| 摘要 |
PROBLEM TO BE SOLVED: To provide a bottom section structure of a waste melting furnace capable of preventing scattering of furnace dry distillation residue caused by increase of a furnace superficial velocity, and properly discharging molten matters while preventing formation of a core. SOLUTION: In this bottom section structure of the waste melting furnace where the bottom section 3 is formed continuously from an inclined bosh portion 2 positioned at a lower portion of a shaft portion 1, a lower tuyere 4 and a discharge hole 5 for discharging the molten matter are formed on the bottom section 3, blocked carbon combustible substances such as waste and cokes are charged from a furnace upper portion, an oxygen source is supplied from a furnace lower portion, ash contents in the waste and non-burnt matters melted by reaction heat are discharged from the discharge hole of the bottom section, and a gas generated from the furnace upper portion is discharged, D1>D2>D3, and S1>S2>S3 are satisfied when a shaft diameter is D1, a diameter of an upper bottom section 3a is D2, a diameter of a lower bottom section 3b is D3, and their cross-sectional areas are respectively S1, S2 and S3. COPYRIGHT: (C)2007,JPO&INPIT
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