公开(公告)号：US20250066273A1

公开(公告)日：2025-02-27

申请号：US18455294

申请日：2023-08-24

Applicant: UOP LLC

Inventor： Ian G. Horn ,  Andrew B. Chin ,  Ernest J. Boehm ,  Allen Erickson ,  Sudipta Ghosh

IPC: C07C7/04 ,  C07C7/00 ,  C07C7/09

Abstract: A process for separating an olefin stream from a methane stream is disclosed. The process comprises providing an olefin stream comprising C2 and/or C3 olefins. The olefin stream is cooled in a heat exchanger with a mixed refrigerant stream to provide a cooled olefin stream. The cooled olefin stream is passed to a demethanizer column operating at an overhead pressure of about 344 kPa gauge (50 psig) to about 2069 kPa gauge (300 psig). The cooled olefin stream is fractionated in the demethanizer column to provide a demethanizer column overhead vapor stream and a demethanizer column bottoms liquid stream. The process provides an improved recovery/yield of olefins and also optimizes the cooling and/or heating of other process streams.