Process for purifying metallurgical gases containing sulphurous

Details Process for purifying metallurgical gases containing sulphurous Process for purifying metallurgical gases containing sulphurous

1973-12-10

1976-08-10

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

423101, B01D 4700

Patent

active

039742547

ABSTRACT:
The present invention relates to a process for purifying metallurgical gases containing sulphuric anhydride by extracting mercury, using the sulphurous anhydride which accompanies the metallurgical gases as an oxidizing agent for the mercury, an additional contribution of sulphurous anhydride being made when the latter is deficient, and employing in addition an acid to facilitate the oxidization of the mercury and a soluble thiocyanate in order to complete the oxidation of the mercury.

REFERENCES:
patent: 3145080 (1964-08-01), Jockers et al.
patent: 3689217 (1972-09-01), Capaul et al.
patent: 3695838 (1972-10-01), Knepper et al.
patent: 3701651 (1972-10-01), Hack et al.
patent: 3826819 (1974-07-01), Orlandini et al.
patent: 3838190 (1974-09-01), Birke et al.
Sienko et al., Chemistry; McGraw-Hill Book Co., Inc., 1961, pp. 473, 474.

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