Method for removing acidic components including nitrogen oxide f

Details Method for removing acidic components including nitrogen oxide f Method for removing acidic components including nitrogen oxide f

1983-05-26

1985-09-17

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423242, 423395, 423396, 423545, 71 57, 71 58, 71 60, C01B 2100, C01B 1700, C01B 2148, C01C 124

Patent

active

045419990

ABSTRACT:
A method of simultaneously removing SO.sub.x and NO.sub.x from waste gases. Using a known desulfurization process the waste gases free of the acidic components are contacted with an oxidizing agent in the gas phase for the oxidation of the oxygen of nitrogen contained in the waste gases. The formed NO.sub.2 is absorbed in a subsequent absorbing stage under previous addition of NH.sub.3 and the thereby obtained absorbing product is oxidized to form ammonium nitrate in a subsequent oxidation stage with atmospheric oxygen and then reconveyed into the desulfurization process.

REFERENCES:
patent: 3453071 (1969-07-01), Schmitt et al.
patent: 4029739 (1977-06-01), Senjo et al.
patent: 4035470 (1977-07-01), Senjo et al.
patent: 4276276 (1981-06-01), Van Hook et al.

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