C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
48/25
C01B 3/38 (2006.01)
Patent
CA 1223736
ABSTRACT OF THE DISCLOSURE The present invention is an improved process for the production of ammonia synthesis gas by steam reforming a desulfurized high-hydrogen content feedstock gas by admixing steam therewith and partially reforming the resulting gas mixture in a tubular heat exchanger containing primary reforming catalyst while maintaining said gaseous mixture in indirect heat exchange with a secondary reformer effluent gas; recovering a partially reformed gas product from the tubular heat exchanger and secondarily reforming this gas in a secondary reformer in the presence of air, which is introduced to the secondary reformer in an amount sufficient to provide a hydrogen; nitrogen molar ratio of about 3:1 in the ammonia synthesis gas; and treating the reformed gas in a shift conversion zone to convert CO catalytically with steam to CO2 and hydrogen to form a gas which can be treated for removing CO and CO2 by absorption and methanation to produce the ammonia synthesis gas.
441376
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
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