Abstract
Municipal solid waste (MSW) gasification could be a novel method that shows the various advantages over traditional MSW treatments in China. Other research concluded that MSW gasification was operating by the assistant heat, and the gasification may occur under medium temperature. So, this study is aimed to investigate MSW gasification and pyrolysis behavior and analyze the syngas evolution and reaction mechanism. The MSW samples were collected in daily life and the experiments were carried out in a fixed tubular reactor below 650 °C. The effects of medium temperature and oxygen content on syngas quality were elucidated in depth. The results have shown that temperature can promote the syngas quality in the range of 550–650 °C, because the increasing temperature strengthens the reaction rate. The oxygen content should be controlled in a certain range, or oxidation reactions will be more prominent during gasification. The optimal gasification condition in this study was obtained at 650 °C and an oxygen concentration of 1.25%, the combustible gas yield and the lower heating value (LHV) of syngas of this condition were 0.296 L/g and 10.98 kJ/L, respectively. This study provides insights for MSW gasification under medium temperature, and a practical gasification system can be designed under a certain condition.
Highlights
Rapid population growth and economic development have led to serious environmental problems in recent years, such as enormous solid waste generation and pollutant discharge, negatively impacting the quality of life
1, and it how temperature and oxygen content affected the are gasification are discussed here, and the effects is clear that temperature and oxygen content the crucial factors during of temperature oxygen content on product andthe syngas composition are analyzed in detail
Syngas from municipal solid waste (MSW) gasification were investigated in a fixed-bed reactor
Summary
Rapid population growth and economic development have led to serious environmental problems in recent years, such as enormous solid waste generation and pollutant discharge, negatively impacting the quality of life. The amount of national municipal solid waste (MSW) transportation in 2017 reached an astonishing 210 million tons in China, maintaining an annual growth rate of 6% in the past five years [1]. Traditional MSW disposal treatments, such as landfill, incineration, composting, recycling, and others, have various drawbacks. The disposal period of landfill is long and it takes up too much available space, which is not suitable as a long-term solution [2,3], composting and recycling are inefficient and the handling capacity is limited, and other methods need to be developed [4]. Incineration can efficiently recover energy of solid waste and reduce the weight and volume of MSW, the pollutants, e.g., NOx , HCl, dioxins, and heavy metals, still restrict its development [3,5]
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