high-volume bunkering operations.
Hydrodynamic Cavitation Technology
Fuel Blending Innovation with CaviFlow®
The CaviFlow® inline-systemsdeveloped by RAPTECH provide an advanced, energy-efficient platform for enhancing biodiesel quality through controlled hydrodynamic cavitation. Engineered as compact, self-contained units, these modules are designed for seamless deployment within existing fuel blending production infrastructures, where they intensify critical processing stages without disrupting plant operation.
Thanks to standardized flange and threaded interfaces, the CaviFlow® unitscan be installed quickly and easily, eliminating the need for mechanical modifications to existing facilities. The systems are delivered in a ready-for-use configuration and feature a maintenance-optimized design with integrated easy-to-clean functionality, ensuring dependable performance in continuous fuel blending operations. Flow capacities are available across a broad range—from pilot-scale applications at 6 m³/h up to industrial throughputs of 100 m³/h—allowing straightforward scaling as production demands evolve.
Key advantages for fuel blending include:
Inline, Plug & Play system integration
Short setup and commissioning times
Reduced investment and operating costs
Minimal service and maintenance effort
Modular architecture with scalable throughput
RAPTECH’s cavitation-based CaviFlow® solutions are purpose-built for fuel blending innovation, enabling producers to significantly enhance process performance while lowering overall energy consumption and reducing the use of chemical additives. This technology supports a durable, forward-looking pathway toward more efficient and sustainable fuel manufacturing.
Deploy inline hydrodynamic cavitation to enhance biodiesel quality, reduce energy and chemical input, and scale seamlessly from pilot to industrial operation – without modifying your existing plant.