公开(公告)号：US20180347901A1

公开(公告)日：2018-12-06

申请号：US15779634

申请日：2016-12-01

Applicant: SHELL OIL COMPANY

Inventor： Thijs GROENENDIJK ,  Raimo Edwin Gregor POORTE ,  Nirupa RAGHAVAN ,  Michiel Gijsbert VAN AKEN

IPC: F25J3/06 ,  F25J1/00 ,  F25J1/02

CPC classification number: F25J1/0022 ,  F25J1/0035 ,  F25J1/0037 ,  F25J1/004 ,  F25J1/0202 ,  F25J3/061 ,  F25J3/0635 ,  F25J3/067 ,  F25J2205/10 ,  F25J2205/20 ,  F25J2205/30 ,  F25J2205/90 ,  F25J2210/04 ,  F25J2215/04 ,  F25J2220/66 ,  F25J2230/30 ,  F25J2230/60 ,  F25J2235/60 ,  F25J2235/80 ,  F25J2240/02 ,  F25J2245/02 ,  F25J2245/90 ,  F25J2270/04 ,  F25J2270/88 ,  Y02C10/12

Abstract: The present invention provides a method of liquefying a contaminated hydrocarbon-containing gas stream: (a) providing a CO2 contaminated hydrocarbon-containing gas stream (20); (b) cooling the contaminated hydrocarbon-containing gas stream to obtain a partially liquefied stream (70); (c) separating the partially liquefied stream obtaining a liquid stream (90); (d) cooling the liquid stream (90) in a direct contact heat exchanger (200) obtaining a multiphase stream (201) containing at least a liquid phase and a solid CO2 phase; (e) separating the multiphase stream in a solid-liquid separator (202) obtaining a CO2 depleted liquid stream (141); (f) passing the CO2 depleted liquid stream (141) to a further cooling, pressure reduction and separation stage to generate a further CO2 enriched slurry stream (206); (g) passing at least part of the further CO2 enriched slurry stream (206) to the direct contact heat exchanger (200) to provide cooling duty to and mix with the liquid stream (90).

公开(公告)号：US20190049174A1

公开(公告)日：2019-02-14

申请号：US16086491

申请日：2017-03-20

Applicant: SHELL OIL COMPANY

Inventor： Thijs GROENENDIJK ,  Carlos ARNAIZ DEL POZO

IPC: F25J1/00 ,  F25J1/02

Abstract: The invention relates to a method of liquefying a natural gas feed stream. A first split-off stream from a compressed process stream is expanded. A remainder of the compressed process stream is cooled against the expanded first split-off stream. A second split-off stream from the precooled process stream is expanded, while a remainder of the precooled compressed process stream is cooled against a vapour stream obtained from the second split-off stream. The further cooled process stream is expanded, thereby obtaining a liquid natural gas stream. The first split-off stream and the vapour stream are passed to a recompression stage to obtain a recycle stream to be combined with a natural gas feed stream to form the process stream.