EP 2307835 B1 20120307 - NITROGEN LIQUEFIER RETROFIT FOR AN AIR SEPARATION PLANT
Title (en)
NITROGEN LIQUEFIER RETROFIT FOR AN AIR SEPARATION PLANT
Title (de)
STICKSTOFFVERFLÜSSIGERNACHRÜSTUNG FÜR EINE LUFTTRENNANLAGE
Title (fr)
MONTAGE A POSTERIORI D'UN LIQUÉFACTEUR D'AZOTE DANS UNE INSTALLATION DE SÉPARATION D'AIR
Publication
Application
Priority
- US 2009043558 W 20090512
- US 16426908 A 20080630
Abstract (en)
[origin: US2009320520A1] A method is disclosed for increasing liquid production involving retrofitting an existing air separation plant with a nitrogen liquefier. The nitrogen liquefier liquefies a nitrogen-rich vapor stream withdrawn from the higher pressure column to return a nitrogen-rich liquid stream to the higher pressure column. This increases liquid nitrogen reflux to the higher pressure column to in turn increase the production of liquid oxygen containing column bottoms of the higher pressure column and therefore, the production of oxygen-rich liquid in the lower pressure column. The increased production of the oxygen-rich liquid allows a liquid oxygen product to be taken at an increased rate or for the liquid oxygen product to be taken in the first instance, if the plant is not designed to produce such a product. Also liquid nitrogen and argon products can be produced at an increased rate as a result of the retrofit.
IPC 8 full level
F25J 3/04 (2006.01)
CPC (source: EP US)
F25J 3/04224 (2013.01 - EP US); F25J 3/04345 (2013.01 - EP US); F25J 3/04351 (2013.01 - EP US); F25J 3/04357 (2013.01 - EP US); F25J 3/04393 (2013.01 - EP US); F25J 3/04412 (2013.01 - US); F25J 3/04678 (2013.01 - US); F25J 3/04703 (2013.01 - US); F25J 3/04715 (2013.01 - EP US); F25J 3/04878 (2013.01 - EP); F25J 3/0489 (2013.01 - EP US); F25J 3/04969 (2013.01 - EP US); F25J 2200/06 (2013.01 - EP); F25J 2200/34 (2013.01 - EP US); F25J 2215/56 (2013.01 - EP US); F25J 2235/58 (2013.01 - EP); F25J 2290/10 (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 TR
DOCDB simple family (publication)
US 2009320520 A1 20091231; AT E548620 T1 20120315; BR PI0914327 A2 20151013; CN 101619917 A 20100106; EP 2307835 A2 20110413; EP 2307835 B1 20120307; ES 2383781 T3 20120626; KR 20110026435 A 20110315; MX 2010013697 A 20101221; WO 2010002500 A2 20100107; WO 2010002500 A3 20100930
DOCDB simple family (application)
US 16426908 A 20080630; AT 09773952 T 20090512; BR PI0914327 A 20090512; CN 200910151331 A 20090630; EP 09773952 A 20090512; ES 09773952 T 20090512; KR 20107029373 A 20090512; MX 2010013697 A 20090512; US 2009043558 W 20090512