| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a flue gas denitration apparatus capable of suppressing pressure drop while preventing clogging caused by massive ash, and satisfactorily maintaining purification performance of a catalyst. <P>SOLUTION: The flue gas denitration apparatus 14 includes a catalyst group 20 arranged with: a first catalyst 18a having a larger catalyst pitch on a closer side to a flue gas inlet 16a; a second catalyst 18b having a middle sized catalyst pitch in a middle part of the catalyst group; and a third catalyst 18c having a smaller catalyst pitch on a deeper side from the flue gas inlet, so that the catalyst pitch becomes larger from the deeper side to the closer side to the flue gas inlet 16a in response to the distribution of the massive ash having a larger outward form toward the flue gas inlet part 16a side. <P>COPYRIGHT: (C)2012,JPO&INPIT |
