A Technological Transformation Expansion Reconstruction And Upgrading Of Electric Field Of Flue Gas Desulfurization System

SO2in the flue gas is the main component of air pollution, the main substance of the formation of acid rain, which is mainly caused by industrial production, accounting for80%of the total emissions, emissions of coal-fired power industry accounts for about SO2emissions the amount of45%. SO2emission control electric field can effectively improve its impact on the atmospheric environment. The subject of old generating units of a coal-fired power plant in Inner Mongolia technological transformation reconstruction, auxiliary exhaust gas purification facilities, reconstruction, construction of the project design, implementation and debugging and running, the following conclusions:The subject of old generating units of a coal-fired power plant in Inner Mongolia technological transformation reconstruction, auxiliary exhaust gas purification facilities, reconstruction, construction of the project design, implementation and debugging and running, the following conclusions:1. The technical innovation performance of desulfurization project to export the concentration of SO2emissions from FGD installations of FGD installations export soot concentrations, run the available rate of net flue gas moisture content, net temperature of flue gas desulfurization agent consumption, process water consumption electricity expansion efficient operation of the consumption of compressed air to protect.2. The actual situation of the plant, the desulfurization system design parameters:Ca/s,1.03mol/mol lime consumption rate of4.74t/h, L/G16L/Nm3circulating fluid volume is22000m3/h, spray equipment pouring layers into four layers, single pump cycle capacity of5500m3/h.3. Technological transformation expansion desulfurization project flue gas system, the SO2absorption and oxidation system, the desulfurizer preparation system, gypsum dewatering system, accident slurry system, process water systems and auxiliary systems and electrical control system combined process.4. The project to run the process by optimizing the operating parameters to improve the desulfurization efficiency of the desulfurization system to ensure the normal operation of the generator set, the stability of SO2from flue gas discharge standards.5. The construction of the theoretical analysis, SO2, and the reaction end of the reaction surface, the film mass transfer reaction model; flue gas SO2removal efficiency mainly by the diffusion of SO2dissolution, hydration absorption reaction, dissolution of limestone particles; the reaction of flue gas SO2mass transfer of SO2in the gas film diffusion resistance, the chemical reaction resistance of SO2in the liquid film diffusion resistance of SO2in the liquid film around the solid particles in the diffusion resistance effects, which the liquid film resistance to restrict the absorption rate of the whole process.6. The project put into operation after the desulfurization efficiency and stable maintained in more than95percent of exports of sulfur dioxide concentration is much lower than the value of the emission standards8mg/m3.