Global Patent Index - EP 1860393 B1

EP 1860393 B1 2009-02-18 - Method and apparatus for the reliquefaction of a vapour

Title (en)

Method and apparatus for the reliquefaction of a vapour

Title (de)

Verfahren und Vorrichtung zur Rückverflüssigung eines Gasstromes

Title (fr)

Procédé et dispositif pour reliquéfier un courant de gaz

Publication

EP 1860393 B1 (EN)

Application

EP 06352012 A

Priority

EP 06352012 A

Abstract (en)

[origin: EP1860393A1] Vapour boiled off from a liquefied natural gas storage tank (10) is compressed in vapour compression stages (40) and (42). The resulting compressed vapour is condensed in a condenser (46) and the condensate returned to the tank (10). The condenser (46) is cooled by means of a working fluid, for example nitrogen, flowing in a Brayton cycle (60). The Brayton cycle includes a heat exchanger (86) which removes heat of compression from the compressed natural gas vapour upstream of its passage through the condenser (46). In addition a part of the working fluid is withdrawn from a region of the Brayton cycle (60) intermediate the working fluid outlet from the condenser (46) and the working fluid inlet to the heat exchanger (86) and the withdrawn working fluid flows through another heat exchanger (88) in which it removes heat of compression from the natural gas vapour intermediate the compression stage (40) and the compression stage (42). The withdrawn working fluid is returned to the Brayton cycle (60).

IPC 8 full level (invention and additional information)

F25J 1/02 (2006.01); F17C 9/00 (2006.01)

CPC (invention and additional information)

F25J 1/0204 (2013.01); F25J 1/0025 (2013.01); F25J 1/0045 (2013.01); F25J 1/005 (2013.01); F25J 1/0072 (2013.01); F25J 1/0208 (2013.01); F25J 1/0277 (2013.01); F25J 1/0288 (2013.01); F17C 2221/033 (2013.01); F17C 2223/0161 (2013.01); F17C 2223/033 (2013.01); F17C 2250/0439 (2013.01); F17C 2265/03 (2013.01); F17C 2265/034 (2013.01); F17C 2265/037 (2013.01); F17C 2270/0105 (2013.01); F25J 2205/30 (2013.01); F25J 2220/62 (2013.01); F25J 2230/04 (2013.01); F25J 2230/08 (2013.01); F25J 2230/60 (2013.01); F25J 2245/02 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DOCDB simple family

EP 1860393 A1 20071128; EP 1860393 B1 20090218; AT 423298 T 20090315; CN 101495828 A 20090729; CN 101495828 B 20111019; DE 602006005229 D1 20090402; EP 2024698 A2 20090218; JP 2009538405 A 20091105; JP 5241707 B2 20130717; KR 101419069 B1 20140711; KR 20090020574 A 20090226; US 2010000253 A1 20100107; WO 2007144774 A2 20071221; WO 2007144774 A3 20081016