| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust gas treatment device which can minimize the consumption of a denitrification catalyst to be made available for the treatment to denitrify an exhaust gas, a combustion furnace and an exhaust gas treatment method. <P>SOLUTION: This exhaust gas treatment device 30 for a boiler 1 is designed for treating an exhaust gas generated at a fire furnace 3. The device 30 comprises: an ammonia atomizing part 31 which can reduce NOx of the exhaust gas by atomizing ammonia for non-catalytic denitrification into the exhaust gas; an ammonia atomizing part 33 which can reduce NOx of the exhaust gas by atomizing the ammonia for catalytic denitrification into the exhaust gas and thereby, bringing the exhaust gas into contact with a denitrification catalyst; the denitrification catalyst 35; and a boiler control part 45 which can control the ratio of the atomization amount of the ammonia atomizing part 31 and the atomization amount of the ammonia atomizing part 33, based on the degree of performance deterioration of the denitrification catalyst 35. <P>COPYRIGHT: (C)2011,JPO&INPIT |
