Liquefaction of natural gas using process-loaded expanders

Details Liquefaction of natural gas using process-loaded expanders Liquefaction of natural gas using process-loaded expanders

F - Mech Eng,Light,Heat,Weapons

25

J

162/118

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

Patent

CA 2023225

ABSTRACT A process for the liquefaction of natural gas is disclosed wherein expansion valves for low-level multicomponent refrigerant and liquefied gas product streams are replaced with process-loaded turboexpanders having liquid inlet streams. Each turboexpander is coupled with a compressor or pump so that expansion work extracted from a given stream is used directly to compress or pump the stream prior to cooling and expansion. The use of process-loaded turboexpanders reduces the minimum work of liquefaction and increases the liquefaction capacity of the process.

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