Research On Plasma Desulfurization And Denitrification Joint Mercury Removal

The emissions of air pollution is a huge load in China, the sulfur dioxide and nitrogen oxideemissions are the world leader, coupled with the increasingly serious emissions of highly toxic heavymetals like mercury, China has become one of the world’s most polluted areas. Coal-fired fluepollution control is the important measure of the atmospheric environmental pollution control, fluegas desulfurization and denitrification with mercury removal is the focus flue gas pollutioncontrol.Around the national emission reduction strategies and financial austerity policy, developmentand research the desulfurization and denitrification integrate mercury removal technology isextremely urgent. From the angle of reducing energy consumption and improving the efficiency, weuse the low-temperature plasma technology to reduce pollutants,and practical the reliable research.Weoptimize low-temperature plasma discharge reactor structure, establish a kinetic model, thedesulfurization and denitration with mercury removal process also analysis the simulation kineticsresults to analyze.Finally, the experimental results demonstrated the characteristics of the integrationremoval，as well as verify the correctness of the reaction dynamics simulation method.Compare and analysis of several low-temperature plasma reactor discharge institutions, physicaland chemical properties, select the most conducive dielectric barrier discharge reactor to improve thedischarge intensity. Based on pulse discharge, we establish NO/SO2/Hg0/N2model, to research NO,SO2, Hg integration removal. Preparation of C++programs, structures pollutant removal bench,analysis the numerical simulation and experimental result, we concluded: Plasma powercharacteristics improve the pollutant removal, to increase the power supply voltage or increase thedischarge frequency can reduce the emission of pollutants, to some extent, improve the efficiency offlue gas purification. In a dry environment, the concentration of SO2is almost unchanged, it can notbe removed without water vapor, after adding vapor, the SO2removal rate can reach more than80%.Add to oxygen and water vapor to establish NO/SO2/Hg0/N2/O2/H2O system, through numericalsimulation and experimental analysis, it is found that a certain concentration of O2and H2O improvethe efficiency of the purification of pollutants.