A Burning Experiment Study of an Integral Medical Waste Incinerator

Mass burning of the medical waste is becoming attr active in China because Chinese government has banned landfilling of medical waste. Many advantages can be found in this method, such as reduction in waste vol-ume, destruction of pathogens and transformation of waste into the form of ash. However, the medical waste with high moisture in China is not suitable to be trea ted in the present direct mass burning incinerators. In this paper, a novel integral incinera tor is developed with combining a f eeder, a rotary grate, a primary com-bustion chamber (PCC) and a “coaxial” secondary combustion chamber (SCC) into a unique unit. Its capa-bility is 10 ton/day. As the air excess level in the PCC was only 40% stoichiometric ratio, the PCC acted as a gasifier. The 1.0 excess air ratios in the SCC preserved the purpose of full combustion of flue gas. Tempera-ture and pollutants concentration in the SCC were m easured to understand the combustion behavior of vola-tile organics. Emission concentrations of pollutants before stack were also tested and compared with the China National Incineration Emission Standard.