Method and system for removing nitrogen oxides (NOx) and sulfur dioxide (SO2) from flue gases with the production of nitrogen fertilizer

摘要

the subject of the invention is a method and system for removal of nitrogen oxides (nox) and sulphur dioxide (so2) from the exhaust gas boiler manufacture fertilizer nitric acid, is applicable in particular in coal-fired energy blocks.removal of nitrogen oxides (nox) and sulphur dioxide (so2) from the exhaust of nitric fertilizer production is that nitric oxide is oxidised in the exhaust gas of ozone, and the resulting diaazotu pentoxide in reaction with steam creates nitric acid, which is neutralised with potassium hydroxide or sodium to potassium nitrate or sodiumwhich arose as a result of the oxidation of nitrogen dioxide is absorbed together with sulphur dioxide and oxygen in the exhaust gas stream flowing przeciwpru0105dowo to suspension of calcium hydroxide or calcium carbonate, with which the sulphur dioxide creates calcium sulphite, subsequently oxidised oxygen d of sulfate in catalytic effects of nitrogen dioxide.the nitrogen dioxide is reduced to molecular nitrogen n2.system for removal of nitrogen oxides (nox) and sulphur dioxide (so2) from the exhaust of nitric fertilizer production equipped with rotary air heater, boiler, electrostatic precipitator, the condenser exhaust fan exhaust and cold storage kominowu0105 is characterized by the fact that contains ozone generator (9) and the administration of ozone (10), which is connected directly with the oxidising (11),combined with absorberem shower (12).