A new spray-dry flue gas desulfurization(FGD) scrubber with magnetically fluidized bed has been developed. Experiments have shown that the overall SO_2 absorption rate of this scrubber is more than 80% at 1-2 calcium to sulfur ratios, as opposed to values less than 70% at 1-2 calcium to sulfur ratios for other spray dry scrubbers developed previously. Three sensitive techniques such as powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and BET have been used for the characterization of the reactants and the resultant to study the effects of the magnetic fluidized field on the SO_2 removal efficiency. The study shows that the magnetic field modifies the textural properties of the reactants and the resultant, as well asthe ferromagnetic grains act as the catalyst on oxidation of the SO_3~(2-). Both of them are due to the increase of the overall SO_2removal efficiency.
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