Reliquefaction of boil-off from liquefied natural gas

Details Reliquefaction of boil-off from liquefied natural gas Reliquefaction of boil-off from liquefied natural gas

1988-09-06

1989-07-11

Capossela, Ronald C.

Refrigeration

Using electrical or magnetic effect

Thermoelectric; e.g., peltier effect

62 511, 62 541, F25J 100

Patent

active

048468622

ABSTRACT:
The present invention relates to an improved process for the reliquefaction of boil-off gas containing up to 10% nitrogen resulting from the evaporation of liquefied natural gas (LNG) contained in a storage vessel. In the process, a closed-loop refrigeration cycle is utilized wherein an isenthalpically expanded stream is warmed against an initially cooled boil-off stream. The boil-off LNG stream is initially cooled by indirect heat exchange with an isentropically expanded refrigerant stream.

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patent: 4766741 (1988-08-01), Bartlett et al.

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