| 摘要 |
PROBLEM TO BE SOLVED: To provide a pretreatment method for coal for coke making in which for drying water attached to the coal with hot air, the coal is cooled to a temperature, to prevent the dust generation by evaporating of remaining water during the transport of the coal to a coke oven. SOLUTION: By blowing a gas from plenum chambers 2 (2a, 2b, 2c, 2d) arranged at the lower side through a dispersion plate 3 into a fluidizing section 4 and freeboard sections (5a, 5b, 5c, 5d) arranged at the upper side, coal particles supplied onto the dispersion plate 3 are fluidized and moved horizontally, thus being dried with hot air and cooled. In this apparatus, an intermediate cooling chamber (5c) is installed between drying chambers (5a, 5b) and a cooling chamber (5d). After the coal particles are dried in the drying chambers by supplying hot air, the particles are subjected to cooling in the intermediate cooling chamber while preventing the oxidation of the particles by supplying low-oxygen-concentration gas, e.g. a gas containing an exhaust gas from the freeboard section. In the cooling chamber, the coal particles are finally cooled by supplying air to the temperature at which the evaporation of remaining water does not cause a problem.
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