F - Mech Eng,Light,Heat,Weapons – 25 – J
Patent
F - Mech Eng,Light,Heat,Weapons
25
J
162/132
F25J 3/02 (2006.01) F25J 3/04 (2006.01)
Patent
CA 2037503
PATENT 211PUS04277 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. The critical step of the invention is the condensation a nitrogen stream in the top most reboiler/condenser located in the stripping section of the low pressure column to provide column reboil and the total condensation of a portion of the compressed feed air in the bottom most reboiler/condenser located in the bottom of the low pressure column.
Agrawal Rakesh
Woodward Donald Winston
Air Products And Chemicals Inc.
Mcfadden Fincham
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