公开(公告)号：US20240318909A1

公开(公告)日：2024-09-26

申请号：US18577527

申请日：2022-06-13

Applicant: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY

Inventor： Yijun LIU

IPC: F25J1/02 ,  F25J1/00

CPC classification number: F25J1/0241 ,  F25J1/0022 ,  F25J1/0042 ,  F25J1/0055 ,  F25J1/0057 ,  F25J1/0087 ,  F25J1/0216 ,  F25J2200/02 ,  F25J2200/40 ,  F25J2200/74 ,  F25J2210/06 ,  F25J2220/64 ,  F25J2245/02 ,  F25J2260/20 ,  F25J2270/60 ,  F25J2270/66

Abstract: Methods for increasing ethane and non-freezing heavier hydrocarbons recovery in natural gas streams for the liquefaction of natural gas to form liquefied natural gas (LNG), and in particular, utilizing scrub columns to treat the natural gas feedstreams, are provided. Other independent variations of the methods are disclosed herein.

公开(公告)号：US20230136307A1

公开(公告)日：2023-05-04

申请号：US18066369

申请日：2022-12-15

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Yijun LIU ,  Fritz PIERRE, Jr.

IPC: F25J1/00 ,  F25J1/02

Abstract: A method for liquefying a feed gas stream. A refrigerant stream is cooled and expanded to produce an expanded, cooled refrigerant stream. Part or all of the expanded, cooled refrigerant stream is mixed with a make-up refrigerant stream in a separator, thereby condensing heavy hydrocarbon components from the make-up refrigerant stream and forming a gaseous expanded, cooled refrigerant stream. The gaseous expanded, cooled refrigerant stream passes through a heat exchanger zone to form a warm refrigerant stream. The feed gas stream is passed through the heat exchanger zone to cool at least part of the feed gas stream by indirect heat exchange with the expanded, cooled refrigerant stream, thereby forming a liquefied gas stream. The warm refrigerant stream is compressed to produce the compressed refrigerant stream.