EP 2005094 B1 20191030 - METHOD AND APPARATUS FOR PRE-HEATING LNG BOIL-OFF GAS TO AMBIENT TEMPERATURE PRIOR TO COMPRESSION IN A RELIQUEFACTION SYSTEM
Title (en)
METHOD AND APPARATUS FOR PRE-HEATING LNG BOIL-OFF GAS TO AMBIENT TEMPERATURE PRIOR TO COMPRESSION IN A RELIQUEFACTION SYSTEM
Title (de)
VERFAHREN UND VORRICHTUNG ZUM VORERWÄRMEN VON BOIL-OFF-FLÜSSIGERDGAS AUF UMGEBUNGSTEMPERATUR VOR DER KOMPRIMIERUNG IN EINEM VERFLÜSSIGUNGSSYSTEM
Title (fr)
PROCÉDÉ ET APPAREIL PERMETTANT DE PRÉCHAUFFER UN GAZ NATUREL LIQUÉFIÉ D'ÉVAPORATION À LA TEMPÉRATURE AMBIANTE AVANT SA COMPRESSION DANS UN SYSTÈME DE RELIQUÉFACTION
Publication
Application
Priority
- NO 2007000123 W 20070402
- NO 20061580 A 20060407
Abstract (en)
[origin: WO2007117148A1] A method and an apparatus of pre-heating LNG boil-off gas (BOG) stream (1) flowing from a reservoir (74) in a reliquefaction system, prior to compression (C11, C12, C13). The method comprises heat exchanging the BOG stream in a first heat exchanger (H10), against a second coolant stream (59) having a higher temperature than the BOG stream (1), where the second coolant stream (59) is obtained by selectively splitting a first coolant stream (56) into said second coolant stream (59) and a third coolant stream (57), said third coolant stream being flowed into a first coolant passage in a reliquefaction system cold box (H20), whereby the BOG has reached near-ambient temperatures prior to compression and the low temperature duty from the BOG is substantially preserved within the reliquefaction system, and thermal stresses in the cold box (H20) are reduced. Prior to the compression step, the BOG is pre-heated to substantially ambient temperatures, by heat exchanging (H10) the BOG with said coolant, said coolant prior to the heat exchange having a higher temperature than the BOG.
IPC 8 full level
F25J 1/00 (2006.01); F17C 13/00 (2006.01); F25J 1/02 (2006.01)
CPC (source: EP KR NO US)
F17C 13/00 (2013.01 - KR); F25J 1/00 (2013.01 - KR); F25J 1/0025 (2013.01 - EP NO US); F25J 1/005 (2013.01 - EP NO US); F25J 1/0072 (2013.01 - EP US); F25J 1/02 (2013.01 - KR NO); F25J 1/0204 (2013.01 - EP US); F25J 1/0265 (2013.01 - EP); F25J 1/0267 (2013.01 - US); F25J 1/0288 (2013.01 - EP US); F25J 2220/62 (2013.01 - EP US); F25J 2230/30 (2013.01 - EP US); F25J 2290/62 (2013.01 - EP US)
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 MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2007117148 A1 20071018; CN 101449124 A 20090603; CN 101449124 B 20120725; EP 2005094 A1 20081224; EP 2005094 A4 20180530; EP 2005094 B1 20191030; ES 2766767 T3 20200615; JP 2009533642 A 20090917; JP 5280351 B2 20130904; KR 101290032 B1 20130730; KR 20080113046 A 20081226; NO 20084544 L 20081028; NO 345489 B1 20210301; US 2009113929 A1 20090507
DOCDB simple family (application)
NO 2007000123 W 20070402; CN 200780018439 A 20070402; EP 07747584 A 20070402; ES 07747584 T 20070402; JP 2009504142 A 20070402; KR 20087024494 A 20070402; NO 20084544 A 20081028; US 29540307 A 20070402