(19)
(11) EP 2 307 835 A2

(12)

(88) Date of publication A3:
30.09.2010

(43) Date of publication:
13.04.2011 Bulletin 2011/15

(21) Application number: 09773952.8

(22) Date of filing: 12.05.2009
(51) International Patent Classification (IPC): 
F25J 3/04(2006.01)
(86) International application number:
PCT/US2009/043558
(87) International publication number:
WO 2010/002500 (07.01.2010 Gazette 2010/01)
(84) Designated Contracting States:
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
Designated Extension States:
AL BA RS

(30) Priority: 30.06.2008 US 164269

(71) Applicant: Praxair Technology, Inc.
Danbury, CT 06810 (US)

(72) Inventors:
  • PARSNICK, David, Ross
    Amherst NY 14226 (US)
  • SKARE, Todd, Alan
    The Woodlands TX 77382 (US)

(74) Representative: Schwan - Schwan - Schorer 
Patentanwälte European Patent Attorneys Bauerstrasse 22
80796 München
80796 München (DE)

   


(54) NITROGEN LIQUEFIER RETROFIT FOR AN AIR SEPARATION PLANT