Sulfur retention by ash during coal combustion. Part I. A model of char particle combustion
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A model for the combustion of porous char particles as a basis for modeling the process of sulfur retention by ash dining coal combustion is developed in this paper. The model belongs to the microscopic intrinsic models and describes the dynamic behavior of a porous char particle during comustion, taking into account temporal and spatial changes of all important physical properties of the char particle and various combustion parameters. The The paramettic analysis of the enhanced model shows that the model represents a good basis for the development of a model for the process of sulfur retention by ash during coal combustion. The model enables die prediction of die values of all parameters necessary for the introduction of reactions between sulfur compounds and mineral components in ash. primarily calcium oxide.