PROCESS FOR DENITRATION OF EXHAUST GAS

摘要

A denitration process for removing nitrogen oxides contained in low-temperature exhaust gas at a high degree of denitration, namely, a denitration process for removing reductively nitrogen oxides contained in an exhaust gas (x) containing nitrogen monoxide and sulfur dioxide through reductive decomposition which comprises the preliminary step (2) of oxidizing part of the nitrogen monoxide contained in the exhaust gas (x) into nitrogen dioxide, the radical formation step (3) of adding a nitrogen compound and a hydrocarbon compound to a high -temperature zone (22) to form aminyl radicals (r), and the denitration step (4) of mixing the aminyl radicals (r) with the pretreated gas (p) discharged from the preliminary step (2) and containing nitrogen monoxide and nitrogen dioxide.