Abstract
This study is focused on a “V-type” waste incinerator for municipal solid waste (MSW) combustion. Computational fluid dynamics (CFD) methods are used to study the MSW combustion process. The characteristics of fly ash and slag are analyzed by using a laser particle analyzer, scanning electron microscope, X-ray fluorescence, and X-ray diffraction. The results show that the error between the CFD simulation data and measured data is less than 10%, and the changing trend of the combustion process is well-modeled. The fly ash mainly has an irregular spherical or ellipsoid structure, whereas the slag mainly has an irregular porous structure. The main constituents of the ash and slag are CaO and SiO2, along with heavy metal elements such as Cu, Pb, and Cr.
Highlights
With the growth of the population, economic development and urban expansion year by year, the amount of generated municipal solid waste is increasing [1]
It can be seen that the simulated temperature was in good agreement with the measured temperature, with a relative error of less than 10%
7 shows the temperature distribution on the middle plane of the incinerator obtained through the simulation calculation
Summary
With the growth of the population, economic development and urban expansion year by year, the amount of generated municipal solid waste is increasing [1]. Traditional landfill methods are facing numerous challenges such as land restrictions and pollution, and how to deal with millions of tonnes of household waste is becoming the biggest problem facing environmental managers [2,3]. The pollutant emission standards for municipal solid waste (MSW) incinerators are becoming increasingly stringent. The National Standard for Environmental Protection of the People’s Republic of China (HJ 1134-2020) published in August 2020 will prevent environmental pollution, improve ecological quality and regulate and guide the environmental management of household waste incineration fly ash [5,6]. More advanced technologies must be adopted in the waste incinerators
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