公开(公告)号：US20240377128A1

公开(公告)日：2024-11-14

申请号：US18196793

申请日：2023-05-12

Applicant: ConocoPhillips Company

Inventor： Jinghua Chan ,  Robert L. Boulanger ,  Ying Zhang ,  Qi Ma

IPC: F25J3/02

Abstract: A method for obtaining a natural gas liquid (NGL) product from a liquefied natural gas (LNG) liquefaction facility including receiving a gas feed stream at an LNG facility having an NGL recovery unit integrated therein, cooling the gas feed stream via a demethanizer of the NGL recovery unit to separate a vapor from a liquid, transferring the vapor from the NGL recovery unit to an LNG liquefaction unit and transferring the liquid to a deethanizer within the NGL recovery unit for further cooling, and obtaining an ethane product and an NGL product from the cooled liquid.

公开(公告)号：US20230375261A1

公开(公告)日：2023-11-23

申请号：US18199549

申请日：2023-05-19

Applicant: ConocoPhillips Company

Inventor： Ying Zhang ,  Qi Ma ,  Wesley R. Qualls ,  Will T. James ,  Jinghua Chan

IPC: F25J1/00

CPC classification number: F25J1/0055 ,  F25J1/0022 ,  F25J1/004 ,  F25J2220/62

Abstract: Systems and methods for processing liquefied natural gas (LNG) can include an LNG production system with a methane refrigeration cycle downstream from an ethylene refrigeration cycle. The methane refrigeration cycle can be a closed loop methane refrigeration cycle that maintains a methane refrigerant separate from a natural gas feed, (e.g., compared to an open loop methane refrigeration cycle that extracts the methane refrigerant from the natural gas feed and recombines the methane refrigerant with the natural gas feed). The natural gas feed can be a medium or high nitrogen gas feed having a nitrogen content greater than 1.0% molarity.