A technology that does what no one else had managed

The only patented process that removes sulfur from HSFO without blending.

The Rigby Process®

The Rigby Process® was born from a very simple question that nobody had taken seriously: what if instead of finding a new fuel, we simply removed the sulfur from the one that already exists?

That's exactly what we do — and the result is a patented, proven process that converts HSFO into fully compliant VLSFO or ULSFO, without blending, without compromise.

This process enables the production of Very Low Sulfur Fuel Oil (VLSFO – 0.5% sulfur) and Ultra Low Sulfur Fuel Oil (ULSFO – 0.1% sulfur), fully aligned with IMO 2020 regulations, while preserving the key performance characteristics required by modern marine engines.

Precision Engineering. Industrial Efficiency.

The technology is engineered to operate with:

Minimal footprint and modular design
Low operational complexity
Rapid integration into existing infrastructure

Unlike conventional refining methods, the process preserves fuel integrity while maximizing output, achieving up to 96% usable product yield.

Performance Without Trade-offs

Rigby fuels maintain the characteristics required by marine engines:

High energy density
Low contaminant levels
Stable performance without blending penalties

This ensures operational efficiency while reducing engine wear and fuel consumption.

Measurable Environmental Impact

The process delivers a substantial reduction in emissions:

–80% SOx
–60% NOx

Supporting global decarbonization efforts while meeting the most stringent maritime regulations..

As the shipping sector adapts to stricter environmental standards, this technology provides a direct, scalable answer:

Monetizes refinery residues
Eliminates dependence on inefficient blending
Enables a cleaner, more efficient fuel ecosystem

A Structural Solution for a Changing Industry

Patented. Proven. Ready.

The Rigby Process® is protected by multiple US patents. But what matters more than the paperwork is what's behind it — decades of refining engineering experience, a process built on commercially proven technology, and a team that has designed, built, and operated these units in real facilities around the world.

This isn't a pilot project. It's ready to scale.