Lng vapor handling configurations and methods

Details Lng vapor handling configurations and methods Lng vapor handling configurations and methods

F - Mech Eng,Light,Heat,Weapons

17

C

F17C 7/04 (2006.01)

Patent

CA 2645251

LNG from a carrier is unloaded to an LNG storage tank in configurations and methods in which expansion of compressed and condensed boil-off vapors from the LNG storage tank provide refrigeration to subcool the LNG that is being unloaded. Most advantageously, such configuration and methods reduce the amount of boil-off vapors and eliminate the need for a vapor return line and associated compressor.

L'invention concerne un GNL provenant d'un support déchargé dans un réservoir de stockage de GNL dans des configurations et des procédés dans lesquels une dilatation de vapeurs de perte par évaporation comprimées et condensées provenant du réservoir de stockage de GNL assure la réfrigération permettant de sous-refroidir le GNL déchargé. Le plus avantageusement, une telle configuration et de tels procédés réduisent la quantité de vapeurs de perte par évaporation et éliminent le besoin d'un circuit de recyclage des vapeurs et d'un compresseur associé.

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