Welcome to Gasconsult LNG

Gasconsult Limited is an independent LNG liquefaction technology licensor that co-operates with owners of gas reserves, project developers, OEMs and E&C companies world-wide.

A summary of the technical content of this web-site is available as ZR-LNG Technical Summary in DOWNLOADS.

Gasconsult’s patented ZR-LNG (Zero-Refrigerant) process is highly differentiated. It combines simplicity with an energy efficiency comparable to modern base-load plants; around 300kWh/tonne in temperate climates. 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. The simple design, a 1 million tonne/year train typically contains only 11 equipment items; and elimination of external refrigeration systems reduces capital cost, the project implementation schedule and footprint of the plant. The process is suitable for use in the capacity range 0.05 – 2.5 million tonnes/year per train. Engineering has been developed for nominal 1.5 million and 1.0 million tonnes/year FLNG modules.

ZR-LNG has been progressively developed. Audits by two oil majors and several leading LNG engineering companies have validated the basic design. Leading OEMs have confirmed machine configurations and that all equipment operates in a window of proven operating experience.

For small-scale applications Gasconsult has an alliance with Osomo Projects BV of the Netherlands with whom a joint scheme termed ZR-iLNG has been developed. ZR-iLNG dramatically reduces equipment count, simplifies the liquefaction process and radically improves economic viability for small biogas applications and transportation fuel projects.


  • View video of design development programme


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