Daphne Technology’s innovative SlipPure system has been awarded approval in principle (AiP) from Lloyd’s Register for its Plasma-Catalytic technology. This marks a significant milestone in the fight against methane slip in the maritime and land-based oil and gas industries.

The advanced SlipPure system, which previously received AiP for its plasma-only configuration, now runs its full Plasma-Catalytic process. For the AiP, Lloyd’s Register (LR) witnessed the results confirming its performance. The advanced technology improves efficiency by lowering plasma power consumption, enabling very high methane slip reductions at exhaust temperatures well below those required for catalyst-only solutions.

In Daphne Technology’s view, this makes it both the most effective and efficient methane slip reduction system available. The SlipPure Plasma-Catalysis system also has a AiP from DNV.

Also read: MAMII identifies tech that slashes methane slip

Wavelet pulse power

Methane slip is a major contributor to greenhouse gas emissions, with a global warming potential 28 times greater than that of CO2 over a 100-year period. Reducing methane emissions is crucial as it is responsible for at least a quarter of the current global warming. As it has a much shorter atmospheric lifetime compared to CO2, cutting methane emissions now can lead to faster climate benefits.

Daphne Technology believes it is the only company actively developing a Plasma-Catalysis system for methane slip reduction. This advanced system integrates the patented wavelet pulse power (WPP) supply technology to generate plasma and utilises the company’s proprietary catalyst, ensuring unmatched performance and efficiency.

Also read: Technology trial for new methane slip solution

Testing campaigns

SlipPure has undergone several rigorous test campaigns utilising exhaust gas produced from a land-based test engine (746kW lean burn spark ignited engine type RR MTU 8V4000M55RN) installed at the Maritime Center of the University of Applied Science in Flensburg, Germany.

In January 2023, safe operation of the WPP power supply in the plasma-only system was demonstrated over nearly 75 hours of operation. Earlier this year, the Plasma-Catalytic process was evaluated over nearly 100 hours of operation, and LR witnessed 4.0 g/kWh removal of methane slip (62 per cent methane slip reduction at 75 per cent load) from exhaust gas with temperatures as low as 380°C.

The next version of SlipPure is currently being manufactured for deployment in November 2024 with a US oil super-major.

Key benefits

Key benefits of the SlipPure Plasma-Catalysis System are:

  • Reduced power consumption: More energy-efficient compared to plasma-only systems.
  • Feasibility: Operates effectively at the lower exhaust temperatures typical of marine engines.
  • Innovative technology: Combines the strengths of plasma and catalysis for superior methane abatement.

The Plasma-Catalysis system represents a breakthrough in methane abatement technology, significantly enhancing the efficacy of SlipPure while reducing power consumption and maintaining operational feasibility.

Also read: LR approves Seaspan feeder design ready for switch to ammonia

Monitoring impact

Additionally, combining SlipPure with Daphne Technology’s PureMetrics enhances the effectiveness of methane slip reduction by providing accurate quantification and reporting of GHG emissions. PureMetrics monitors the real-time impact of SlipPure, offering auditable reports and operational insights.

Photo: (From left to right) Constantinos Chaelis, Gas Markets & Technology lead, LR, Andy McKeran, chief commercial officer, LR, Dr Mario Michan, CEO and founder of Daphne Technology, and Panos Mitrou, Global Gas Segment director, LR.

Also read: MAN solution aims for 70% reduction in methane slip