Process for removing carbon dioxide and nitrogen oxides from combustion gases

摘要

A process for removing both CO2 and NOx from combustion gases consists, first, in cooling a combustion gas to 50 to 100 DEG C. and adding ozone to oxidize NO in the combustion gas to NO2. Then in a CO2 removal step, the gas is brought into contact with an aqueous solution of an alcoholic hydroxyl-containing secondary- or tertiary-amine to remove NO2 together with CO2 from the gas.