PROCESS FOR PREPARING HYDROXYLAMINE FROM NOx-CONTAINING FLUE GASES

摘要

A process and device are disclosed for preparing hydroxylamine from NOx-containing flue gases. Nitrogen removal from the NOx-containing flue gases by absorption in an aqueous solution of FeII-EDTA and by desorption through vapour stripping of the NA from the thus obtained FeII(NO)-EDTA solution, with admixture of hydrogen, leading to the recovery of an NO/H2 gaseous mixture, is combined with hydroxylamine synthesis by catalytic reduction of NO with hydrogen.