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

1989-08-21

1990-11-20

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 40, 62335, F25J 300

Patent

active

049708678

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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