Process for liquefied natural gas

Details Process for liquefied natural gas Process for liquefied natural gas

F - Mech Eng,Light,Heat,Weapons

25

J

162/113, 162/118

F25J 1/02 (2006.01)

Patent

CA 1195602

ABSTRACT A process is disclosed for producing a purified liquefied natural gas (LNG) from a raw natural gas feed containing methane and hydrocarbon impurities of C2 and higher wherein the raw feed is cooled, distilled to remove impurities, and liquefied, such that the distilla- tion reflux is supplied by a portion of a subcooled methane-rich liquid stream exiting the middle bundle of a three bundle main cryogenic heat exchanger having a mixed cryogenic refrigerant. The raw feed is cooled in the first bundle of said main exchanger.

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