Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon dioxide or hydrogen sulfide component
Patent
1975-10-10
1977-09-20
Thomas, Earl C.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Carbon dioxide or hydrogen sulfide component
423226, 423228, 423242, 423243, 423551, B01D 5334
Patent
active
040497755
ABSTRACT:
This invention relates to a method for purifying waste air from sulphuric gases, in particular from hydrogen sulphide, carbon disulphide and sulphur dioxide by adsorption and oxidation in a bath containing inorganic oxidizing compounds soluble in water, e.g. hypochlorites of alkali metals, preferably sodium hypochlorite in an amount equivalent to at least 0.1 g, preferably 3-5 g of available chlorine per 1 liter of bath and, if need be additions in the form of chemisorbents such as polyethylene glycol or aliphatic amines in an amount of at least 0.005 g/l of bath, and/or oxidation catalysts such as vanadium and/or palladium salts in an amount of at least 0.01 g/l of bath, and/or organic oxidizing compounds soluble in water such as hydroquinone in an amount of at least 0.1 g/l of bath, with a pH-value of 9-12, in a closed cycle of bath.
REFERENCES:
patent: 1765869 (1930-06-01), Jaeger et al.
patent: 2781863 (1957-02-01), Bloch et al.
patent: 3794711 (1974-02-01), Bhatia et al.
patent: 3873672 (1975-03-01), Nishiba et al.
patent: 3969479 (1976-07-01), Lonnes et al.
Banasiak Jozef
Grams Wiktor
Majewska Janina
Rybicki Zbigniew
Instytut Wlokien Chemicznych
Thomas Earl C.
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