Process for treating a waste gas containing sulfur oxides

Details Process for treating a waste gas containing sulfur oxides Process for treating a waste gas containing sulfur oxides

1977-02-11

1980-02-05

Vertiz, O. R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

423239, 423570, 423573R, 252190, C01B 1700, B01J 800, C01B 2100, C01B 1702

Patent

active

041872827

ABSTRACT:
A waste gas containing sulfur oxides is contacted with an adsorbent comprising an intimate mixture of an iron oxide and/or a copper oxide and a titanium oxide at a temperature of 250.degree.-500.degree. C. The sulfur oxides thus adsorbed are desorbed with a reducing gas and recovered as sulfur material.
The efficiency of the adsorbent is not reduced even after many repetitions of the adsorption-desorption cycle. Since the adsorbent exhibits a high resistance to sulfuric acid mist (SO.sub.3) contained in the waste gas.

REFERENCES:
patent: 1540445 (1925-06-01), Wilson
patent: 1900883 (1933-03-01), Lusby
patent: 3579302 (1971-05-01), Sefton
patent: 3725531 (1973-04-01), Pearson et al.
patent: 3888970 (1975-06-01), Haas et al.
patent: 4001376 (1977-01-01), Cull

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