| 摘要 |
<p>PURPOSE:To subject a compd. to a desulfurization and dehalogenation treatment wile making effective use of the same absorbent by reusing the mixture composed of the waste incineration ash and dusulfurizing absorbent discharged from a fluidized bed type waste combustion furnace to absorb away the halogen compd. in the waste gas. CONSTITUTION:The SOx generated in the fluidized bed type waste incineration fornace 2 in which the solid granular desulfurizing absorbent such as limestone is used as a heat medium is removed by the desulfurizing absorbent in the fluidized bed. The excess desulfurizing absorbent is discharged together with the waste incineration ash from a line 23. The waste combustion gas contg. halogen compd. such as HCl, Cl2 and HF is fed through a line 22, a heat recovering device 4 and a dust collector 5 to a moving bed type dehalogenation device 6. The mixture composed of the desulfurizing absorbent contg. the activated and unreacted absorbent and the waste incineration ash is supplied through a line 6 to the device 6, by which the halogen compd. in the waste gas is absorbed away. The cleaned up gas is discharged through a line 71 to the outside of the system and the reacted absorbent is taken out of a line 62.</p> |
