×

RELIQUEFACTION OF BOIL OFF GAS

  • US 3,857,245 A
  • Filed: 07/20/1973
  • Issued: 12/31/1974
  • Est. Priority Date: 06/27/1973
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of reliquefying a part of the boil-off gas from a ship'"'"''"'"'s cargo of liquefied natural gas, which boil-off gas has been compressed for feeding as fuel to the ship'"'"''"'"'s motor, said method comprising the steps of separating a portion of the boiloff gas streAm that has been compressed for feeding to the ship'"'"''"'"'s boilers, further compressing said separated portion to a higher pressure, cooling said further compressed portion to condense it, the cooling being effected in part by utilizing at least part of the sensible cold in the boil-off gas prior to compression and in part by cold obtained by expanding the condensate, recovering reliquefied boil-off gas from the liquid fraction of the expanded condensate, and injecting liquefied natural gas into the boil-off gas at a point before the further compressed portion is cooled to condense it.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×