Pohang University of Science and Technology · Engineering
Professor Young-Seek Yoon's research lab specializes in advanced energy conversion technologies, with a primary focus on coal gasification and slagging processes in entrained-flow gasifiers. The lab develops innovative mathematical models and simulation tools to understand and optimize the complex thermal and chemical behaviors during gasification, particularly emphasizing ash melting, heat transfer, and slag formation. By integrating thermodynamic principles with computational modeling using platforms like gPROMS, the lab aims to enhance process efficiency and reduce environmental impact in clean coal technologies. Their work is grounded in experimental validation using pilot-scale data, ensuring practical relevance for industrial applications.
Figures are computed from collected data and may differ slightly.
A one-dimensional model is developed to represent the ash-melting phenomenon, which was not considered in the previous one-dimensional (1-D) entrained-flow gasifier model. We include sensible heat of slag and the fusion heat of ash in the heat balance equation. To consider the melting of ash, we propose an algorithm that calculates the energy balance for three scenarios based on temperature. We also use the composition and the thermal properties of anorthite mineral to express ash. gPROMS for di
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