公开(公告)号：US12050054B2

公开(公告)日：2024-07-30

申请号：US16851632

申请日：2020-04-17

Applicant: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY

Inventor： Yijun Liu ,  Ananda Krishna Nagavarapu

IPC: F25J1/00 ,  F25J1/02

CPC classification number: F25J1/0022 ,  F25J1/0037 ,  F25J1/0042 ,  F25J1/0207 ,  F25J1/0269 ,  F25J2200/38 ,  F25J2260/02 ,  F25J2260/42

Abstract: A method and apparatus for producing liquefied natural gas (LNG) from a natural gas stream. Heavy hydrocarbons are removed from the natural gas stream in a separator to generate a bottom stream and a separated natural gas stream, which is used as a coolant in a heat exchanger to generate a pretreated natural gas stream. The pretreated natural gas stream is compressed and cooled to form a chilled pretreated natural gas stream, part of which forms a recycle stream to exchange heat with the separated natural gas stream in the heat exchanger, thereby generating a cooled recycle stream. The temperature and pressure of the cooled recycle stream are reduced. The cooled recycle stream is then separated into an overhead stream and a reflux stream, which is directed to the separator. The chilled pretreated gas stream is liquefied to form LNG.

公开(公告)号：US12172122B2

公开(公告)日：2024-12-24

申请号：US18523318

申请日：2023-11-29

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Ananda Krishna Nagavarapu ,  Stephen Wright ,  Bennett D. Marshall ,  Brett L. Ryberg

IPC: B01D53/047 ,  B01D53/02 ,  B01D53/04 ,  C10L3/10

Abstract: Provided are apparatus and systems for performing a swing adsorption process. This swing adsorption process may involve performing dampening for fluctuations in the streams conducted away from the adsorbent bed unit. The process may be utilized for swing adsorption processes, such as rapid cycle TSA and/or rapid cycle PSA, which are utilized to remove one or more contaminants from a gaseous feed stream.