Method of improving sulfite antioxidant performance in high soli

Details Method of improving sulfite antioxidant performance in high soli Method of improving sulfite antioxidant performance in high soli

1981-01-09

1982-08-03

Vertiz, O. R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

252397, 252400, 423243, 423512AA, C01B 1700

Patent

active

043427332

ABSTRACT:
An improved method for inhibiting sulfite oxidation in scrubber liquor of the type containing sulfite species is disclosed. A topping agent selected from the group consisting of polyphosphate compounds, and organo-phosphonic acid compounds, and mixtures thereof, is added to the scrubbing liquor to supplement and enhance the antioxidant activity of sulfite antioxidant agents such as the linear polyethyleneamines and substituted secondary and tertiary aromatic amines.

REFERENCES:
patent: 3899293 (1975-08-01), Bush
patent: 3918521 (1975-11-01), Snavely et al.
Du Pont Chemical Fact Sheet on Du Pont Antioxidant No. 23.

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