| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluidized-bed cooling device the equipment cost/maintenance cost of which are reduced and in which spontaneous combustion of coal is prevented when coal is dried.SOLUTION: A fluidized-bed cooling device includes: fluidizing gas supply parts 105A, 105B for supplying a fluidizing gas to the lower part of a cooling vessel 102 to form a fluidized bed together with a cooled material; gas discharge parts 106A, 106B for discharging the supplied fluidizing gas from the upper part of the cooling vessel 102; and cooling means 108a-108d disposed in two or more cooling chambers 102a-102d formed by dividing the inside of the cooling vessel 102 by partition plates 107a-107c in the moving direction of a cooled raw coat 101C being the cooled material in the fluidized bed. A partition plate 107a which divides the fluidized bed freeboard F1 of the first cooling chamber 102a from the fluidized bed freeboard F2 of the second cooling chamber 102b adjacent thereto, is hanged from the ceiling side of the cooling vessel 102 and an inert gas 109A is used as the fluidizing gas to be supplied to the first cooling chamber 102a. |
