Process for removing SO.sub.2 from gases

Details Process for removing SO.sub.2 from gases Process for removing SO.sub.2 from gases

1978-01-20

1979-08-14

Vertiz, O. R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

55 73, C01B 1700

Patent

active

041645480

ABSTRACT:
The invention relates to a method for the treatment of industrial effluent gases for the removal of sulphur dioxide, according to which the gases are contacted with an absorbing solution, containing alkali metal sulphite and bisulphite, the solution, before the contact stage, being pre-treated with air or other gas inert to the solution, preferably a gas devoid of oxygen, whereby the SO.sub.2 partial pressure of the solution is reduced, thus enhancing the SO.sub.2 removal from said effluent gases.

REFERENCES:
patent: 1589133 (1926-06-01), Eustis
patent: 3510253 (1970-10-01), Fattinger et al.
patent: 3847570 (1974-11-01), Gunther

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