公开(公告)号：US20200370824A1

公开(公告)日：2020-11-26

申请号：US16421138

申请日：2019-05-23

Applicant: Fluor Technologies Corporation

Inventor： John MAK ,  Jacob THOMAS ,  Dhirav PATEL ,  Curt GRAHAM ,  Irene ZHANG

IPC: F25J3/02

Abstract: A method for removing heavy hydrocarbons from a feed gas by: feeding, into an absorber, a top reflux stream and a second reflux stream below the top reflux stream, wherein the absorber produces an absorber bottom product stream and an absorber overhead product stream; depressurizing and feeding the absorber bottom product stream to a stripper to produce a stripper bottom product stream and a stripper overhead product stream; cooling and feeding a portion of the absorber overhead product stream back to the absorber as the top reflux stream; and pressurizing and feeding the stripper overhead product stream back to the absorber as the second reflux stream. Systems for carrying out the method are also provided.

公开(公告)号：US20230349633A1

公开(公告)日：2023-11-02

申请号：US18348557

申请日：2023-07-07

Applicant: FLUOR TECHNOLOGIES CORPORATION

Inventor： John MAK ,  Sabrina DEVONE ,  James SHIH ,  Curt GRAHAM

IPC: C10G5/04 ,  F25J3/02 ,  C10G5/06

CPC classification number: F25J3/0238 ,  C10G5/04 ,  C10G5/06 ,  F25J3/0209 ,  F25J3/0233 ,  C10G2300/1025 ,  C10G2300/4056 ,  F25J2200/02 ,  F25J2200/30 ,  F25J2200/76 ,  F25J2205/04 ,  F25J2205/60 ,  F25J2215/62 ,  F25J2290/80

Abstract: A natural gas liquid plant is retrofitted with a bolt-on unit that includes an absorber that is coupled to an existing demethanizer by refrigeration produced at least in part by compression and expansion of the residue gas, wherein ethane recovery can be increased to at least 99% and propane recovery is at least 99%, and where a lower ethane recovery of 96% is required, the bolt-on unit does not require the absorber, which could be optimum solution for revamping an existing facility. Contemplated configurations are especially advantageous to be used as bolt-on upgrades to existing plants.