Clean Energy and Water Technologies Pty Ltd

Clean Energy and Water Technologies Pty Ltd (CEWT) Carbon Cartridge Loop for LNG Prime Movers This concept proposes a closed carbon logistics loop for LNG‑fuelled long‑haul prime movers. Carbon dioxide emitted during vehicle operation is captured onboard and unloaded periodically at a service facility (“works”), and recycled into renewable methane using hydrogen produced from renewable electricity. In this architecture, carbon atoms circulate in a managed loop while renewable electricity provides the energy input. Methane (LNG) acts as the recyclable carrier molecule, enabling long‑range heavy transport without new fossil fuel inputs. Operating Principle 1. LNG is combusted in the vehicle, producing CO2 and water. 2. An onboard capture cartridge collects CO2 from the exhaust stream. 3. At approximately 200 km intervals, the cartridge is swapped at a works facility. 4. Captured CO2 is combined with renewable hydrogen in a methanation reactor. 5. The resulting methane is liquefied to renewable LNG and used to refuel vehicles. Example Energy Balance (Prime Mover – 200 km) Parameter (200 km Prime Mover Leg) Value LNG consumed ≈ 60 kg CO2 generated ≈ 165 kg Hydrogen required for recycling ≈ 30 kg Electrolyser electricity required ≈ 1.65 MWh Methane regenerated ≈ 60 kg Key Infrastructure Elements Vehicle • LNG prime mover engine • Exhaust CO2 capture cartridge • Cartridge swap interface Works Facility • Carbon cartridge receiving and handling system • CO2 conditioning and compression • Renewable electricity powered electrolyser • Methanation reactor system • LNG liquefaction and storage • LNG refuelling station Strategic Advantages • Utilises existing LNG heavy‑transport engine platforms • Converts CO2 from waste into fuel feedstock • Renewable electricity becomes the true energy input • Carbon atoms circulate as a reusable carrier molecule • Suitable for freight corridors, mining fleets and logistics hubs Clean Energy and Water Technologies Pty Ltd (CEWT) | ABN 61 691 320 028 | ACN 691 320 028