The Experiment Research Of Desulfurization Of Cavity Atomizing Corona

The discharge of SO2pollute atmosphere environment, and influence the health and lifeof human beings in serious. Sulfur dioxide of Industrial waste gas accounts for90%of sulfurdioxide years emissions in China, so the flue gas desulfurization has received the extensiveconcern of many scholars. In this paper, the technology innovation of traditional FGDimproved the desulfurization efficiency. This article combined wet desulphurizationtechnology of calcium with dynamic cavity discharge atomization technology. First, the paperhas carried on preliminary selection of the experiment from the discharge characteristics andelectrostatic atomization effect and so on. And then the nature of the desulfurization liquidhas been studied. Finally, it searched factors that influence on the atomization of calciumdesulphurization with the the simulated gas of SO2gas mixed with air.First, it studied the relationship between the diameter of cavity atomizing electrode andatomization effect. From the discharge atomization characteristics, liquid consumption anddispersivity, we can draw a conclusion that with the decreasing of cavity electrode curvatureradius, the spatial intensity of discharge increases, the diameter of the atomized dropletsdecreases and dispersion increases. And the reduced volume of fluid consumption, to increasethe efficiency of desulphurization and reduce the consumption of the desulfurization liquid, sounder the condition of normal atomization of liquid jet, appropriate small curvature radius ofthe cavity electrode should be chosen.Then through the comparison of the dry electrodes, the before of and the after ofatomizing electrode, the relation of atomizing electrode connection mode and atomizationeffect is studied. We can draw a conclusion that it is the after of atomizing electrode that hasthe higher discharge intensity, the larger range of current on the ground plate, and betterdispersivity.And then through the analysis of ionic polarization characteristics of the desulfurizationsolution, compared the different electrode connection mode, the different connection modewill caused by the different of the space discharge intensity, the atomization effect of desulfurization liquid and the current scope of ground plate.Studied the properties of the desulfurization liquid, with calcium hydroxide solution asthe desulfurization liquid. By comparing the different concentrations of calcium hydroxidesolution with water injection results indicate: hydrogen bonding force between the watermolecules, molecular inter-atomic forces, and gravity between the solid particles influence theeffect of liquid atomization and desulfurization efficiency. So the solution mass concentrationof calcium hydroxide chooses15%~20%.SO2gas and air mixed gas as to simulate gas, the paper makes simulating flue gasdesulfurization on the basis of the before experimental conditions. Under different conditions,a series of the experimental results show that: in SO2concentration of4.6×104mg/m3,working voltage is25kV, the flue gas residence time is5min, the mass concentration ofcalcium hydroxide solution is15%~20%, desulfurization efficiency can reach above95%.