Method of recovering sulfur in a Claus process from vapors obtai

Details Method of recovering sulfur in a Claus process from vapors obtai Method of recovering sulfur in a Claus process from vapors obtai

1985-05-09

1986-11-04

Doll, John

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423237, 423574R, B01D 5334, B01D 5336, C01B 1704

Patent

active

046209670

ABSTRACT:
The ammonia, hydrogen cyanide, and hydrogen sulfide scrubbed out of crude coke oven gases are decomposed and combusted, and sulfur is recovered therefrom in a Claus process, while using preheated air and effecting the decomposition and oxidation at temperatures varying through 100.degree. C. at most, and keeping the temperature level of the entire process above 100.degree. C. and allowing the residual gases to cool below this temperature only after the separation of sulfur, and controlling the air supply to maintain the ratio of H.sub.2 S and SO.sub.2 in the process gases above 2.

REFERENCES:
patent: 3822337 (1974-07-01), Wunderlich et al.
patent: 3904370 (1975-09-01), Robison
patent: 4088744 (1978-05-01), Reed et al.
patent: 4124685 (1978-11-01), Tarhan et al.
patent: 4514375 (1985-04-01), Laufhutte

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