浸渍沉淀法制备钙基烟气脱硫剂

he paper based on the principle of Gibbs energy minimization, using the HSC software simulation, CaS was a suitable desulfurizer obtained by thermodynamic analysis. The method of impregnation precipitation was adapted to prepare calcium-based flue gas desulfurizer. X-ray diffraction (XRD) and scanning electron microscopy (SEM) and other characterization technique were ued to analysis the apparent shape of the desulfurizer before and after desulfurization. And the content of residual SO2 was measured by gas chromatography (GC). The influence of the immersion time and the calcination temperature on the desulfurizer was studied. By introducing chemical chain technology, the prolapse concentration of SO2 was 4.44% by using multi-stage fixed bed reactor under 500 ℃. The product was reduced to regenerate the desulfurizer to realize the recycling of desulfurizer by using chemical chain technology.At the beginning of desulfurization, the desulfurization efficiency can reached 99% because of the insufficient desulfurizer. As thereaction proceeds the desulfurization efficiency decreased since content of desulfurization reduced. The results indicated that the effect of the immersion time on desulfurization was little, but the effect of calcination temperature was great.