Refrigeration – Cryogenic treatment of gas or gas mixture – Liquefaction
Reexamination Certificate
2007-11-27
2007-11-27
Doerrler, William C (Department: 3744)
Refrigeration
Cryogenic treatment of gas or gas mixture
Liquefaction
C062S047100, C048S127100, C048S127300, C048S127900
Reexamination Certificate
active
11006941
ABSTRACT:
Disclosed are methods and systems for vaporization of liquefied natural gas (LNG) that employ a condensing gas stream to adjust the gross heating value (GHV) of the LNG such that, upon vaporization, a natural gas product is obtained that meets pipeline or other commercial specifications. The condensing gas can be air, nitrogen, or in embodiments, NGLs such as ethane, propane, or butane, or other combustible hydrocarbon such as dimethyl ether (DME) depending on a desired change in GHV. In some embodiments, the methods and systems employ an integrated air separation plant for generation of nitrogen used as a condensing gas, wherein a cool stream of a heat transfer medium, such as water, ethylene glycol, other common heat transfer fluids, or mixtures thereof, obtained by heat transfer during vaporization of the LNG is used to pre-cool an air feed to the air separation plant, or to cool other process streams associated therewith.
REFERENCES:
patent: 3407052 (1968-10-01), Huntress et al.
patent: 3419369 (1968-12-01), Kelley
patent: 3527585 (1970-09-01), Ungerleider
patent: 3837821 (1974-09-01), Buffiere et al.
patent: 5590535 (1997-01-01), Rhoades
patent: 6449983 (2002-09-01), Pozivil
patent: 6470706 (2002-10-01), Engdahl
patent: 6564579 (2003-05-01), McCartney
patent: 6745576 (2004-06-01), Granger
patent: 2005/0204625 (2005-09-01), Briscoe et al.
patent: 0525430 (1972-07-01), None
patent: 2765238 (1998-12-01), None
patent: 1280342 (1972-07-01), None
Rogers, “Gas Interchangeability and its Effects on U.S. Import Plans”, Pipeline & Gas Journal, Aug. 2003, pp. 19-28.
Rogers, “Long-Term Solution Needed To Embrace Imports With Pipeline Gas”, Pipeline & Gas Journal, Sep. 2003, pp. 14-22.
Ward, Patrick B., U.S. Appl. No. 10/805,943, filed Mar. 22, 2004.
Lemmers et al., “A New Recondenser”, LNG Journal, pp. 24-27, Jul./Aug. 1999.
BP Corporation North America Inc.
Doerrler William C
Wood John L.
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