Conversion of ammonia into hydrogen and nitrogen by reaction wit

Details Conversion of ammonia into hydrogen and nitrogen by reaction wit Conversion of ammonia into hydrogen and nitrogen by reaction wit

1976-05-11

1977-06-28

Vertiz, O. R.

Chemistry of inorganic compounds

Nitrogen or compound thereof

423238, 423648R, C01B 2100, C01B 100, C01B 400, C01B 600

Patent

active

040326187

ABSTRACT:
A method is provided for removing ammonia from the sour water stream of a coal gasification process. The basic steps comprise stripping the ammonia from the sour water; heating the stripped ammonia to a temperature from between 400.degree. to 1,000.degree. F; passing the gaseous ammonia through a reactor containing a sulfided catalyst to produce elemental hydrogen and nitrogen; and scrubbing the reaction product to obtain an ammonia-free gas. The residual equilibrium ammonia produced by the reactor is recycled into the stripper. The ammonia-free gas may be advantageously treated in a Claus process to recover elemental sulfur. Iron sulfide or cobalt molybdenum sulfide catalysts are used.

REFERENCES:
patent: 3540189 (1970-11-01), Siewers et al.
patent: 3773912 (1973-11-01), Spangler
patent: 3798308 (1974-03-01), Tatterson
patent: 3819816 (1974-06-01), Wunderlich et al.
patent: 3915655 (1975-10-01), Grulich et al.
patent: 3970743 (1976-07-01), Beavon

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