Process and apparatus for liquefying natural gas

Details Process and apparatus for liquefying natural gas Process and apparatus for liquefying natural gas

F - Mech Eng,Light,Heat,Weapons

25

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162/113

F25J 1/02 (2006.01) F25J 1/00 (2006.01) F25J 3/02 (2006.01)

Patent

CA 1109388

ABSTRACT OF THE DISCLOSURE This invention is directed to a method of liquefying natural gas having a pressure above its critical pressure. The gas is expanded to a pressure below its critical pressure. The expanded gas is introduced into a fractionating zone to remove the C5+ hydrocarbon in liquid form. The resultant gas stream is then compressed to a pressure above its critical pressure, cooled and then expanded to liquefy a major portion thereof. The liquefied portion is recovered and the non-liquefied portion is passed in indirect heat transfer relationship with the compressed gas stream for cooling it.

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