Bunker fuels
Cost and
time savings
time savings
Scalability
Ultrafine fluids
Sustainability
RAPTECH UADA-Technologie
Sustainable (bunker) fuel solutions thanks to UADA cavitation technology
Fuel emulsions - stable, low-emission, ready for use
With its patented UADA cavitation technology, RAPTECH enables the production of low-emission (bio) fuel emulsions as an alternative to conventional (bunker) fuels. The fuel mixtures are characterized by their sustainability and their absence of chemical additives and ensure a significant reduction in fuel consumption - while at the same time reducing pollutant emissions by up to 25 percent.
The high phase consistency and long-term stability of RAPTECH emulsions support both safe storage and low-risk transportation under industrial conditions. The Future Fuels are used in the following areas in particular:
The high phase consistency and long-term stability of RAPTECH emulsions support both safe storage and low-risk transportation under industrial conditions. The Future Fuels are used in the following areas in particular:
- Use as bunker fuel emulsions in cargo ships and ocean-going tankers
- Compliant with ISO 8217:2024 and FuelEU Maritime guidelines
- Use in stationary turbines of industrial power plants
- Suitable for low-emission energy generation
Advantages of RAPTECH (bunker) fuel emulsions
-100%
Addition of
Additives
-25%
Reduction
from emissions
Fuel emulsions for shipping and industry
- RAPTECH UADA technology uses controlled hydrodynamic cavitation to efficiently produce stable fuel emulsions by finely dispersing difficult-to-mix components such as heavy fuel oil, biodiesel and optionally water
This highly effective homogenization process - naturally with a flexibly adjustable mixing ratio - forms the basis for stable emulsions. Optionally based on renewable and alternative energy sources. The result is low-emission, consumption-optimized fuels, ideal for use in shipping and industrial power generation.
UADA cavitation technology is suitable for:
- Stable emulsions HFO
- Stable emulsions HSFO | VLFO | ULSFO etc.
- Biodiesel
- Bioethanol
- Pyrolysis oil from plastic waste
- Hydrogenated vegetable oil HVO
- Glycerine
- Water-in-fuel emulsions
- Upgrading heavy fuels
- Fuel reforming
- Improving fuel atomization
- additives
Conformity with ISO 8217:2014 & FuelEU Maritime
(Specification for bunker fuels)
(Specification for bunker fuels)
Technology and research highlights
Lower emissions and ISO 8217-compliant
Optimized combustion of bunker fuels through homogenized emulsions
RAPTECH's innovative UADA cavitation technology enables particularly fine homogenization of bunker fuels - especially with heavy oil components such as HFO and bio-based bunker fuels. The ultra-fine emulsion significantly reduces the droplet size in the bunker fuel, which leads to optimized combustion. This fine structure not only improves the energy yield, but also significantly reduces emissions.
The technology is fully ISO 8217-compliant and is ideal for processing modern bunker fuels, which are increasingly relying on sustainable blends. RAPTECH thus creates a reliable basis for the low-emission and efficient use of bunker fuels in the maritime sector.
The technology is fully ISO 8217-compliant and is ideal for processing modern bunker fuels, which are increasingly relying on sustainable blends. RAPTECH thus creates a reliable basis for the low-emission and efficient use of bunker fuels in the maritime sector.
Bunker fuels with reduced emissions
The low-emission bunker fuels from RAPTECH offer a sustainable solution for environmentally-oriented applications in shipping and industry. These specially developed bunker fuels have significantly improved emission behavior and enable the sustainable use of fossil and biogenic energy sources.
In the context of current regulations such as the EU Emissions Trading System (EU ETS), bunker fuels from RAPTECH represent an economically attractive option for reducing pollutants.
You benefit from:
In the context of current regulations such as the EU Emissions Trading System (EU ETS), bunker fuels from RAPTECH represent an economically attractive option for reducing pollutants.
You benefit from:
- Up to 25 % less emissions of nitrogen oxides (NOₓ) and sulphur oxides (SOₓ)
- Around 30% reduction in CO₂ and particulate matter when using bunker fuels
- Reduced need for expensive emission certificates thanks to optimized bunker fuels
Bunker fuels according to ISO 8217:2024
The requirements for bunker fuels are increasing - especially with the introduction of the FuelEU Maritime Regulation.
