公开(公告)号：US11703276B2

公开(公告)日：2023-07-18

申请号：US17447345

申请日：2021-09-10

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Sorin T. Lupascu ,  Yow-Yeen Lee

IPC: F25J1/00 ,  F25J1/02

CPC classification number: F25J1/0022 ,  F25J1/005 ,  F25J1/0052 ,  F25J1/0055 ,  F25J1/0072 ,  F25J1/0082 ,  F25J1/0087 ,  F25J1/0218 ,  F25J1/0236 ,  F25J1/0271 ,  F25J1/0274 ,  F25J1/0283 ,  F25J2220/64

Abstract: A system and method for producing liquefied natural gas (LNG) from a natural gas stream. Each of a plurality of LNG trains liquefies a portion of the natural gas stream to generate a warm LNG stream in a first operating mode, and a cold LNG stream in a second operating mode. A sub-cooling unit is configured to, in the first operating mode, sub-cool the warm LNG streams to thereby generate a combined cold LNG stream. The warm LNG streams have a higher temperature than a temperature of the cold LNG streams in the second operating mode and the combined cold LNG stream. The combined cold LNG stream has, in the first operating mode, a higher flow rate than the flow rate of the cold LNG streams in the second operating mode.