| 摘要 |
PROBLEM TO BE SOLVED: To provide boiler exhaust gas duct equipment of which the life can be made long and which is highly reliable, by relaxing a large thermal stress generated in the lower end part of a boundary partition wall, the lower end part of a side wall shared by an inlet duct and a denitrifying equipment main body, due to a large temperature difference brought about on starting a boiler, in particular, and by preventing thereby the damage due to the generation of the stress. SOLUTION: In boiler exhaust gas duct equipment 10 integrated in the structure with denitrifying equipment, reinforcing plates 36 are provided on the right and left end sides of the lower end part 25 of a boundary partition wall 19, the lowermost end part of the boundary partition wall, which is used both as outer walls of an inlet duct 12 and as side walls 17 of a denitrifying equipment main body 11 and in which a thermal stress becomes the largest on starting a boiler, in particular. Moreover, the inside faces of the reinforcing plates 36 are welded to the side walls 17 provided on both of the right and left end sides of the denitrifying equipment main body 11 and also to the side walls on both of the right and left end sides of the inlet duct 12.
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