abstract |
A process for removing both CO₂ and NO x from combustion gases consists, first, in cooling a combustion gas to 50 to 100°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. |