公开(公告)号：US11662141B2

公开(公告)日：2023-05-30

申请号：US16861811

申请日：2020-04-29

Applicant: ConocoPhillips Company

Inventor： Michael J. Calderon ,  Dale L. Embry ,  Paul R. Davies ,  Attilio J. Praderio

IPC: F25J3/02

CPC classification number: F25J3/0295 ,  F25J3/0209 ,  F25J3/0247 ,  F25J2200/10 ,  F25J2210/04 ,  F25J2220/64

Abstract: Implementations described and claimed herein provide systems and methods for processing liquefied natural gas (LNG). In one implementation, a solvent is injected into a feed of natural gas at a solvent injection point. A mixed feed is produced from a dispersal of the solvent into the feed of natural gas. The mixed feed contains heavy components. A chilled feed is produced by chilling the mixed feed. The chilled feed includes a vapor and a condensed liquid. The condensed liquid contains a fouling portion of the heavy components condensed by the solvent during chilling. The liquid containing the fouling portion of the heavy components is separated from the vapor. The vapor is directed into a feed chiller heat exchanger following separation of the liquid containing the fouling portion of the heavy components from the vapor, such that the vapor being directed into feed chiller heat exchanger is free of freezing components.

公开(公告)号：US11320197B2

公开(公告)日：2022-05-03

申请号：US15925873

申请日：2018-03-20

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Dale L. Embry ,  Paul R. Davies ,  Qi Ma ,  David W. Larkin ,  Michael J. Calderon

IPC: F25J3/02 ,  C10L3/10 ,  C10G5/06 ,  C10G5/04

Abstract: The invention relates to a system, method and apparatus for removing heavies from natural gas. Natural gas and an external rich reflux gas feed are processed in a single column refluxed absorber. A bottoms stream is routed to a first heat exchanger and then to a stabilizer column where an overhead stream from the stabilizer column is routed through a condenser for partial separation into an overhead stream. A rich solvent may be introduced to the stabilizer column. The overhead stream is routed through a condenser for partial separation into a stabilizer reflux and a second overhead stream lights. The second overhead stream lights is routed to a heat exchanger and then routed to a partial condenser where the stream is separated into a heavies rich reflux stream, a distillate stream and heavies treated natural gas stream. The rich reflux is routed through a heat exchanger and the rich reflux is pumped to the single column refluxed absorber to be introduced into the single column refluxed absorber as the external rich reflux gas feed.

公开(公告)号：US20210095918A1

公开(公告)日：2021-04-01

申请号：US17060586

申请日：2020-10-01

Applicant: ConocoPhillips Company

Inventor： Michael J. Calderon ,  Will T. James ,  Dale L. Embry ,  Jinghua Chan ,  Qi Ma

IPC: F25J1/00 ,  F25J1/02 ,  F25J3/02 ,  F25J3/08

Abstract: Disclosed herein are systems and processes for removing heavies during the liquefaction of a natural gas. The processes include dissolving the heavies in the natural gas by adding external natural gas liquid (NGL), followed by a staged removal of the natural gas liquid (NGL) and dissolved heavies.