Method of removing nitrogen oxides from a gas containing nitroge

Details Method of removing nitrogen oxides from a gas containing nitroge Method of removing nitrogen oxides from a gas containing nitroge

1975-01-21

1976-11-16

Vertiz, Oscar R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423351, C01B 2100

Patent

active

039925080

ABSTRACT:
A method of effectively removing nitrogen oxides which are entrained in a gas, wherein a nitrogen oxide-containing gas is brought into contact with an aqueous solution which contains at least one ferrous salt and one sulfurous acid alkali salt to absorb the nitrogen oxides in the solution in the form of imidodisulfonic acid alkali salt, hydrolyzing the imidodisulfonic acid alkali salt to obtain a hydrolyzate-containing solution, and adding nitrous acid, nitrous acid anhydride, or nitrite to the hydrolyzate-containing solution to generate nitrogen.

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Chem. Abstr. -vol. 70-1969-No. 73674c.
Chem. Abstr. -vol. 63-1965-No. 14350d.

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