| 摘要 |
<p>Provided are a method and a device which suppress toxicity due to CO and can efficiently remove, at low temperature, low concentrations of amines included in gas discharged from a CO2 recovery device which uses various liquids to absorb CO2. The method for treating discharged gas, which removes amines included in gas discharged from a carbon dioxide (CO2) removal device that uses an amine absorbent, wherein the following steps are alternately performed: a step in which discharged gas is passed through a layer that is packed with a catalyst comprising titanium oxide and an oxide of vanadium (V), or comprising titanium oxide, an oxide of vanadium, and an oxide of molybdenum (Mo) or tungsten (W), to adsorb and remove amines included in the gas; and a step in which hot air is passed through the layer that is packed with the catalyst and has adsorbed the amines, to raise the temperature of the catalyst and at the same time dissociate, oxidize and degrade the adsorbed amines.</p> |
