Method of removing nitrogen oxides from a gas and for converting

Details Method of removing nitrogen oxides from a gas and for converting Method of removing nitrogen oxides from a gas and for converting

1975-01-21

1976-11-09

Vertiz, Oscar R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423351, 423545, C01B 2100

Patent

active

039911616

ABSTRACT:
A method of removing nitrogen oxides from a gas containing nitrogen oxides and converting same to ammonium sulfate, wherein the gas containing nitrogen oxide is brought into contact with an aqueous solution which contains at least a ferrous salt and a sulfurous acid alkali salt to absorb the nitrogen oxides in the solution in the form of imidodisulfonic acid alkali salts, and the imidodisulfonic acid alkali salt is converted into ammonium sulfate by hydrolysis at a temperature higher than 100.degree. C after separation and recovery of the salt from solution.

REFERENCES:
patent: 1609872 (1926-12-01), Garner et al.
patent: 3635657 (1972-01-01), Bressan et al.

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