| 摘要 |
PROBLEM TO BE SOLVED: To provide a circulating fluidized bed combustion furnace capable of suppressing abrasion and thinning of evaporation pipes caused by a fluid material and particles such as unburned ash, and lengthening a pitch of maintenance work such as thermal respray of coating of a wear resisting member. SOLUTION: In the circulating fluidized bed combustion furnace in which a combustion chamber is divided by a furnace wall (fin) 12a formed by arranging the plurality of evaporation pipes 17 in parallel, a refractory 16 is disposed while covering a lower section of the furnace wall, and the circulating fluid material and the particles such as unburned ash are lowered along the furnace walls, a projecting distance X from an inner wall surface 17a of the evaporation pipe 17 to an end face 16a of the refractory is 50 mm or more. COPYRIGHT: (C)2010,JPO&INPIT
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