Operators in the maritime industry are faced with the challenge of making their bunker fuels not only efficient, but also legally compliant and climate-friendly.
RAPTECH provides the right solution for this: low-emission bunker fuels in accordance with ISO 8217:2024. These compliant bunker fuels meet current environmental standards and at the same time make an active contribution to decarbonizing the fleet.
The use of modern bunker fuels transforms sustainability into a strategic and economic advantage for shipping companies and shipping operations.
Operators in the maritime industry are faced with the challenge of making their bunker fuels not only efficient, but also legally compliant and climate-friendly.
RAPTECH provides the right solution for this: low-emission bunker fuels in accordance with ISO 8217:2024. These compliant bunker fuels meet current environmental standards and at the same time make an active contribution to decarbonizing the fleet.
The use of modern bunker fuels transforms sustainability into a strategic and economic advantage for shipping companies and shipping operations.
Do you have questions about our innovative fuel emulsions?
Our experts in the fields of chemistry and process engineering will provide you with competent advice on all aspects of using our sustainable RAPTECH (bunker) fuels in your plant.
Results and parameters
RAPTECH bunker fuels as a sustainable emulsion solution
RAPTECH's innovative bunker fuels are based on highly developed cavitation processes that have been specially developed for the production of efficient bunker fuels. These processes have been extensively tested and successfully validated at the company's own UADA pilot plant - a unique test facility in Europe.
| Properties & test methods | HFO 380 | HFO biodiesel |
| Brennwert ( DIN 51900:2023) | 40.598 MJ/kg | 42.396 MJ/kg |
| Density at 15 °C (calculated) | 989.6 kg/m³ | 969.7 kg/m³ |
| Kinematische Viskosität bei 40 °C (DIN EN ISO 3104:2024) | 600 mm²/s (calculated) | 151.3 mm²/s |
| Schwefel (DIN EN ISO 14596:2007) | 1,78% | 1,35% |
| Flammpunkt (DIN EN ISO 2719:2027) | 122 °C | 160 °C |
| Gesamtrückstand (ISO 10307-1:2009) | <0.07% | 0,01% |
| Pourpoint (DIN EN ISO 3016:2019) | 0°C | -21°C |
| Parameter | HFO 380 | HFO biodiesel |
| Preheating temperature | 90 °C | 0 °C |
RAPTECH bunker fuels are based on state-of-the-art emulsion technology and offer an environmentally friendly alternative to conventional fuels. The bunker fuels are characterized by a significant reduction in greenhouse gas emissions - by up to 25 % - and thus make an active contribution to sustainable energy supply in the maritime sector.
| Parameter | Conventional HFO | VVLSFO | RAPTECH fuel emulsions |
| ISO 8217:2024 Konformität | Yes | Yes |
| Water risk | None | Negligible (≤1%) |
| Greenhouse gas reduction | None | 20-25% |
| Raw material costs | High | Kidney (glycerine/PPO) |
| Engine modifications | None | None |
Saving on fuel costs
Savings on maintenance and lubricants
Energy savings through cleaning agents
Savings in compliance with the CII guidelines
Charter fee
Production of modern bunker fuels with UADA cavitation technology
The production of high-performance bunker fuels at RAPTECH is carried out using a multi-stage process based on the specially developed UADA cavitation technology. This enables the precise emulsification of various bunker fuel components according to customer-specific requirements and areas of application. The result is highly stable bunker fuels that are low-emission, efficient and sustainable.
RAPTECH does not use any environmentally harmful additives such as surfactants, emulsifiers or polymers in the production of its sustainable bunker fuels. Production is exclusively physical - clean, efficient and environmentally friendly.
- Component blending:
In the first step, the bunker fuels are composed of different components in a precisely defined ratio. The mixing ratio of the bunker fuels is flexible and can be adapted to any application.
- Emulsification:
The mixture of bunker fuels then undergoes the emulsification process using UADA cavitation technology. The two phases of the bunker fuels are combined in a highly intensive process.
