Gasconsult Limited is an independent LNG and Liquid Hydrogen (LH2) technology licensor that co-operates with energy companies, project developers, OEMs and E&C companies world-wide.

Gasconsult’s patented ZR-LNG (Zero-Refrigerant) liquefaction process is highly differentiated. It uses no external refrigerants, using the natural gas feed as the refrigerant medium in an optimised system of expanders; achieving the highest methane cycle efficiency commercially available; and a superior efficiency to single mixed refrigerant (SMR) processes. The simple design and elimination of refrigerant offloading, storage and blending facilities reduces capital cost, the project implementation schedule and footprint of the plant. Logistical issues around refrigerant supply are also completely eliminated.

ZR-LNG+ is an integrated cooling variant of the ZR-LNG process. ZR-LNG+ achieves a power demand and carbon emissions comparable to the complex base load DMR and C3MR technologies but with a 30-40% reduction in equipment count.

Gasconsult’s patented OHL (Optimised Hydrogen Liquefaction) technology has a power demand of <7 kWh/kg, some 40% less than current LH2 new build practice. OHL utilises low-cost readily available nitrogen or natural gas as the pre-cooling refrigerant and hydrogen as the liquefaction refrigerant. It avoids the complexity of mixed refrigerant pre-cooling and high-cost speciality refrigerants such as neon and helium; providing a highly competitive balance between capital and operating costs.

Optimised Hydrogen Liquefaction