The use of nitrogen from an air separation plant in carbon...

Details The use of nitrogen from an air separation plant in carbon... The use of nitrogen from an air separation plant in carbon...

B - Operations, Transporting

01

D

B01D 53/047 (2006.01) C01B 3/56 (2006.01) C21B 13/00 (2006.01) C21B 15/00 (2006.01) F25J 3/04 (2006.01)

Patent

CA 2186679

A cryogenic air separation unit (ASU) provides flows of oxygen and nitrogen. Theoxygen is used in a process such as COREX iron making or the partial oxidation of hydrocarbons, or in an oxycoal fuelled blast furnace, producing an off-gas containing useful components (H2 and CO) and carbon dioxide. The carbon dioxide is removed by pressure swing adsorption using nitrogen from the ASU as a regeneration gas and the purified off-gas becomes a feed gas to a further process such as production of iron by direct reduction of iron ore or the production of a NH3 making ammonia or is recycled into the first process as a feed gas.

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