Process for air separation by cryogenic distillation

Details Process for air separation by cryogenic distillation Process for air separation by cryogenic distillation

F - Mech Eng,Light,Heat,Weapons

25

J

F25J 3/04 (2006.01) F25J 5/00 (2006.01)

Patent

CA 2297475

In a process for separating air in a plant comprising at least two columns (1, 3), some of the air (100) at an intermediate pressure is cooled in at least one passage of a heat-exchange system which is or are regenerated by a gas from the plant (17, 21) which may contain at least 50% oxygen. The rest of the air at the medium pressure (200) is either purified outside the heat-exchange system or sent to a passage which is purified in the same way.

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