F - Mech Eng,Light,Heat,Weapons – 25 – J
Patent
F - Mech Eng,Light,Heat,Weapons
25
J
F25J 3/06 (2006.01) F25J 3/04 (2006.01)
Patent
CA 2051076
ABSTRACT The present invention is a cryogenic process for the production of nitrogen by distilling air in a double column distillation system comprising a high pressure column and a low pressure column associated functionally with an extra high pressure (EHP) distillation column for added nitrogen production. The critical step of the invention is the dual pathway condensation of nitrogen streams in two reboiler/condensers located in the stripping section of the low pressure column to provide condensed high pressure and EHP nitrogen streams that provides liquid reflux to the high pressure columns.
Air Products And Chemicals Inc.
Mcfadden Fincham
LandOfFree
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