Process for removing SO.sub.2 and NO.sub.x from gases

Details Process for removing SO.sub.2 and NO.sub.x from gases Process for removing SO.sub.2 and NO.sub.x from gases

1977-08-22

1978-12-19

Vertiz, O. R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423242, 423561R, 423571, C01B 2100

Patent

active

041306287

ABSTRACT:
A method is disclosed for scrubbing SO.sub.2 and NO.sub.x containing gases with iron sulfide. The reaction proceeds only to the formation of FeS.sub.2 and FeSO.sub.4 without significant formation of sulfur or iron oxide. The reaction products are subsequently regenerated to FeS by heating and can be recycled for further scrubbing operations; elemental sulfur is recovered as a by-product.

REFERENCES:
patent: 1062120 (1913-05-01), Sanborn et al.
patent: 1976704 (1934-10-01), Ward et al.
patent: 3695828 (1972-10-01), Gertsen et al.
patent: 3784680 (1974-01-01), Strong et al.
patent: 3920421 (1975-11-01), Collins
patent: 4008169 (1977-02-01), McGauley

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