| 摘要 |
PROBLEM TO BE SOLVED: To provide a denitration device of a boiler for ships, and the boiler for ships capable of efficiently denitrating a combustion gas even in the boiler for ships limited in an installation space. SOLUTION: This denitration device 20 of the boiler 1 for ships in which the combustion gas generated in a furnace 2 successively passes through an upstream-side piping section 81 and a downstream-side piping section 82 of a superheater 8 disposed in a gas duct 5 along the gas flowing direction, includes a nozzle 21 disposed in a state of penetrating through a duct wall of the gas duct 5 and spraying a reducing agent to the combustion gas flowing in a space 13 between the upstream-side piping section 81 and the downstream-side piping section 82, and a seal box 25 disposed at an outer side of the gas duct 5 in a state of surrounding the gas duct penetrating section of the nozzle 21. COPYRIGHT: (C)2011,JPO&INPIT
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