Method for producing ammonia and hydrogen sulfide

Details Method for producing ammonia and hydrogen sulfide Method for producing ammonia and hydrogen sulfide

1979-06-20

1980-11-04

Peters, G. O.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

423567R, 423571, C01B 1704

Patent

active

042319960

ABSTRACT:
A method for producing ammonia and hydrogen sulfide in a molar ratio (NH.sub.3 /H.sub.2 S) from about 2.8 to about 3.7 from an aqueous ammonium thiosulfate solution by a method consisting essentially of: (a) contacting the aqueous ammonium thiosulfate solution with hydrogen sulfide at a temperature from about 260.degree. to about 360.degree. F. (125.degree. to 182.degree. C.) at a pressure greater than 100 psig to react at least about 70 percent of the thiosulfate to produce an aqueous solution containing ammonium polysulfide; and (b) heating the resulting aqueous ammonium polysulfide solution to produce ammonia and hydrogen sulfide in a molar ratio (NH.sub.3 /H.sub.2 S) from about 2.8 to about 3.7 and sulfur.

REFERENCES:
patent: 3536618 (1970-10-01), Urban et al.
patent: 3627470 (1971-12-01), Hamblin
patent: 3728439 (1973-04-01), Urban
patent: 3773662 (1973-11-01), Urban

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