| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust gas treatment method which can inhibit the adsorption of ammonia by a catalyst for mercury oxidation reaction and simplify treatment steps as a whole, as well as exhaust gas treatment equipment. <P>SOLUTION: This exhaust gas treatment equipment 1 is for sending an exhaust gas to a denitrification device 5 from a fire furnace 2, and the denitrification device 5 includes a first catalyst 10 which brings about mercury oxidation reaction and a second catalyst 11 which generates a denitrification reaction downstream of the first catalyst 10. In addition, an ammonia adding line 12 which adds ammonia, is arranged between the first catalyst 10 and the second catalyst 11. When the exhaust gas is treated, a halogenated gas is kept in such a state that it coexists in the exhaust gas from the fire furnace 2, and a hardly soluble metallic mercury contained in the exhaust gas is transformed to a water-soluble divalent mercury with the help of the first catalyst 10. Next, the exhaust gas is denitrified by the second catalyst 11 with the addition of ammonia supplied from the ammonia adding line 12. <P>COPYRIGHT: (C)2011,JPO&INPIT |
