Process for removing sulfur oxides and/or nitrogen oxides from w

Details Process for removing sulfur oxides and/or nitrogen oxides from w Process for removing sulfur oxides and/or nitrogen oxides from w

1975-07-10

1977-07-12

Vertiz, O. R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423242, 423243, C01B 2100, C01B 1700

Patent

active

040354709

ABSTRACT:
Sulfur oxides and/or nitrogen oxides are removed from waste gas containing the same by adding chlorine dioxide or ozone gas to the waste gas in case where nitrogen monoxide is contained in the waste gas, and by scrubbing the waste gas with an aqueous scrubbing solution containing the sulfite of alkali metals or ammonium and oxidation retardant consisting of the sulfide, polysulfide or thiosulfate, of alkali metals or ammonium and thiourea.

REFERENCES:
patent: 3023076 (1962-02-01), Karwat
patent: 3635657 (1972-01-01), Bressan et al.
patent: 3695828 (1972-10-01), Gertsen et al.
patent: 3773897 (1973-11-01), Fields et al.
patent: 3836630 (1974-09-01), Noguchi et al.
patent: 3843771 (1974-10-01), Urban
patent: 3906080 (1975-09-01), Gorin et al.
patent: 3920421 (1975-11-01), Collins

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