EP 2507567 A2 20121010 - PROCESS AND APPARATUS FOR SEPARATION OF NITROGEN FROM LNG
Title (en)
PROCESS AND APPARATUS FOR SEPARATION OF NITROGEN FROM LNG
Title (de)
VERFAHREN UND VORRICHTUNG ZUR TRENNUNG VON STICKSTOFF AUS FLÜSSIGERDGAS
Title (fr)
PROCÉDÉ ET APPAREIL D'EXTRACTION D'AZOTE PRÉSENT DANS DU GNL
Publication
Application
Priority
- GB 0920947 A 20091130
- GB 2010051997 W 20101130
Abstract (en)
[origin: GB2462555A] A process and apparatus for the separation of nitrogen from a liquefied natural gas (LNG) feed 201 provides cooling of the feed and passing the feed to a fractionation column 206. From the column is withdrawn a nitrogen rich overhead vapour stream 213 and a nitrogen weak liquid stream 207. The overhead vapour stream is compressed via a compression system 219, cooled in a cooler 221, and partially condensed in heat exchange systems 214, 202, before expansion in an expansion turbine 204 and return to the fractionation column as reflux 205. Cooling of the overhead vapour stream is provided by exchange of heat between one or more streams 213, 240, from the fractionation column. The fractionation column may be provided with heat from a reboiler 202, which may be located internally or external to the column. The process and apparatus of the present invention provides an overhead vapour stream from the fractionation that has a composition able to be vented to atmosphere.
IPC 8 full level
F25J 3/00 (2006.01)
CPC (source: EP GB US)
F25J 3/0209 (2013.01 - EP GB US); F25J 3/0233 (2013.01 - EP US); F25J 3/0257 (2013.01 - EP GB US); F25J 2200/02 (2013.01 - EP US); F25J 2200/40 (2013.01 - EP US); F25J 2200/50 (2013.01 - EP US); F25J 2200/70 (2013.01 - EP US); F25J 2200/76 (2013.01 - EP US); F25J 2205/02 (2013.01 - EP US); F25J 2215/04 (2013.01 - EP US); F25J 2240/02 (2013.01 - EP US); F25J 2240/30 (2013.01 - EP US); F25J 2270/02 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
GB 0920947 D0 20100113; GB 2462555 A 20100217; GB 2462555 B 20110413; AU 2010322827 A1 20120621; AU 2016244250 A1 20161103; AU 2018204827 A1 20180719; EP 2507567 A2 20121010; EP 2507567 B1 20200624; US 2012285196 A1 20121115; WO 2011064605 A2 20110603; WO 2011064605 A3 20130404
DOCDB simple family (application)
GB 0920947 A 20091130; AU 2010322827 A 20101130; AU 2016244250 A 20161012; AU 2018204827 A 20180702; EP 10787542 A 20101130; GB 2010051997 W 20101130; US 201013511780 A 20101130