Method of neutralizing industrial waste gases

Details Method of neutralizing industrial waste gases Method of neutralizing industrial waste gases

1975-06-12

1978-08-08

Vertiz, O. R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423240, 423244, B01J 800, C01L 2100, C01B 700, C01B 1700

Patent

active

041057449

ABSTRACT:
Increased quantities of acidic components present in industrial waste gases (particularly nitrogen and sulphur oxides) are removed by active carbonates of alkaline metals prepared in a novel way. A suitable starting material is heated to a temperature of between 30.degree. and 200.degree. C. in a stream of gas from which the acidic components have been at least partially removed. The resulting active alkali metal carbonates, free of hydrates, are subsequently brought at temperatures between 100.degree. and 200.degree. C. into contact with the humid waste gas. A preferred apparatus for carrying out the method is also described.

REFERENCES:
patent: 3498743 (1970-03-01), Kyllonen
patent: 3505008 (1970-04-01), Frevel et al.
patent: 3524720 (1970-04-01), Bauer
patent: 3862295 (1975-01-01), Talles
patent: 3880629 (1975-04-01), Dulin et al.
patent: 3976747 (1976-08-01), Shale et al.

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