公开(公告)号：US20230258401A1

公开(公告)日：2023-08-17

申请号：US18005478

申请日：2021-05-20

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Jorge Vincentelli ,  Yijun Liu ,  Ananda K. Nagavarapu ,  Xiaoli Y. Wright

IPC: F25J1/02 ,  F01K15/00

CPC classification number: F25J1/0242 ,  F01K15/00 ,  F25J1/0022

Abstract: A method of producing LNG. According to the method, a natural gas stream is compressed using first and second compressors. A cooler cools the natural gas stream so that the second compressor produces a cooled, compressed natural gas stream, which is liquefied in a liquefaction process. The liquefaction process uses a refrigerant compressor configured to compress a stream of refrigerant used to chill, condense, or liquefy the cooled, compressed natural gas stream. Using a heat recovery steam generation (HRSG) system, heat is recovered from a power source of the refrigerant compressor. A stream of pressurized steam is generated from the recovered heat. At least one of the first and second compressors is powered using at least part of the stream of pressurized steam.