| 摘要 |
PURPOSE:To easily improve the efficiency of reclamation using fluidized-bed combustion ash, by granulating combustion ash formed during burning a fluidized bed comprising coal and limestone as a desulfurizing agent while adding the specified amount of water to it. CONSTITUTION:In adopting a fluidized-bed combustion system comprising coal and limestone as a desulfurizing agent while using coal as fuel for a boiler or the like, formed combustion ash is unmelted one and contains CaO and CaSO4 formed by desulfurization. Therefore, the efficiency of reclamation using said ash for reclamation is small. Sea or fresh water is added to said fluidized-bed combustion ash in a manner such that the mixing ratio of water becomes 20- 70%, and the ash is granulated into a granular formed body of 2-30mm. in particle size. Hence, reclamation disposal for increasing the efficiency of reclamation using the combustion ash for reclamation can be performed.
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