Process for the production of ammonia from natural gas

Details Process for the production of ammonia from natural gas Process for the production of ammonia from natural gas

C - Chemistry, Metallurgy

01

B

23/220

C01B 3/02 (2006.01) C01B 3/38 (2006.01)

Patent

CA 1334784

The invention relates to a process for the production of ammonia from natural gas, liquified petroleum gas, naphtha or hydrogen-bearing gases, using a combined autothermic reforming process and feeding a separate oxygen stream and a separate stream of pre-heated air to the system. The aim of the inven- tion is to design an economical and simple configuration which reduces the oxygen requirement substantially. The aim of the invention is achieved by implementing various process steps some of which are already known and by combining them in such a manner that, in addition to the atmospheric oxygen, a separate oxygen stream with a min. O2 concentration of 50% is admixed, the concentrated O2 stream being pre-heated to a max. temperature of 250°C and the atmos- pheric air stream to approx. 450 to 900°C, and the H2/N2 ratio required at the outlet of the reforming section being adjusted with the aid of the atmospheric air stream and the make-up oxygen stream.

569167

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