Acid exhaust gas treating agent, acid exhaust gas treatment method and acid exhaust gas treatment facility

摘要

To provide an acidic exhaust gas treatment agent, an acidic exhaust gas treatment method, and an acidic exhaust gas treatment facility capable of enhancing efficiency of removing nitrogen monoxide in treating an acidic exhaust gas generated in burning facilities such as a thermal power plant and an incineration apparatus with a layered double hydroxide.SOLUTION: An acidic exhaust gas treatment method includes: a step (1) of making an acidic exhaust gas treatment agent adsorb an acidic substance in an acidic exhaust gas by bringing the acidic exhaust gas treatment agent into contact with the acidic exhaust gas, wherein the acidic exhaust gas treatment agent contains a composite of a Mg-Al based layered double hydroxide and at least either one of manganese oxide and a permanganate compound; a step (2) of desorbing the acidic substance adsorbed by the acidic exhaust gas treatment agent in the step (1) to reactivate the acidic exhaust gas treatment agent; and a step (3) of recovering the acidic substance desorbed from the acidic exhaust gas treatment agent in the step (2).SELECTED DRAWING: None