公开(公告)号：US09791209B2

公开(公告)日：2017-10-17

申请号：US14681255

申请日：2015-04-08

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Satish L. Gandhi ,  Jim L. Rockwell ,  Karl L. Herzog ,  David C. Vogel

IPC: F25J1/00 ,  F25J1/02

CPC classification number: F25J1/0022 ,  F25J1/004 ,  F25J1/0052 ,  F25J1/0082 ,  F25J1/0085 ,  F25J1/0087 ,  F25J1/0208 ,  F25J1/0209 ,  F25J1/021 ,  F25J1/0219 ,  F25J1/023 ,  F25J1/0264 ,  F25J1/0265 ,  F25J2210/04 ,  F25J2210/06 ,  F25J2220/62 ,  F25J2220/64 ,  F25J2245/02 ,  F25J2290/34

Abstract: A process of liquefying a natural gas stream in a liquefied natural gas facility is provided. The process includes cooling the natural gas stream in a first refrigeration cycle to produce a cooled natural gas stream. The process also includes cooling the cooled natural gas stream in a first chiller of a second refrigeration cycle, the cooled natural gas stream exiting the first chiller at a first pressure. The process further includes cooling the cooled natural gas stream in a first core of a second chiller of the second refrigeration cycle. The process yet further includes cooling a refrigerant of a refrigerant recycle stream separate from the cooled natural gas stream in a second core of the second chiller of the second refrigeration cycle, wherein the refrigerant recycle stream enters the second chiller at a second pressure that is lower than the first pressure of the cooled natural gas stream.