Air separation

Details Air separation Air separation

F - Mech Eng,Light,Heat,Weapons

25

J

162/126, 60/28

F25J 3/04 (2006.01) C01B 3/36 (2006.01) F02C 6/10 (2006.01)

Patent

CA 2000489

ABSTRACT A method and apparatus for recovering work from a nitrogen stream, wherein the nitrogen is preheated via heat exchange with hot fluid from a chemical process, which process utilises the oxygen product of the air separation. Preferably at least a part of the expanded nitrogen is utilised to preheat at least one fluid reactant of the chemical process. The chemical process may be gasification or direct reduction of iron oxide, as well as the conversion of natural gas into synthesis gas.

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