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Flow of combustion air in the burner of a rotary kiln
Dorniak, Michal ; Martykán, Jiří (oponent) ; Vondál, Jiří (vedoucí práce)
The presented master's thesis focuses on the computational fluid dynamics (CFD) simulation of combustion air within a cement rotary kiln burner and the area immediately behind the burner. The research was conducted in collaboration with the cement plant Českomoravský cement, a.s., facility location Mokrá. The initial sections of the thesis provide an overview of the current state of cement production. The subsequent part discusses the principles and calculations involved in CFD simulations, along with other important parameters necessary for a comprehensive and accurate presentation of the obtained results. The second part of the thesis focuses on the development and meshing of the burner model. Data for creating the model were collected during multiple visits to the cement plant, where real measurements of the burner were conducted. The simulations in this study aimed to comprehensively analyse the detailed behaviour of combustion air. Through these simulations, several areas requiring optimization were identified and subsequently improved. An additional simulation was conducted to evaluate the optimized state. Another significant aspect considered in this thesis is the erosion assessment of the pulverized coal channel. Multiple simulations were performed to determine the areas most affected by erosion. In the final section of the thesis, various approaches to address this issue are suggested.
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