PROCESSING METHOD AND DEVICE FOR EXHAUST GAS CONTAINING CARBON DIOXIDE

摘要

[Problem] To provide a processing method for exhaust gas containing CO2, said method enabling the concentration of an oxidation inhibitor in an absorbent solution to be adjusted to a concentration which is sufficient for the inhibition of oxidation, without measuring the concentration of an alkanolamine oxidation inhibitor contained in a CO2 absorbing solution. [Solution] A method and device for adjusting the composition of an absorbent solution which carries out the absorption and discharge of carbon dioxide, by adding an oxidation inhibitor to an alkanolamine absorbent liquid when the sum of the concentration of ammonia and alkylamine in absorber outlet gas from a CO2 absorption device increases.