Combustion Emission Characteristics Of MSW In O₂/CO₂ Atmosphere

As the waste incineration technology has become a realistic choice of municipal solid waste(MSW) treatment owing to its advantages of harmless and resources. But burning pollutant problem need to solve urgently.O2/CO2 combustion is a new clean combustion technology,this technology can comprehensively control CO2、NO X、SO X and other pollutants emissions.At present,the theoretical and experimental research of O2/CO2 combustion technology are aimed primarily at coal, and has made great progress, but O2/CO2 combustion technology for MSW research was few. The typical MSW O2/CO2 combustion characteristics was still analyzed by using thermal instrument,and it aim to analysis burning mechanism and dynamics by TG and DTG curves.in the thesis, O2/CO2 combustion technology was applied to MSW combustion, and the flue gas analyzer is used to inspect the NO X and SO X of content, researching the rules of pollutant generation and its influencing factors.The newspapers, orange peel, poplar leaves, cotton cloth, plastic and its mixture at three temperature of 600℃, 750℃ and 900℃ temperature in the four atmosphere of 21O2/79N2、21O2/79CO2、30O2/70CO2 and 40O2/60CO2 in the tube furnace combustion experiments. The results show that:(1)The newspapers, orange peel, poplar leaves, cotton cloth, plastic and its mixture combustion products under O2/CO2 atmosphere than 21O2/79N2 atmosphere and produce lower content of NO and SO2. The newspapers combustion product of maximum peak NO is 92 ppm under O2/CO2 atmosphere,but the newspapers combustion product of maximum peak NO is 347 ppm under 21O2/79N2 atmosphere.The mixture combustion product of maximum peak SO2 is 15 ppm under O2/CO2 atmosphere,but the newspapers combustion product of maximum peak SO2 is 26 ppm under 21O2/79N2 atmosphere.(2)At the O2/CO2 atmosphere, a typical components are increased with the increase of oxygen concentration, the discharge of NO X and SO X are also increased, and the peak time is more and more early. But the discharge of NO X and SO X is reduced with the increase of oxygen concentration for PE, peak time has no apparent relationship with oxygen concentration.(3)At the O2/CO2 atmosphere, a typical components are increased with the increase of temperature, the discharge of NO X and SO X are also increased, and the peak time is more and more early. But the discharge of NO X and SO X is reduced with the increase of temperature for PE, peak time is also more and more early.