EP 2126501 A2 20091202 - NITROGEN PRODUCTION METHOD AND APPARATUS
Title (en)
NITROGEN PRODUCTION METHOD AND APPARATUS
Title (de)
VERFAHREN UND VORRICHTUNG ZUR STICKSTOFFERZEUGUNG
Title (fr)
PROCÉDÉ ET APPAREIL DE PRODUCTION D'AZOTE
Publication
Application
Priority
- US 2008056239 W 20080307
- US 71649307 A 20070309
Abstract (en)
[origin: US2008216511A1] Method and apparatus for distilling nitrogen from a gaseous mixture containing nitrogen and oxygen. Oxygen-enriched bottoms liquid is partially vaporized within a first heat exchanger to condense part of the column overhead to produce reflux. Thereafter, the partially vaporized oxygen-enriched liquid is phase separated. A second oxygen-enriched liquid stream composed of at least part of the liquid phase is used to substantially condense all or part of the vapor stream derived from said phase separation, thereby to form a nitrogen-rich liquid stream. At least part of the nitrogen-rich liquid stream is reintroduced into the column to increase nitrogen recovery. The second oxygen-enriched liquid stream is then used to condense a second part of the reflux for the column.
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP US)
F25J 3/04284 (2013.01 - EP US); F25J 3/044 (2013.01 - EP US); F25J 2200/72 (2013.01 - EP US); F25J 2205/02 (2013.01 - EP US); F25J 2230/52 (2013.01 - EP US); F25J 2235/52 (2013.01 - EP US); F25J 2245/02 (2013.01 - EP US); F25J 2250/10 (2013.01 - EP US); F25J 2250/20 (2013.01 - EP US); F25J 2250/52 (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 MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2008216511 A1 20080911; AT E488739 T1 20101215; CN 101285640 A 20081015; CN 101285640 B 20120711; DE 602008003541 D1 20101230; EP 2126501 A2 20091202; EP 2126501 B1 20101117; WO 2008112556 A2 20080918; WO 2008112556 A3 20081224
DOCDB simple family (application)
US 71649307 A 20070309; AT 08731689 T 20080307; CN 200810109272 A 20080307; DE 602008003541 T 20080307; EP 08731689 A 20080307; US 2008056239 W 20080307