- Homogenization:
In the RAPTECH ultrasonic acoustic flow reactor (UADA), the bunker fuels are homogenized to ensure a fine and even distribution of the components. This produces high-quality bunker fuels with optimized combustion characteristics.
- Quality assurance:
Finally, every bunker fuel produced is tested for its physical and chemical stability. The bunker fuels meet all application-specific standards and requirements of ISO 8217:2024.
RAPTECH does not use any environmentally harmful additives such as surfactants, emulsifiers or polymers in the production of its sustainable bunker fuels. Production is exclusively physical - clean, efficient and environmentally friendly.
CaviFlow® modules
Efficient bunker fuel emulsification with CaviFlow® inline technology
The RAPTECH CaviFlow® inline modules have been specially developed for the energy-efficient processing of bunker fuels. These compact plug & play systems enable the direct integration of state-of-the-art cavitation technology into existing fuel systems - ideal for the production and optimization of bunker fuels and bio-based fuel emulsions.
Thanks to standardized threaded or flanged connections, the CaviFlow® modules can be seamlessly integrated into your bunker fuel systems without any structural adjustments. The modules are immediately ready for operation, extremely low-maintenance thanks to the sophisticated easy-to-clean design and are characterized by high cost-effectiveness and flexible scalability.
Depending on the area of application and volume flow, the following variants are available for processing bunker fuels:
All modules are fully control-compatible with common PLC systems. Continuous process monitoring and data transmission in real time ensure maximum transparency, process reliability and efficiency - even in demanding applications with bunker fuels.
Thanks to standardized threaded or flanged connections, the CaviFlow® modules can be seamlessly integrated into your bunker fuel systems without any structural adjustments. The modules are immediately ready for operation, extremely low-maintenance thanks to the sophisticated easy-to-clean design and are characterized by high cost-effectiveness and flexible scalability.
Depending on the area of application and volume flow, the following variants are available for processing bunker fuels:
- CaviFlow® 6 - for bunker fuels with a flow rate of up to 6 m³/h
- CaviFlow® 25 - for bunker fuels with a flow rate of up to 25 m³/h
- CaviFlow® 50 - for bunker fuels with a flow rate of up to 50 m³/h
- CaviFlow® 100 - for bunker fuels with a flow rate of up to 100 m³/h
All modules are fully control-compatible with common PLC systems. Continuous process monitoring and data transmission in real time ensure maximum transparency, process reliability and efficiency - even in demanding applications with bunker fuels.
CaviFlow® | Can be integrated directly into fuel systems
The CaviFlow® inline modules are specially designed for direct integration into systems for the production and optimization of bunker fuels. As a ready-to-use plug & play solution, they enable quick and easy integration into existing fuel systems - especially for modern bunker fuels and bio-based fuel emulsions.
Thanks to their standardized flange or threaded connections, the modules can be integrated into any bunker fuel infrastructure without complex conversions. The robust design without moving internal parts guarantees long-lasting and trouble-free operation - even under extreme conditions when processing bunker fuels.
Thanks to the sophisticated easy-to-clean design, the modules are easy to maintain, which ensures long-term high process stability and availability in all bunker fuel applications.
Thanks to their standardized flange or threaded connections, the modules can be integrated into any bunker fuel infrastructure without complex conversions. The robust design without moving internal parts guarantees long-lasting and trouble-free operation - even under extreme conditions when processing bunker fuels.
Thanks to the sophisticated easy-to-clean design, the modules are easy to maintain, which ensures long-term high process stability and availability in all bunker fuel applications.
- Plug & Play solution
- Immediate use
- Low-maintenance technology
- Low investment costs
- Scalable flow rates
- Intelligent communication with the PLC system
Convert to fuel emulsions now - with CaviFlow® Plug & Play modules
Increase the efficiency and sustainability of your system: CaviFlow® inline mixers integrate state-of-the-art cavitation technology directly into your fuel system - ready to connect, low-maintenance and scalable. Ideal for fuel emulsions without conversion measures.
- Simply send us a short message. We look forward to your projects.
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Bunker fuels
Frequently asked questions on the topic: (Bunker) fuel
