METHOD AND APPARATUS FOR REMOVING NITROGEN DIOXIDE AND CARBON DIOXIDE

摘要

PROBLEM TO BE SOLVED: To provide a method for removing nitrogen dioxide and carbon dioxide, capable of efficiently removing nitrogen dioxide from a gas containing nitrogen oxides and carbon dioxide and capable of suppressing the accumulation of nitrogen oxides in a carbonic acid removing absorbing solution, and an apparatus for removing nitrogen dioxide and carbon dioxide.

SOLUTION: The method for removing nitrogen dioxide and carbon dioxide includes a denitration process 10 of bringing the gas 1 containing nitrogen oxides and carbon dioxide into contact with a basic absorbing solution 2 containing a reducible substance to remove nitrogen dioxide from the gas 1 and a carbonic acid removing process 20 of bringing the gas 3 subjected to denitration in the denitration process into contact with the carbonic acid removing absorbing solution 4 to remove carbon dioxide from the gas 3.

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