公开(公告)号：US11598578B2

公开(公告)日：2023-03-07

申请号：US15508212

申请日：2014-09-02

Applicant: GE Oil & Gas, Inc.

Inventor： David Allen Kennedy ,  Thomas Lyons ,  Christopher Yount

IPC: F25J1/00 ,  F25J1/02

Abstract: A plant and process are used to liquefy and purify a high pressure ethane feed stream. The plant includes a cascaded refrigeration system that refrigerates the ethane feed stream. The refrigeration system includes a propylene circuit, an ethylene circuit and a mixed refrigerant circuit. The mixed refrigerant circuit includes a refrigerant that includes ethane and methane. The plant includes a demethanizer that is configured to remove methane and other natural gas liquids from the refrigerated ethane stream.