Maritime LNG

Stirling StirLNG liquefiers are very suitable for use in Maritime applications for LNG boil-off gas handling and re-liquefaction.

While storing and transferring LNG, boil-off gas (BOG) is formed which will increase the pressure in the system/storage tank. If this is not properly managed this gas has to be vented/released to the atmosphere. Not only is this significant pollution to the environment (methane is the second most prevalent greenhouse gas) but it is also loss of revenue. Venting boil-off gas can be a serious operational cost.

Adding Stirling Cryogenics equipment into the LNG handling system will help you manage this problem. The
StirLNG-1 and StirLNG-4 can be connected to any LNG system to re-liquefy LNG boil-off gas (BOG). After re-liquefaction the LNG is returned to the system, preventing the user from venting. Or LNG can cooled on the cryogenerator to prevent boil off gas formation in the first place.

The StirLNG liquefier can be put on any ship managing boil-off gas issues they might have. Whether it is handling cargo (LNG carriers, bunker barges, fueling ships etc.) or keeping LNG fuel tanks within its operating window (any kind of LNG fueled ship or vessel). The generic range we can offer is from 250 to around 24.000 kg/day (150 – 20.000 gal/day) of LNG boil-off gas re-liquefaction.

The standard StirLNG cryogenerators can be modified to meet any type of shipping codes and regulation and/or classification societies like ABS, Lloyds, DNV etc.

Possible applications for reliquefaction solutions with our equipment that can be considered are in tankers, ships, bunker barges, storage tanks etc.

Besides LNG, the units can also be used for other hydrocarbons and gasses.

The StirLNG-4 Cryogenerator has obtained ABS Type approval.

ABS Typa approval

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