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- W2078940268 abstract "The service life of COREX melter gasifier mainly depends on the hearth refractory erosion which is strongly affected by the liquid iron flow and the heat transfer. In the present work, a three‐dimensional mathematical model at steady state which takes fluid buoyancy force and turbulence model into consideration is introduced to describe the flow and temperature distribution in the hearth in detail. The accuracy of the model is evaluated using plant operational data. The results show that the position of serious mechanical erosion gradually shifts from the hearth pool bottom to the sidewall, as the coke bed position changes from “floating” on the liquid iron to “sitting” on the hearth pool bottom during one tapping cycle under the condition of stable tapping. The second peak of liquid iron flow, which is a noticeable feature of COREX melter gasifier in comparison with blast furnace, could result in more serious mechanical erosion of sidewall and severer thermal erosion of refractory on hearth pool bottom. The effective countermeasures of the second peak of liquid iron flow are proposed in this work. In addition, the effects of porosity of fine coke region and refractory erosion are further discussed. The results can be used to predict the inner profile of hearth and to provide guidance for protecting the hearth refractory." @default.
- W2078940268 created "2016-06-24" @default.
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- W2078940268 date "2013-07-16" @default.
- W2078940268 modified "2023-10-06" @default.
- W2078940268 title "Numerical Simulation of Liquid Iron Flow and Heat Transfer in the Hearth of COREX Melter Gasifier during Tapping Process" @default.
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- W2078940268 doi "https://doi.org/10.1002/srin.201300104" @default.
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