FLY ASH CLEANING DEVICE AND FLY ASH CLEANING METHOD

摘要

To provide a fly ash cleaning device and method that can remove radioactive materials and salts from the fly ash at low cost.SOLUTION: A device includes a cleaning unit 1 for generating the residue after washing as ash slurry with the transition of radioactive substances and salts contained in the fly ash dissolved in an organic solvent by washing the fly ash containing radioactive materials and salts with an organic solvent as cleaning liquid; a rinsing and drainage removing unit 2 for rinsing and drain ingress after the transfer of radioactive substances and salts contained in the organic solvent between the fly ash particles of the ash slurry connected to the cleaning unit 1 is dissolved in an organic solvent that receives the supply as a rinse solution; an adsorbing unit 3 that is connected to the cleaning unit and a rinse drainage unit for adsorbing and removing radioactive substances contained in the cleaning drainage from the cleaning unit 1 and the rinse drainage from the rinse drainage unit 2 by absorbent; and an evaporation solidification treatment unit 4 that is connected to the adsorption unit 3 and for solidifying the salts contained in the adsorption treatment drainage from the adsorption unit 3 by evaporation of the adsorption treatment drainage.SELECTED DRAWING: Figure 1