Ammonia production process

Details Ammonia production process Ammonia production process

C - Chemistry, Metallurgy

01

C

23/220

C01C 1/04 (2006.01) C01B 3/02 (2006.01)

Patent

CA 1210222

Abstract Production of ammonia by the sequence of steam hydro- carbon primary reforming, secondary reforming with air, carbon monoxide shift conversion, carbon oxides removal and catalytic ammonia synthesis is improved by using oxygen enriched air at secondary reforming and/or by operating the reforming steps so that 5 - 15% by carbon atoms of the starting hydrocarbon is not reformed but is purged from the synthesis. The oxygen enriched air can be the by-product of a simple air separation plant producing nitrogen, and the nitrogen can be used to air start-up or shut-down of the process or to keep the process plant in a hot stand-by condition.

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