Configurations and methods for lng regasification and btu...

Details Configurations and methods for lng regasification and btu... Configurations and methods for lng regasification and btu...

B - Operations, Transporting

01

D

B01D 53/14 (2006.01) C10L 3/10 (2006.01) F17C 7/00 (2006.01) F25J 3/02 (2006.01) F25J 1/00 (2006.01)

Patent

CA 2589280

LNG is pumped to supercritical pressure and vaporized, preferably in an offshore location to thereby form a natural gas stream with an intermediate temperature. A first portion of that stream is then processed in an onshore location to remove at least some non-methane components to thereby form a lean LNG, which is then combined with a second portion of that stream to form a sales gas having desired chemical composition. The intermediate temperature and the split ratio of the gas stream in first and second portion are a function of the concentration of the non-methane components in the LNG.

Selon l'invention, du gaz naturel liquéfié (LNG) est pompé à une pression supercritique et vaporisé, de préférence, dans un emplacement marin, de manière à former un flux de gaz naturel à une température intermédiaire. Une première partie de ce flux est ensuite traitée dans un emplacement côtier, de manière à éliminer au moins quelques composants non-méthane, afin de former ainsi un LNG pauvre, lequel est combiné ensuite à une seconde partie de ce flux, de manière à former un gaz naturel commerciable possédant la composition chimique souhaitée. La température intermédiaire et le rapport de division du flux de gaz dans les première et seconde parties sont une fonction de la concentration des composants non-méthane dans le LNG.

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