| 摘要 |
PROBLEM TO BE SOLVED: To provide a reheat boiler reducing unbalance of temperature distribution by changing a gas flow pattern of a reheat burner in regard to a gas temperature of combustion gas on an outlet side of a reheat furnace. SOLUTION: The reheat boiler 10A is equipped with a main boiler 106 configured such that main combustion gas generated by combustion of a burner 101 flows from a furnace 102 through a superheater 104 and a steam generating tube group 105, the reheat furnace 108 disposed in a wake side of the steam generating tube group 105 and generating reheat combustion gas by combustion of the reheat burner 107, and a reheater 109 disposed in an upper part side of the reheat furnace 108. The reheat furnace 108 and the reheater 109 are connected to provide a block plate 130 narrowing a passage cross-sectional area of the combustion gas on a reheat furnace outlet part 120 forming a passage of the combustion gas and the reheat combustion gas and to use it as a drift prevention part. COPYRIGHT: (C)2010,JPO&INPIT
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