September 2011
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Reneng Dongli Gongcheng/Journal of Engineering for Thermal Energy and Power
With limesone at two finenesses serving as the desulfurization agent, experimentally studied were the desulfurization characteristics of a sprinkling type desulfurization tower. The test results show that at a definite flue gas flow speed, the desulfurization efficiency will increase with an increase of the liquid-gas ratio. At a high flue gas flow speed, the tendency increasing the desulfurization efficiency with the liquid-gas ratio will be even more remarkable. The desulfurization efficiency will also increase with an increase of the pH value of the slurry and decrease with an increase of the SO2 concentration of the flue gas at the inlet. The smaller the particle diameter of the limestone, the better the dissolvability, more favorable to improving the desulfurization efficiency. In combination with the drag force characteristics in the absorption section, an optimal operating point of the device was obtained from an analysis. When the flue gas flow speed is 2.31 m/s, the circulating slurry flow rate is 50 m3/h and the PH value in the slurry pool ranges from 5.6 to 5.8, the desulfurization efficiency hits 93.9%.