EP 2347206 B1 20150909 - METHOD FOR REMOVING NITROGEN
Title (en)
METHOD FOR REMOVING NITROGEN
Title (de)
VERFAHREN ZUM ABTRENNEN VON STICKSTOFF
Title (fr)
PROCÉDÉ DE SÉPARATION D'AZOTE
Publication
Application
Priority
- EP 2009007879 W 20091103
- DE 102008056196 A 20081106
Abstract (en)
[origin: WO2010051971A2] The invention relates to a method for removing a nitrogen-rich fraction from a feed fraction which substantially contains nitrogen and hydrocarbons. According to said method, the feed fraction is subjected to separation into a nitrogen-rich and a methane-rich fraction by rectification, the methane-rich fraction being evaporated and then superheated at as high a pressure as possible relative to the feed fraction to be cooled for refrigeration and the nitrogen-rich fraction being compressed at least temporarily and/or at least partially and being fed to the rectification reaction as a return flow. At least one partial flow (16) of the compressed (C) nitrogen-rich fraction (9') is at least temporarily expanded (f) once condensation (E1) is completed and is at least partially, preferably completely evaporated (E1) for refrigeration.
IPC 8 full level
F25J 3/02 (2006.01)
CPC (source: EP US)
F25J 3/0209 (2013.01 - EP US); F25J 3/0233 (2013.01 - EP US); F25J 3/0257 (2013.01 - EP US); F25J 2200/06 (2013.01 - EP US); F25J 2200/72 (2013.01 - EP US); F25J 2200/76 (2013.01 - EP US); F25J 2200/78 (2013.01 - EP US); F25J 2215/04 (2013.01 - EP US); F25J 2235/60 (2013.01 - EP US); F25J 2250/02 (2013.01 - EP US); F25J 2270/02 (2013.01 - EP US); F25J 2270/04 (2013.01 - EP US); F25J 2270/42 (2013.01 - EP US); F25J 2280/02 (2013.01 - EP US)
Designated contracting state (EPC)
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 SE SI SK SM TR
DOCDB simple family (publication)
DE 102008056196 A1 20100512; AU 2009313087 A1 20100514; AU 2009313087 B2 20151210; EP 2347206 A2 20110727; EP 2347206 B1 20150909; MX 2011004358 A 20110523; PL 2347206 T3 20160229; RU 2011122689 A 20121220; RU 2514804 C2 20140510; US 2011209498 A1 20110901; WO 2010051971 A2 20100514; WO 2010051971 A3 20120830
DOCDB simple family (application)
DE 102008056196 A 20081106; AU 2009313087 A 20091103; EP 09759662 A 20091103; EP 2009007879 W 20091103; MX 2011004358 A 20091103; PL 09759662 T 20091103; RU 2011122689 A 20091103; US 200913127900 A 20091103