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- W4296124150 endingPage "125882" @default.
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- W4296124150 abstract "Coal gasification fine ash (CGFA) has the characteristics of high carbon content, fine-grained, and sizeable annual output, causing environmental pollution and energy waste. Oxygen-enriched combustion is an effective way to solve the CGFA problem. This paper used thermogravimetric to study the effect of thermal conversion, kinetic analysis, and empirical optimization on the combustion process of CGFA in oxygen-enriched atmosphere. The results show that oxygen-enriched combustion of raw coal and CGFA improve ignition, burnout performance, combustion stability, and reduced activation energy. As the O2 concentration increased from 30 % to 70 %, the activation energy of CGFA increased, but the improvement in combustion performance was not significant. A two-factor analysis of variance was carried out using a generalized linear model to obtain the effects of oxygen concentration, heating rate, and temperature variations on the combustion properties of CGFA, showing that atmosphere, heating rate and temperature variations all had significant effects on the combustion performance of CGFA, but atmosphere and heating rate had a more substantial impact on the combustion performance of CGFA. The combustion performance of raw coal under 30 %O2/70 %Ar atmosphere was better than that of CGFA, and the oxygen-enriched combustion (30 %O2/70 %Ar) performance of CGFA was comparable to that of CGFA blended with 60 % bituminous coal in air atmosphere. A kinetic model was developed to describe the oxygen-enriched combustion process (R2 > 0.92). The oxygen-enriched conditions of CGFA allow for efficient and clean combustion." @default.
- W4296124150 created "2022-09-17" @default.
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- W4296124150 date "2023-01-01" @default.
- W4296124150 modified "2023-09-26" @default.
- W4296124150 title "Thermal conversion, kinetics, thermodynamics and empirical optimization of combustion performance of coal gasification fine ash in oxygen-enriched atmosphere" @default.
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- W4296124150 doi "https://doi.org/10.1016/j.fuel.2022.125882" @default.
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