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US7550032: Method for removing contaminating gaseous components from a natural gas stream

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Filing Information

Inventor(s) Bert Brouwers · Michael Zvi Golombok · Ralph Van Wissen ·
Assignee(s) Shell Oil Company ·
Attorney/Agent(s) William E. Hickman ·
Primary Examiner Robert A Hopkins ·
Application Number US11355620
Filing date 02/16/2006
Issue date 06/23/2009
Prior Publication Data
Predicted expiration date 09/15/2027
Patent term adjustment 576
U.S. Classifications 951/41  · 554/4  · 554/  · 962/70  ·
International Classifications B01D4512  ·
Kind CodeB2
29 Claims, 3 Drawings


Abstract

A method for removing contaminating gaseous components, such as CO2 and/or H2S, from a contaminated natural gas stream. The method includes the steps of expanding the contaminated gas stream in an expander to form an expanded gas stream; allowing at least part of the contaminants in the expanded gas stream to liquefy to form a dispersion of a contaminants enriched liquid phase in a contaminants depleted gaseous phase; and separating at least part of the contaminants enriched liquid phase from the contaminants depleted gaseous phase in one or more centrifugal separators.

Independent Claims | See all claims (29)

  1. 1. A method for removing contaminating gaseous components from a contaminated natural gas stream, the method comprising: expanding the contaminated gas stream in an expander to obtain an expanded gas stream; allowing at least part of the contaminants in the expanded gas stream to liquefy to form a dispersion of a contaminants enriched liquid phase in a contaminants depleted gaseous phase; and separating at least part of the contaminants enriched liquid phase from the contaminants depleted gaseous phase in a centrifugal separator which comprises a bundle of parallel channels that are arranged within a spinning tube parallel to an axis of rotation of the spinning tube; wherein the centrifugal separator is spun by introducing a swirling gas stream into the spinning tube.
  2. 19. A method for removing contaminating gaseous components from a contaminated natural gas stream, the method comprising: expanding the contaminated gas stream in an expander to obtain an expanded gas stream; allowing at least part of the contaminants in the expanded gas stream to liquefy to form a dispersion of a contaminants enriched liquid phase in a contaminants depleted gaseous phase; and separating at least part of the contaminants enriched liquid phase from the contaminants depleted gaseous phase in a centrifugal separator which comprises a bundle of parallel channels that are arranged within a spinning tube parallel to an axis of rotation of the spinning tube; wherein the separated contaminants depleted gaseous phase is discharged via a central fluid outlet of the centrifugal separator and supplied to a second centrifugal separator which also comprises a bundle of parallel channels that are arranged within a spinning tube substantially parallel to an axis of rotation of the spinning tube.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US3775988 FEKETE L Fekete Dec 1973
US4182480 Ultra Centrifuge Nederland N.V. Theyse et al. Jan 1980
US4257794 Shirokov et al. Mar 1981
US4265648 Wedege May 1981
US4284234 REKANT URIEL Rekant Aug 1981
US4626237 Exxon Production Research Co. Galloway, Jr. Dec 1986
US4994097 B. B. Romico B.V. I.O. Brouwers Feb 1991
US5073177 B.B. Romico B.V. i.o. Brouwers Dec 1991
US5133190 Abdelmalek Jul 1992
US5221300 U.S. Philips Corp. Hoogland et al. Jun 1993
US5483801 Ezarc Pty., Ltd. Craze Jan 1996
US5565180 Turbotak Inc. Spink Oct 1996
US5667543 Romico Hold A.V.V. Brouwers Sep 1997
US5902224 Fuge Systems, Inc. Bloom May 1999
US6592654* Cryogenic Group Inc. Brown Jul 2003

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
DE2850019ORSZAGOS KOOLAJ GAZIPARIMay 1980
DE19621908FILTAN GMBHDec 1997
EP0286160B B Romico Beheer B.V.Mar 1988
EP286160May 1990
EP0693958ROMICO HOLD A.V.V.Jan 1998
EP1017465SHELL INTERNATIONALE RESEARCHNov 2002
JP1135516May 1989
WO199423823Oct 1994
WO199744117Nov 1997
WO2005118110ROMICO HOLD A.V.V.Dec 2005
WO2006087332SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.Aug 2006
* cited by examiner

Other Publications

“Phase separation in centrifugal fields with emphasis on the rotational particle separator” by J.J.H. Brouwers; Experimental Thermal and Fluid Science 26 (2002), pp. 325-334.
European Search Report dated Jul. 29, 2005, Application No. 051011989.9
J. J. H. Brouwers. “Phase Separation in Centrifugal Fields with Emphasis on the Rotational Particle Separator”, Experimental Thermal and Fluid Science. Elsevier. pp. 325-334, May 2001.
J. J. H. Brouwers. “Drilling & Production—Novel Centrifugal Process Removes Gas Contaminants”, Oil & Gas Journal, pp. 37-41, Nov. 2006.

Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
US7811343 Alberta Research Council, Inc. Peter Toma Oct 2010
US8128732 Romico Hold A.V.V. Reinoud Hoijtink et al. Mar 2012

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