Production of ammonia synthesis gas

Details Production of ammonia synthesis gas Production of ammonia synthesis gas

2002-05-30

2008-10-07

Langel, Wayne (Department: 1793)

Compositions

Gaseous compositions

Nitrogen and hydrogen containing

C252S376000, C423S359000, C423S650000, C423S651000, C423S652000

Reexamination Certificate

active

07431865

ABSTRACT:
Ammonia synthesis gas production having a shift reaction stage employing a copper-based catalyst wherein the air supplied to the process is passed through an absorber that removes sulfur and/or halide contaminants, is described. The absorber has a support carrying an absorbent for sulfur compounds and/or absorbent for halide compounds. The removal of the contaminants improves the lifetime e.g. copper-zinc low temperature shift catalysts.

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